[INFO] fetching crate try-mutex 0.3.0...
[INFO] testing try-mutex-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate try-mutex 0.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate try-mutex 0.3.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate try-mutex 0.3.0
[INFO] finished tweaking crates.io crate try-mutex 0.3.0
[INFO] tweaked toml for crates.io crate try-mutex 0.3.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 491a315235aba05ae3958bac9b0bb3a553d8cc9aaa3ef5d3555e48b2cd75856e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "491a315235aba05ae3958bac9b0bb3a553d8cc9aaa3ef5d3555e48b2cd75856e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "491a315235aba05ae3958bac9b0bb3a553d8cc9aaa3ef5d3555e48b2cd75856e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "491a315235aba05ae3958bac9b0bb3a553d8cc9aaa3ef5d3555e48b2cd75856e", kill_on_drop: false }`
[INFO] [stdout] 491a315235aba05ae3958bac9b0bb3a553d8cc9aaa3ef5d3555e48b2cd75856e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f69e1acd144c1127bc1277bb3d0221037aca18fee5a43253f66961e7860e0b5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0f69e1acd144c1127bc1277bb3d0221037aca18fee5a43253f66961e7860e0b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling try-mutex v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "0f69e1acd144c1127bc1277bb3d0221037aca18fee5a43253f66961e7860e0b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f69e1acd144c1127bc1277bb3d0221037aca18fee5a43253f66961e7860e0b5", kill_on_drop: false }`
[INFO] [stdout] 0f69e1acd144c1127bc1277bb3d0221037aca18fee5a43253f66961e7860e0b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f52a4b29bfbc8ca4d45f8664bdea66e21589005319fe1bedd6de41b324ac71b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6f52a4b29bfbc8ca4d45f8664bdea66e21589005319fe1bedd6de41b324ac71b", kill_on_drop: false }`
[INFO] [stderr]    Compiling try-mutex v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "6f52a4b29bfbc8ca4d45f8664bdea66e21589005319fe1bedd6de41b324ac71b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f52a4b29bfbc8ca4d45f8664bdea66e21589005319fe1bedd6de41b324ac71b", kill_on_drop: false }`
[INFO] [stdout] 6f52a4b29bfbc8ca4d45f8664bdea66e21589005319fe1bedd6de41b324ac71b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8d2fd1d021ebc2e0568aad21fa9dfb1e26100bfc0d5943acc3abd5f4c2cb90a2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8d2fd1d021ebc2e0568aad21fa9dfb1e26100bfc0d5943acc3abd5f4c2cb90a2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/try_mutex-fb3b260f5cc71496
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tests-fc2f2db3dcca34ea
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test get_mut ... ok
[INFO] [stdout] test only_one_lock ... ok
[INFO] [stdout] test single_thread ... ok
[INFO] [stdout] test across_threads ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests try-mutex
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8d2fd1d021ebc2e0568aad21fa9dfb1e26100bfc0d5943acc3abd5f4c2cb90a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d2fd1d021ebc2e0568aad21fa9dfb1e26100bfc0d5943acc3abd5f4c2cb90a2", kill_on_drop: false }`
[INFO] [stdout] 8d2fd1d021ebc2e0568aad21fa9dfb1e26100bfc0d5943acc3abd5f4c2cb90a2