[INFO] fetching crate free-algebra 0.1.0... [INFO] testing free-algebra-0.1.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031 [INFO] extracting crate free-algebra 0.1.0 into /workspace/builds/worker-56/source [INFO] validating manifest of crates.io crate free-algebra 0.1.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate free-algebra 0.1.0 [INFO] finished tweaking crates.io crate free-algebra 0.1.0 [INFO] tweaked toml for crates.io crate free-algebra 0.1.0 written to /workspace/builds/worker-56/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded maths-traits v0.2.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] bfc094b8694f6433ac256007dd97b7c2bfd0d4b4e5617e2a9fc6d0ac9078b600 [INFO] running `Command { std: "docker" "start" "-a" "bfc094b8694f6433ac256007dd97b7c2bfd0d4b4e5617e2a9fc6d0ac9078b600", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bfc094b8694f6433ac256007dd97b7c2bfd0d4b4e5617e2a9fc6d0ac9078b600", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bfc094b8694f6433ac256007dd97b7c2bfd0d4b4e5617e2a9fc6d0ac9078b600", kill_on_drop: false }` [INFO] [stdout] bfc094b8694f6433ac256007dd97b7c2bfd0d4b4e5617e2a9fc6d0ac9078b600 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ce7933a6982d22efd5f440fd083abab9f9e578860303cfb4a573f5aa858931fe [INFO] running `Command { std: "docker" "start" "-a" "ce7933a6982d22efd5f440fd083abab9f9e578860303cfb4a573f5aa858931fe", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling maths-traits v0.2.1 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Compiling derivative v1.0.4 [INFO] [stderr] Compiling free-algebra v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:77:12 [INFO] [stdout] | [INFO] [stdout] 77 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 10.72s [INFO] running `Command { std: "docker" "inspect" "ce7933a6982d22efd5f440fd083abab9f9e578860303cfb4a573f5aa858931fe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ce7933a6982d22efd5f440fd083abab9f9e578860303cfb4a573f5aa858931fe", kill_on_drop: false }` [INFO] [stdout] ce7933a6982d22efd5f440fd083abab9f9e578860303cfb4a573f5aa858931fe [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 488362cb0fa273cbb4413a1a89339094d62d61061685038abd49bc73a9c5dd78 [INFO] running `Command { std: "docker" "start" "-a" "488362cb0fa273cbb4413a1a89339094d62d61061685038abd49bc73a9c5dd78", kill_on_drop: false }` [INFO] [stderr] Compiling free-algebra v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:77:12 [INFO] [stdout] | [INFO] [stdout] 77 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:77:12 [INFO] [stdout] | [INFO] [stdout] 77 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.99s [INFO] running `Command { std: "docker" "inspect" "488362cb0fa273cbb4413a1a89339094d62d61061685038abd49bc73a9c5dd78", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "488362cb0fa273cbb4413a1a89339094d62d61061685038abd49bc73a9c5dd78", kill_on_drop: false }` [INFO] [stdout] 488362cb0fa273cbb4413a1a89339094d62d61061685038abd49bc73a9c5dd78 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] d32343e966ccd1e8b36a07d48cec11d4ff5b9a34c3d1881a9a0896801a230b2d [INFO] running `Command { std: "docker" "start" "-a" "d32343e966ccd1e8b36a07d48cec11d4ff5b9a34c3d1881a9a0896801a230b2d", kill_on_drop: false }` [INFO] [stderr] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stderr] --> src/lib.rs:77:12 [INFO] [stderr] | [INFO] [stderr] 77 | #![feature(specialization)] [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(incomplete_features)]` on by default [INFO] [stderr] = note: see issue #31844 for more information [INFO] [stderr] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stderr] [INFO] [stderr] warning: `free-algebra` (lib) generated 1 warning [INFO] [stderr] warning: `free-algebra` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.10s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/free_algebra-3ba6e0aa22733043) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests free-algebra [INFO] [stderr] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stderr] --> /opt/rustwide/workdir/src/lib.rs:77:12 [INFO] [stderr] | [INFO] [stderr] 77 | #![feature(specialization)] [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(incomplete_features)]` on by default [INFO] [stderr] = note: see issue #31844 for more information [INFO] [stderr] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stdout] [INFO] [stdout] running 26 tests [INFO] [stdout] test src/monoid.rs - monoid::MonoidalString (line 96) ... ok [INFO] [stdout] test src/specifics/free_group.rs - specifics::free_group::FreeInv::is_id (line 114) ... ok [INFO] [stdout] test src/monoid.rs - monoid::MonoidalString (line 115) ... ok [INFO] [stdout] test src/lib.rs - (line 21) ... ok [INFO] [stdout] test src/monoid.rs - monoid::MonoidalString::iter (line 254) ... ok [INFO] [stdout] test src/specifics/free_group.rs - specifics::free_group::FreeGroup (line 10) ... ok [INFO] [stdout] test src/monoid.rs - monoid::MonoidalString::commutator (line 337) ... ok [INFO] [stdout] test src/specifics/free_group.rs - specifics::free_group::FreeInv::is_inv (line 100) ... ok [INFO] [stdout] test src/specifics/free_monoid.rs - specifics::free_monoid::FreeMonoid (line 11) ... ok [INFO] [stdout] test src/monoid.rs - monoid::MonoidalString (line 105) ... ok [INFO] [stdout] test src/module.rs - module::ModuleString::get (line 279) ... ok [INFO] [stdout] test src/monoid.rs - monoid::MonoidalString (line 124) ... ok [INFO] [stdout] test src/module.rs - module::ModuleString::get_ref (line 258) ... ok [INFO] [stdout] test src/monoid.rs - monoid::MonoidalString::reverse (line 302) ... ok [INFO] [stdout] test src/module.rs - module::ModuleString::iter_mut (line 303) ... ok [INFO] [stdout] test src/specifics/free_pow.rs - specifics::free_pow::FreePowMonoid (line 11) ... ok [INFO] [stdout] test src/monoid.rs - monoid::MonoidalString::iter_mut (line 277) ... ok [INFO] [stdout] test src/monoid.rs - monoid::MonoidalString::commutator (line 321) ... ok [INFO] [stdout] test src/monoid.rs - monoid::MonoidalString::len (line 236) ... ok [INFO] [stdout] test src/specifics/mod.rs - specifics::FreeModule (line 92) ... ok [INFO] [stdout] test src/module.rs - module::ModuleString::len (line 236) ... ok [INFO] [stdout] test src/specifics/mod.rs - specifics::MonoidRing (line 40) ... ok [INFO] [stdout] test src/module.rs - module::ModuleString (line 75) ... ok [INFO] [stdout] test src/specifics/mod.rs - specifics::FreeAlgebra (line 120) ... ok [INFO] [stdout] test src/module.rs - module::ModuleString::commutator (line 329) ... ok [INFO] [stdout] test src/module.rs - module::ModuleString::commutator (line 352) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.05s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d32343e966ccd1e8b36a07d48cec11d4ff5b9a34c3d1881a9a0896801a230b2d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d32343e966ccd1e8b36a07d48cec11d4ff5b9a34c3d1881a9a0896801a230b2d", kill_on_drop: false }` [INFO] [stdout] d32343e966ccd1e8b36a07d48cec11d4ff5b9a34c3d1881a9a0896801a230b2d