[INFO] cloning repository https://github.com/Centril/rust_strong_rc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Centril/rust_strong_rc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCentril%2Frust_strong_rc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCentril%2Frust_strong_rc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67190f782090bd5aa95bbedb40d1ac292e08cd10
[INFO] testing Centril/rust_strong_rc against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCentril%2Frust_strong_rc" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Centril/rust_strong_rc on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Centril/rust_strong_rc
[INFO] finished tweaking git repo https://github.com/Centril/rust_strong_rc
[INFO] tweaked toml for git repo https://github.com/Centril/rust_strong_rc written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Centril/rust_strong_rc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5785bb359ea002d3b82ffaaf8ba079368c389d0c7221420e3b4f6cd7c1377510
[INFO] running `Command { std: "docker" "start" "-a" "5785bb359ea002d3b82ffaaf8ba079368c389d0c7221420e3b4f6cd7c1377510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5785bb359ea002d3b82ffaaf8ba079368c389d0c7221420e3b4f6cd7c1377510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5785bb359ea002d3b82ffaaf8ba079368c389d0c7221420e3b4f6cd7c1377510", kill_on_drop: false }`
[INFO] [stdout] 5785bb359ea002d3b82ffaaf8ba079368c389d0c7221420e3b4f6cd7c1377510
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2622f88b51ec52bcc93a6b3e01331c833544cac2bd14a681e60e003dda89a280
[INFO] running `Command { std: "docker" "start" "-a" "2622f88b51ec52bcc93a6b3e01331c833544cac2bd14a681e60e003dda89a280", kill_on_drop: false }`
[INFO] [stderr]    Compiling strong_rc v0.1.4 (/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:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 | #![feature(specialization)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/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 0.37s
[INFO] running `Command { std: "docker" "inspect" "2622f88b51ec52bcc93a6b3e01331c833544cac2bd14a681e60e003dda89a280", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2622f88b51ec52bcc93a6b3e01331c833544cac2bd14a681e60e003dda89a280", kill_on_drop: false }`
[INFO] [stdout] 2622f88b51ec52bcc93a6b3e01331c833544cac2bd14a681e60e003dda89a280
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be01d13d9d4d7d45284509ae8e210149afcf98bbd5fa5b2a132fdce27c59e16d
[INFO] running `Command { std: "docker" "start" "-a" "be01d13d9d4d7d45284509ae8e210149afcf98bbd5fa5b2a132fdce27c59e16d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.18
[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:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 | #![feature(specialization)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/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]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling strong_rc v0.1.4 (/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:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 | #![feature(specialization)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/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 2.96s
[INFO] running `Command { std: "docker" "inspect" "be01d13d9d4d7d45284509ae8e210149afcf98bbd5fa5b2a132fdce27c59e16d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be01d13d9d4d7d45284509ae8e210149afcf98bbd5fa5b2a132fdce27c59e16d", kill_on_drop: false }`
[INFO] [stdout] be01d13d9d4d7d45284509ae8e210149afcf98bbd5fa5b2a132fdce27c59e16d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 40948e4b1ba67f1a93a9a48f4412bd8e1505e60c65af73534d8d29ebd62a8574
[INFO] running `Command { std: "docker" "start" "-a" "40948e4b1ba67f1a93a9a48f4412bd8e1505e60c65af73534d8d29ebd62a8574", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/lib.rs:121:12
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 121 | #![feature(specialization)]
[INFO] [stdout] 
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] running 19 tests
[INFO] [stderr]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] test cowrc_clone_unique2 ... ok
[INFO] [stderr]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout] test get_mut ... ok
[INFO] [stderr]     = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout] test into_from_raw ... ok
[INFO] [stderr] 
[INFO] [stdout] test is_unique ... ok
[INFO] [stderr] warning: `strong_rc` (lib) generated 1 warning
[INFO] [stdout] test ptr_eq ... ok
[INFO] [stderr] warning: `strong_rc` (lib test) generated 1 warning (1 duplicate)
[INFO] [stdout] test rc_unsized ... ok
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] test show ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/strong_rc-e409d5c43b177e89)
[INFO] [stdout] test simple ... ok
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-443e54c2c1a3f07f)
[INFO] [stdout] test str ... ok
[INFO] [stdout] test strong_count ... ok
[INFO] [stdout] test try_unwrap_box ... ok
[INFO] [stdout] test from_owned ... ok
[INFO] [stdout] test cowrc_clone_make_unique ... ok
[INFO] [stdout] test clone ... ok
[INFO] [stdout] test simple_clone ... ok
[INFO] [stdout] test try_unwrap ... ok
[INFO] [stdout] test destructor ... ok
[INFO] [stdout] test into_from_raw2 ... ok
[INFO] [stderr]    Doc-tests strong_rc
[INFO] [stdout] test rc_slice ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[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:121:12
[INFO] [stderr]     |
[INFO] [stderr] 121 | #![feature(specialization)]
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stderr]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/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 32 tests
[INFO] [stdout] test src/lib.rs - ThreadsafeTest (line 1039) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - ThreadsafeTest (line 1046) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::gt (line 960) ... ok
[INFO] [stdout] test src/lib.rs - (line 41) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::get_mut (line 378) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::partial_cmp (line 905) ... ok
[INFO] [stdout] test src/lib.rs - Rc<[T]>::from (line 761) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::le (line 942) ... ok
[INFO] [stdout] test src/lib.rs - Rc<str>::from (line 786) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::lt (line 924) ... ok
[INFO] [stdout] test src/lib.rs - Rc<[T]>::from (line 703) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::default (line 557) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::strong_count (line 341) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::ge (line 978) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::try_unwrap (line 199) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::drop (line 502) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::ptr_eq (line 403) ... ok
[INFO] [stdout] test src/lib.rs - Rc<[T]>::from (line 668) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::from (line 583) ... ok
[INFO] [stdout] test src/lib.rs - Rc<[T]>::from (line 750) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::new (line 170) ... ok
[INFO] [stdout] test src/lib.rs - Rc<str>::from (line 797) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::cmp (line 998) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::make_mut (line 433) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::clone (line 538) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::eq (line 865) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::into_raw (line 239) ... ok
[INFO] [stdout] test src/lib.rs - (line 68) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::ne (line 883) ... ok
[INFO] [stdout] test src/lib.rs - Rc<T>::from_raw (line 264) ... ok
[INFO] [stdout] test src/lib.rs - Rc<[T]>::from (line 717) ... ok
[INFO] [stdout] test src/lib.rs - Rc<str>::from (line 808) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 32 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.86s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "40948e4b1ba67f1a93a9a48f4412bd8e1505e60c65af73534d8d29ebd62a8574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40948e4b1ba67f1a93a9a48f4412bd8e1505e60c65af73534d8d29ebd62a8574", kill_on_drop: false }`
[INFO] [stdout] 40948e4b1ba67f1a93a9a48f4412bd8e1505e60c65af73534d8d29ebd62a8574