[INFO] fetching crate multi_stack_queue 0.3.0...
[INFO] testing multi_stack_queue-0.3.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate multi_stack_queue 0.3.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate multi_stack_queue 0.3.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate multi_stack_queue 0.3.0
[INFO] finished tweaking crates.io crate multi_stack_queue 0.3.0
[INFO] tweaked toml for crates.io crate multi_stack_queue 0.3.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8a33067da08456148561e1966bc5dc0678132e0701d264c8e5849ae5799884e
[INFO] running `Command { std: "docker" "start" "-a" "a8a33067da08456148561e1966bc5dc0678132e0701d264c8e5849ae5799884e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8a33067da08456148561e1966bc5dc0678132e0701d264c8e5849ae5799884e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8a33067da08456148561e1966bc5dc0678132e0701d264c8e5849ae5799884e", kill_on_drop: false }`
[INFO] [stdout] a8a33067da08456148561e1966bc5dc0678132e0701d264c8e5849ae5799884e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90c197046aa7c113bfde269929869b1370751a83d73700c7dc0dbf1f9536f740
[INFO] running `Command { std: "docker" "start" "-a" "90c197046aa7c113bfde269929869b1370751a83d73700c7dc0dbf1f9536f740", kill_on_drop: false }`
[INFO] [stderr]    Compiling multi_stack_queue v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "90c197046aa7c113bfde269929869b1370751a83d73700c7dc0dbf1f9536f740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90c197046aa7c113bfde269929869b1370751a83d73700c7dc0dbf1f9536f740", kill_on_drop: false }`
[INFO] [stdout] 90c197046aa7c113bfde269929869b1370751a83d73700c7dc0dbf1f9536f740
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4600f3b3560eebb2c6c4abd7e40d6ed674da101519104e65aafe9f407ae604d9
[INFO] running `Command { std: "docker" "start" "-a" "4600f3b3560eebb2c6c4abd7e40d6ed674da101519104e65aafe9f407ae604d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling multi_stack_queue v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |         let a: MultiStackQueue<TestStruct, 16, 32> = MultiStackQueue::new();
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "4600f3b3560eebb2c6c4abd7e40d6ed674da101519104e65aafe9f407ae604d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4600f3b3560eebb2c6c4abd7e40d6ed674da101519104e65aafe9f407ae604d9", kill_on_drop: false }`
[INFO] [stdout] 4600f3b3560eebb2c6c4abd7e40d6ed674da101519104e65aafe9f407ae604d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3f175efc14e6133ec02a1e3b6729ccc6caa92fc6a610f82f5855339ce6c66cf7
[INFO] running `Command { std: "docker" "start" "-a" "3f175efc14e6133ec02a1e3b6729ccc6caa92fc6a610f82f5855339ce6c66cf7", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/lib.rs:242:13
[INFO] [stderr]     |
[INFO] [stderr] 242 |         let a: MultiStackQueue<TestStruct, 16, 32> = MultiStackQueue::new();
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `multi_stack_queue` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/multi_stack_queue-524f41da4e037458)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test tests::creation ... ok
[INFO] [stdout] test tests::fill ... ok
[INFO] [stdout] test tests::push_and_pop_once ... ok
[INFO] [stdout] test tests::push_once ... ok
[INFO] [stdout] test tests::fifo ... ok
[INFO] [stdout] test tests::pop_empty - should panic ... ok
[INFO] [stdout] test tests::fill_overflow - should panic ... ok
[INFO] [stdout] test tests::push_and_pop_twice - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests multi_stack_queue
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - MultiStackQueue (line 39) ... ignored
[INFO] [stdout] test src/lib.rs - MultiStackQueue<T, N, M>::new (line 88) ... ok
[INFO] [stdout] test src/lib.rs - MultiStackQueue<T, N, M>::is_empty (line 213) ... ok
[INFO] [stdout] test src/lib.rs - MultiStackQueue<T, N, M>::push (line 117) ... ok
[INFO] [stdout] test src/lib.rs - MultiStackQueue<T, N, M>::is_full (line 195) ... ok
[INFO] [stdout] test src/lib.rs - MultiStackQueue<T, N, M>::pop (line 155) ... ok
[INFO] [stdout] test src/lib.rs - MultiStackQueue (line 57) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3f175efc14e6133ec02a1e3b6729ccc6caa92fc6a610f82f5855339ce6c66cf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f175efc14e6133ec02a1e3b6729ccc6caa92fc6a610f82f5855339ce6c66cf7", kill_on_drop: false }`
[INFO] [stdout] 3f175efc14e6133ec02a1e3b6729ccc6caa92fc6a610f82f5855339ce6c66cf7