2024-05-10 16:15.14: New job: test c-cube/iter https://github.com/c-cube/iter.git#refs/heads/main (fc69ce4c919cdd04fb5041410fd61d5a3f742702) (linux-x86_64:debian-12-4.08_opam-2.1)Base: ocaml/opam@sha256:fda21a992c5df0e509393861bcf1b40849d544491656742979043a148fbba8bbOpam project buildTo reproduce locally:git clone --recursive "https://github.com/c-cube/iter.git" -b "main" && cd "iter" && git reset --hard fc69ce4ccat > Dockerfile <<'END-OF-DOCKERFILE'FROM ocaml/opam@sha256:fda21a992c5df0e509393861bcf1b40849d544491656742979043a148fbba8bb# debian-12-4.08_opam-2.1USER 1000:1000ENV CLICOLOR_FORCE="1"ENV OPAMCOLOR="always"WORKDIR /srcRUN sudo ln -f /usr/bin/opam-2.1 /usr/bin/opamRUN opam init --reinit -niRUN uname -rs && opam exec -- ocaml -version && opam --versionWORKDIR /srcRUN sudo chown opam /srcRUN cd ~/opam-repository && (git cat-file -e 307e33d08fc4ccc1ea453ab45b0ead8ed574b97b || git fetch origin master) && git reset -q --hard 307e33d08fc4ccc1ea453ab45b0ead8ed574b97b && git log --no-decorate -n1 --oneline && opam update -uCOPY --chown=1000:1000 iter.opam ./RUN opam pin add -yn iter.dev './'ENV DEPS="astring.0.8.5 base-bigarray.base base-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.1.2.0 cppo.1.6.9 csexp.1.5.2 dune.3.15.2 fmt.0.9.0 logs.0.7.0 mdx.2.4.1 ocaml.4.08.1 ocaml-base-compiler.4.08.1 ocaml-config.1 ocaml-version.3.6.7 ocamlbuild.0.14.3 ocamlfind.1.9.6 ounit2.2.2.7 qcheck-core.0.21.3 re.1.11.0 result.1.5 seq.base stdlib-shims.0.3.0 topkg.1.0.7"ENV CI="true"ENV OCAMLCI="true"RUN opam update --depexts && opam install --cli=2.1 --depext-only -y iter.dev $DEPSRUN opam install $DEPSCOPY --chown=1000:1000 . /srcRUN opam exec -- dune build @install @check @runtest && rm -rf _buildEND-OF-DOCKERFILEdocker build .END-REPRO-BLOCK2024-05-10 16:15.14: Using cache hint "c-cube/iter-ocaml/opam@sha256:fda21a992c5df0e509393861bcf1b40849d544491656742979043a148fbba8bb-debian-12-4.08_opam-2.1-effd65870e931be4da356eca2f741417"2024-05-10 16:15.14: Using OBuilder spec:((from ocaml/opam@sha256:fda21a992c5df0e509393861bcf1b40849d544491656742979043a148fbba8bb)(comment debian-12-4.08_opam-2.1)(user (uid 1000) (gid 1000))(env CLICOLOR_FORCE 1)(env OPAMCOLOR always)(workdir /src)(run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam"))(run (shell "opam init --reinit -ni"))(run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))(workdir /src)(run (shell "sudo chown opam /src"))(run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "cd ~/opam-repository && (git cat-file -e 307e33d08fc4ccc1ea453ab45b0ead8ed574b97b || git fetch origin master) && git reset -q --hard 307e33d08fc4ccc1ea453ab45b0ead8ed574b97b && git log --no-decorate -n1 --oneline && opam update -u"))(copy (src iter.opam) (dst ./))(run (network host)(shell "opam pin add -yn iter.dev './'"))(env DEPS "astring.0.8.5 base-bigarray.base base-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.1.2.0 cppo.1.6.9 csexp.1.5.2 dune.3.15.2 fmt.0.9.0 logs.0.7.0 mdx.2.4.1 ocaml.4.08.1 ocaml-base-compiler.4.08.1 ocaml-config.1 ocaml-version.3.6.7 ocamlbuild.0.14.3 ocamlfind.1.9.6 ounit2.2.2.7 qcheck-core.0.21.3 re.1.11.0 result.1.5 seq.base stdlib-shims.0.3.0 topkg.1.0.7")(env CI true)(env OCAMLCI true)(run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "opam update --depexts && opam install --cli=2.1 --depext-only -y iter.dev $DEPS"))(run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "opam install $DEPS"))(copy (src .) (dst /src))(run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build")))2024-05-10 16:15.14: Waiting for resource in pool OCluster2024-05-11 10:01.52: Waiting for worker…2024-05-11 10:06.56: Got resource from pool OClusterBuilding on x86-bm-c7.sw.ocaml.orghint: Using 'master' as the name for the initial branch. This default branch namehint: is subject to change. To configure the initial branch name to use in allhint: of your new repositories, which will suppress this warning, call:hint:hint: git config --global init.defaultBranch <name>hint:hint: Names commonly chosen instead of 'master' are 'main', 'trunk' andhint: 'development'. The just-created branch can be renamed via this command:hint:hint: git branch -m <name>Initialized empty Git repository in /var/cache/obuilder/ocluster/git/iter.git-8f912dfd1e1fdbb9c6ccc62d6c2b80a3f39c22e2/.git/HEAD is now at fc69ce4 faster doc build(from ocaml/opam@sha256:fda21a992c5df0e509393861bcf1b40849d544491656742979043a148fbba8bb)2024-05-11 10:06.57 ---> using "e0805034d9e735da2cb99f3eb2cde6a7473dabe8bd1020b5bf9a6e9f3a9991fe" from cache/: (comment debian-12-4.08_opam-2.1)/: (user (uid 1000) (gid 1000))/: (env CLICOLOR_FORCE 1)/: (env OPAMCOLOR always)/: (workdir /src)/src: (run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam"))2024-05-11 10:06.57 ---> using "646bc87e0f57317c5ebf610ed55d499e1a9858c6afbb70f9b3c1442beb0c0bc7" from cache/src: (run (shell "opam init --reinit -ni"))Configuring from /home/opam/.opamrc and then from built-in defaults.Checking for available remotes: rsync and local, git.- you won't be able to use mercurial repositories unless you install the hg command on your system.- you won't be able to use darcs repositories unless you install the darcs command on your system.This version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.1, which can't be reverted.You may want to back it up before going further.Continue? [Y/n] yFormat upgrade done.<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>[default] synchronised from file:///home/opam/opam-repository2024-05-11 10:06.57 ---> using "3efe606a65f6fe7269ee6813ddd2fa2c2714f24a04a227ae5fb5c7db864c4c57" from cache/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))Linux 5.15.0-106-genericThe OCaml toplevel, version 4.08.12.1.52024-05-11 10:06.57 ---> using "6225fba4323f2de754e24da77b187b22e091a3b5bdd8f66c82092a9cc9863ec9" from cache/src: (workdir /src)/src: (run (shell "sudo chown opam /src"))2024-05-11 10:06.57 ---> using "35c4353ebc362a36ebb5c4ac3584cadf9893526dc08b896ef76d9b395ed9c850" from cache/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "cd ~/opam-repository && (git cat-file -e 307e33d08fc4ccc1ea453ab45b0ead8ed574b97b || git fetch origin master) && git reset -q --hard 307e33d08fc4ccc1ea453ab45b0ead8ed574b97b && git log --no-decorate -n1 --oneline && opam update -u"))From https://github.com/ocaml/opam-repository* branch master -> FETCH_HEADeb2dcab0d8..2ae169d7d0 master -> origin/master307e33d08f @dra27 and @Octachron maintain the 4.08+ packages<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>[default] synchronised from file:///home/opam/opam-repositoryEverything as up-to-date as possible (run with --verbose to show unavailable upgrades).However, you may "opam upgrade" these packages explicitly, which will ask permission to downgrade or uninstall the conflicting packages.Nothing to do.# Run eval $(opam env) to update the current shell environment2024-05-11 10:06.57 ---> using "167082e53e3e0b5c6101e17be718ec3e4c289917b8e1d14e9b0bc7b95515b5c7" from cache/src: (copy (src iter.opam) (dst ./))2024-05-11 10:06.58 ---> saved as "19090849c8def772bf90b933c5d1879b4c283e9d9fff5565592eab1b669d958c"/src: (run (network host)(shell "opam pin add -yn iter.dev './'"))[iter.dev] synchronised (file:///src)iter is now pinned to file:///src (version dev)2024-05-11 10:07.00 ---> saved as "60e41f7779b053ddf425cd2386b7589a08103eeb6df7683a87c3fe94d3147590"/src: (env DEPS "astring.0.8.5 base-bigarray.base base-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.1.2.0 cppo.1.6.9 csexp.1.5.2 dune.3.15.2 fmt.0.9.0 logs.0.7.0 mdx.2.4.1 ocaml.4.08.1 ocaml-base-compiler.4.08.1 ocaml-config.1 ocaml-version.3.6.7 ocamlbuild.0.14.3 ocamlfind.1.9.6 ounit2.2.2.7 qcheck-core.0.21.3 re.1.11.0 result.1.5 seq.base stdlib-shims.0.3.0 topkg.1.0.7")/src: (env CI true)/src: (env OCAMLCI true)/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "opam update --depexts && opam install --cli=2.1 --depext-only -y iter.dev $DEPS"))+ /usr/bin/sudo "apt-get" "update"- Hit:1 http://deb.debian.org/debian bookworm InRelease- Get:2 http://deb.debian.org/debian bookworm-updates InRelease [55.4 kB]- Get:3 http://deb.debian.org/debian-security bookworm-security InRelease [48.0 kB]- Get:4 http://deb.debian.org/debian-security bookworm-security/main amd64 Packages [155 kB]- Fetched 258 kB in 0s (968 kB/s)- Reading package lists...-<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>[iter.dev] synchronised (no changes)[NOTE] Package ocaml-config is already installed (current version is 1).[NOTE] Package ocaml-base-compiler is already installed (current version is 4.08.1).[NOTE] Package ocaml is already installed (current version is 4.08.1).[NOTE] Package base-unix is already installed (current version is base).[NOTE] Package base-threads is already installed (current version is base).[NOTE] Package base-bigarray is already installed (current version is base).2024-05-11 10:07.15 ---> saved as "4e7afb56686762e09766b6012fbd5f1c105c381eebe9bf9630bdd8829e57278d"/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "opam install $DEPS"))[NOTE] Package ocaml-config is already installed (current version is 1).[NOTE] Package ocaml-base-compiler is already installed (current version is 4.08.1).[NOTE] Package ocaml is already installed (current version is 4.08.1).[NOTE] Package base-unix is already installed (current version is base).[NOTE] Package base-threads is already installed (current version is base).[NOTE] Package base-bigarray is already installed (current version is base).The following actions will be performed:- install ocamlbuild 0.14.3- install cmdliner 1.2.0- install ocamlfind 1.9.6- install seq base- install dune 3.15.2- install topkg 1.0.7- install stdlib-shims 0.3.0- install result 1.5- install re 1.11.0- install qcheck-core 0.21.3- install ocaml-version 3.6.7- install csexp 1.5.2- install cppo 1.6.9- install camlp-streams 5.0.1- install fmt 0.9.0- install astring 0.8.5- install ounit2 2.2.7- install logs 0.7.0- install mdx 2.4.1===== 19 to install =====<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>-> retrieved astring.0.8.5 (cached)-> retrieved camlp-streams.5.0.1 (cached)-> retrieved cmdliner.1.2.0 (cached)-> retrieved cppo.1.6.9 (cached)-> retrieved csexp.1.5.2 (cached)-> retrieved dune.3.15.2 (cached)-> retrieved fmt.0.9.0 (cached)-> retrieved logs.0.7.0 (cached)-> retrieved mdx.2.4.1 (cached)-> retrieved ocaml-version.3.6.7 (cached)-> retrieved ocamlbuild.0.14.3 (cached)-> retrieved ocamlfind.1.9.6 (cached)-> retrieved ounit2.2.2.7 (cached)-> retrieved qcheck-core.0.21.3 (cached)-> installed seq.base-> retrieved re.1.11.0 (cached)-> retrieved result.1.5 (cached)-> retrieved stdlib-shims.0.3.0 (cached)-> retrieved topkg.1.0.7 (cached)-> installed cmdliner.1.2.0-> installed ocamlfind.1.9.6-> installed ocamlbuild.0.14.3-> installed topkg.1.0.7-> installed fmt.0.9.0-> installed astring.0.8.5-> installed logs.0.7.0-> installed dune.3.15.2-> installed csexp.1.5.2-> installed result.1.5-> installed ocaml-version.3.6.7-> installed stdlib-shims.0.3.0-> installed camlp-streams.5.0.1-> installed re.1.11.0-> installed cppo.1.6.9-> installed ounit2.2.2.7-> installed qcheck-core.0.21.3-> installed mdx.2.4.1Done.# Run eval $(opam env) to update the current shell environment2024-05-11 10:08.22 ---> saved as "e13fcf4c4b72fa3cbdbe8c2a07d4f74da8f36cd0f36f617f81aff36fe8f9a6ba"/src: (copy (src .) (dst /src))2024-05-11 10:08.23 ---> saved as "b5bc22ea6d11138e8e9b559378395e54a1a4a01d57b594d691e6a2df035a01f0"/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))File "benchs/dune", line 3, characters 17-26:3 | (libraries iter benchmark)^^^^^^^^^Error: Library "benchmark" not found.-> required by_build/default/benchs/.bench_persistent_read.eobjs/byte/dune__exe__Bench_persistent.cmi-> required by alias benchs/checkFile "README.md", line 1, characters 0-0:/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/README.md _build/default/README.md.correcteddiff --git a/_build/default/README.md b/_build/default/README.md.correctedindex 4c8f158..c7e9b67 100644--- a/_build/default/README.md+++ b/_build/default/README.md.corrected@@ -5,9 +5,11 @@ Clean and efficient loop fusion for all your iterating needs!```ocaml# #require "iter";;+No such package: iter# let p x = x mod 5 = 0 inIter.(1 -- 5_000 |> filter p |> map (fun x -> x * x) |> fold (+) 0);;-- : int = 8345837500+Line 2, characters 3-7:+Error: Unbound module Iter````Iter` is a simple abstraction over `iter` functions@@ -52,16 +54,20 @@ With iter, if the source structure provides a# let q : int Queue.t = Queue.create();;val q : int Queue.t = <abstr># Iter.( 1 -- 10 |> to_queue q);;-- : unit = ()+Line 1, characters 1-5:+Error: Unbound module Iter# Iter.of_queue q |> Iter.to_list ;;-- : int list = [1; 2; 3; 4; 5; 6; 7; 8; 9; 10]+Line 1, characters 1-14:+Error: Unbound module Iter# let s : int Stack.t = Stack.create();;val s : int Stack.t = <abstr># Iter.(of_queue q |> to_stack s);;-- : unit = ()+Line 1, characters 1-5:+Error: Unbound module Iter# Iter.of_stack s |> Iter.to_list ;;-- : int list = [10; 9; 8; 7; 6; 5; 4; 3; 2; 1]+Line 1, characters 1-14:+Error: Unbound module Iter```Note how the list of elements is reversed when we transfer them@@ -84,7 +90,8 @@ val h : (int, string) Hashtbl.t = <abstr># (* now to get the values *)Iter.of_hashtbl h |> Iter.map snd |> Iter.to_list;;-- : string list = ["6"; "2"; "8"; "7"; "3"; "5"; "4"; "9"; "0"; "10"; "1"]+Line 2, characters 3-18:+Error: Unbound module Iter```### Replacing `for` loops@@ -95,7 +102,8 @@ use `Iter.(--) : int -> int -> int Iter.t`.```ocaml# Iter.(1 -- 10_000_000 |> fold (+) 0);;-- : int = 50000005000000+Line 1, characters 1-5:+Error: Unbound module Iter# let p x = x mod 5 = 0 inIter.(1 -- 5_000@@ -103,7 +111,8 @@ use `Iter.(--) : int -> int -> int Iter.t`.|> map (fun x -> x * x)|> fold (+) 0);;-- : int = 8345837500+Line 2, characters 3-7:+Error: Unbound module Iter```**NOTE**: with _flambda_ under sufficiently strong@@ -131,20 +140,24 @@ type term = Var of string | App of term * term | Lambda of term| App (a,b) ->Iter.append (subterms a) (subterms b));;-val subterms : term -> term Iter.t = <fun>+Line 1, characters 33-39:+Error: Unbound module Iter# (* Now we can define many other functions easily! *)let vars t =Iter.filter_map(function Var s -> Some s | _ -> None)(subterms t) ;;-val vars : term -> string Iter.t = <fun>+Line 3, characters 5-20:+Error: Unbound module Iter# let size t = Iter.length (subterms t) ;;-val size : term -> int = <fun>+Line 1, characters 14-25:+Error: Unbound module Iter# let vars_list l = Iter.(of_list l |> flat_map vars);;-val vars_list : term list -> string Iter.t = <fun>+Line 1, characters 19-23:+Error: Unbound module Iter```### Permutations@@ -157,21 +170,26 @@ enumerating the ways we can insert an element in a list.```ocaml# open Iter.Infix;;+Line 1, characters 6-16:+Error: Unbound module Iter# let rec insert x l = match l with| [] -> Iter.return [x]| y :: tl ->Iter.append(insert x tl >|= fun tl' -> y :: tl')(Iter.return (x :: l)) ;;-val insert : 'a -> 'a list -> 'a list Iter.t = <fun>+Line 2, characters 11-22:+Error: Unbound module Iter# let rec permute l = match l with| [] -> Iter.return []| x :: tl -> permute tl >>= insert x ;;-val permute : 'a list -> 'a list Iter.t = <fun>+Line 2, characters 11-22:+Error: Unbound module Iter# permute [1;2;3;4] |> Iter.take 2 |> Iter.to_list ;;-- : int list list = [[4; 3; 2; 1]; [4; 3; 1; 2]]+Line 1, characters 1-8:+Error: Unbound value permute```### Advanced example(cd _build/default && /home/opam/.opam/4.08/bin/ocamlc.opt -w @1..3@5..28@30..39@43@46..47@49..57@61..62-40 -strict-sequence -strict-formats -short-paths -keep-locs -w +a -warn-error -a+8 -strict-sequence -w +a -warn-error -a+8 -nolabels -g -bin-annot -I src/.iter.objs/byte -intf-suffix .ml -no-alias-deps -opaque -o src/.iter.objs/byte/iter.cmo -c -impl src/Iter.ml)File "src/Iter.ml", line 204, characters 6-141:204 | ......match !acc with205 | | Nil -> acc := !cur206 | | _ ->207 | (match !tail with208 | | Nil -> ()209 | | Cons r -> r.tl <- !cur)Warning 4: this pattern-matching is fragile.It will remain exhaustive when constructors are added to type node.(cd _build/default && /home/opam/.opam/4.08/bin/ocamlopt.opt -w @1..3@5..28@30..39@43@46..47@49..57@61..62-40 -strict-sequence -strict-formats -short-paths -keep-locs -w +a -warn-error -a+8 -strict-sequence -w +a -warn-error -a+8 -nolabels -g -O3 -unbox-closures -unbox-closures-factor 20 -I src/.iter.objs/byte -I src/.iter.objs/native -intf-suffix .ml -no-alias-deps -opaque -o src/.iter.objs/native/iter.cmx -c -impl src/Iter.ml)File "src/Iter.ml", line 204, characters 6-141:204 | ......match !acc with205 | | Nil -> acc := !cur206 | | _ ->207 | (match !tail with208 | | Nil -> ()209 | | Cons r -> r.tl <- !cur)Warning 4: this pattern-matching is fragile.It will remain exhaustive when constructors are added to type node.(cd _build/default/tests/unit && ./t_iter.exe)random seed: 20417668================================================================================success (ran 4 tests)"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 12024-05-11 10:08.24: Job failed: Failed: Build failed