[INFO] fetching crate linux_once 0.1.1...
[INFO] testing linux_once-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate linux_once 0.1.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate linux_once 0.1.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linux_once 0.1.1
[INFO] finished tweaking crates.io crate linux_once 0.1.1
[INFO] tweaked toml for crates.io crate linux_once 0.1.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c60ffc5ab941aaa8e401cd8b29a6a600c26bbab4c2bf05977338fbe29c72346
[INFO] running `Command { std: "docker" "start" "-a" "8c60ffc5ab941aaa8e401cd8b29a6a600c26bbab4c2bf05977338fbe29c72346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c60ffc5ab941aaa8e401cd8b29a6a600c26bbab4c2bf05977338fbe29c72346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c60ffc5ab941aaa8e401cd8b29a6a600c26bbab4c2bf05977338fbe29c72346", kill_on_drop: false }`
[INFO] [stdout] 8c60ffc5ab941aaa8e401cd8b29a6a600c26bbab4c2bf05977338fbe29c72346
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bca30203d086d78adc8e7b54a831a0b1501c64b8e1ba1bd835e5f65a387ea5e
[INFO] running `Command { std: "docker" "start" "-a" "3bca30203d086d78adc8e7b54a831a0b1501c64b8e1ba1bd835e5f65a387ea5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling linux-futex v0.1.1
[INFO] [stderr]    Compiling linux_once v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "3bca30203d086d78adc8e7b54a831a0b1501c64b8e1ba1bd835e5f65a387ea5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bca30203d086d78adc8e7b54a831a0b1501c64b8e1ba1bd835e5f65a387ea5e", kill_on_drop: false }`
[INFO] [stdout] 3bca30203d086d78adc8e7b54a831a0b1501c64b8e1ba1bd835e5f65a387ea5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d413d79c17117f5a406f9357f4afba1f060b6d51f5ee15f413ea4c0015044893
[INFO] running `Command { std: "docker" "start" "-a" "d413d79c17117f5a406f9357f4afba1f060b6d51f5ee15f413ea4c0015044893", kill_on_drop: false }`
[INFO] [stderr]    Compiling linux_once v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "d413d79c17117f5a406f9357f4afba1f060b6d51f5ee15f413ea4c0015044893", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d413d79c17117f5a406f9357f4afba1f060b6d51f5ee15f413ea4c0015044893", kill_on_drop: false }`
[INFO] [stdout] d413d79c17117f5a406f9357f4afba1f060b6d51f5ee15f413ea4c0015044893
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5f5ccce09086109bf0c160cf87718f545ef48a98586eeccf7e0fae1591a648bd
[INFO] running `Command { std: "docker" "start" "-a" "5f5ccce09086109bf0c160cf87718f545ef48a98586eeccf7e0fae1591a648bd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/linux_once-c9ba563caae1dc5c)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test our_tests::basic ... ok
[INFO] [stdout] test our_tests::multithreaded ... ok
[INFO] [stdout] test tests::smoke_once ... ok
[INFO] [stdout] test tests::stampede_once ... ok
[INFO] [stdout] test tests::poison_bad ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests linux_once
[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] running `Command { std: "docker" "inspect" "5f5ccce09086109bf0c160cf87718f545ef48a98586eeccf7e0fae1591a648bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f5ccce09086109bf0c160cf87718f545ef48a98586eeccf7e0fae1591a648bd", kill_on_drop: false }`
[INFO] [stdout] 5f5ccce09086109bf0c160cf87718f545ef48a98586eeccf7e0fae1591a648bd