[INFO] fetching crate fifo-set 1.0.0...
[INFO] testing fifo-set-1.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate fifo-set 1.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate fifo-set 1.0.0 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 fifo-set 1.0.0
[INFO] finished tweaking crates.io crate fifo-set 1.0.0
[INFO] tweaked toml for crates.io crate fifo-set 1.0.0 written to /workspace/builds/worker-12/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] 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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6f0b7b5f67769e19a5e5613167e04e4691674512aa481f1446a9b20f590bad85
[INFO] running `Command { std: "docker" "start" "-a" "6f0b7b5f67769e19a5e5613167e04e4691674512aa481f1446a9b20f590bad85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f0b7b5f67769e19a5e5613167e04e4691674512aa481f1446a9b20f590bad85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f0b7b5f67769e19a5e5613167e04e4691674512aa481f1446a9b20f590bad85", kill_on_drop: false }`
[INFO] [stdout] 6f0b7b5f67769e19a5e5613167e04e4691674512aa481f1446a9b20f590bad85
[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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a4e9dc7708770b90d6b14e2f96970ff4600d6ed3cb8180bbb5f294fbf830346
[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" "7a4e9dc7708770b90d6b14e2f96970ff4600d6ed3cb8180bbb5f294fbf830346", kill_on_drop: false }`
[INFO] [stderr]    Compiling fifo-set v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "7a4e9dc7708770b90d6b14e2f96970ff4600d6ed3cb8180bbb5f294fbf830346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a4e9dc7708770b90d6b14e2f96970ff4600d6ed3cb8180bbb5f294fbf830346", kill_on_drop: false }`
[INFO] [stdout] 7a4e9dc7708770b90d6b14e2f96970ff4600d6ed3cb8180bbb5f294fbf830346
[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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 71c9451d1aababda034331d9787721a1865380d1e0c6ba9a2710369cd7d5e492
[INFO] running `Command { std: "docker" "start" "-a" "71c9451d1aababda034331d9787721a1865380d1e0c6ba9a2710369cd7d5e492", kill_on_drop: false }`
[INFO] [stderr]    Compiling fifo-set v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "71c9451d1aababda034331d9787721a1865380d1e0c6ba9a2710369cd7d5e492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71c9451d1aababda034331d9787721a1865380d1e0c6ba9a2710369cd7d5e492", kill_on_drop: false }`
[INFO] [stdout] 71c9451d1aababda034331d9787721a1865380d1e0c6ba9a2710369cd7d5e492
[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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 20fdc0ca7552072307fb003a9d53b1eeb917bbb212b0b942b795615a983e98dc
[INFO] running `Command { std: "docker" "start" "-a" "20fdc0ca7552072307fb003a9d53b1eeb917bbb212b0b942b795615a983e98dc", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fifo_set-76d9a52a6feecd10)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fifo-set
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "20fdc0ca7552072307fb003a9d53b1eeb917bbb212b0b942b795615a983e98dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20fdc0ca7552072307fb003a9d53b1eeb917bbb212b0b942b795615a983e98dc", kill_on_drop: false }`
[INFO] [stdout] 20fdc0ca7552072307fb003a9d53b1eeb917bbb212b0b942b795615a983e98dc