[INFO] fetching crate hamilton 0.0.0...
[INFO] testing hamilton-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate hamilton 0.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate hamilton 0.0.0 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 hamilton 0.0.0
[INFO] finished tweaking crates.io crate hamilton 0.0.0
[INFO] tweaked toml for crates.io crate hamilton 0.0.0 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 6daa072f90f9091073aaa5a9d5fff07203e45c29a6f2bf9263a1635678d7df26
[INFO] running `Command { std: "docker" "start" "-a" "6daa072f90f9091073aaa5a9d5fff07203e45c29a6f2bf9263a1635678d7df26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6daa072f90f9091073aaa5a9d5fff07203e45c29a6f2bf9263a1635678d7df26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6daa072f90f9091073aaa5a9d5fff07203e45c29a6f2bf9263a1635678d7df26", kill_on_drop: false }`
[INFO] [stdout] 6daa072f90f9091073aaa5a9d5fff07203e45c29a6f2bf9263a1635678d7df26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3c8fca40ba24ec5bed53f547af281ec100ed8420d0d4a35754581933eb344735
[INFO] running `Command { std: "docker" "start" "-a" "3c8fca40ba24ec5bed53f547af281ec100ed8420d0d4a35754581933eb344735", kill_on_drop: false }`
[INFO] [stderr]    Compiling hamilton v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "3c8fca40ba24ec5bed53f547af281ec100ed8420d0d4a35754581933eb344735", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c8fca40ba24ec5bed53f547af281ec100ed8420d0d4a35754581933eb344735", kill_on_drop: false }`
[INFO] [stdout] 3c8fca40ba24ec5bed53f547af281ec100ed8420d0d4a35754581933eb344735
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 3fd8c8b5ed775bb90b2ba54c404ad16a4e7ff7bc827b6ed56d01dcd9c8f614e5
[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" "3fd8c8b5ed775bb90b2ba54c404ad16a4e7ff7bc827b6ed56d01dcd9c8f614e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling hamilton v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "3fd8c8b5ed775bb90b2ba54c404ad16a4e7ff7bc827b6ed56d01dcd9c8f614e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fd8c8b5ed775bb90b2ba54c404ad16a4e7ff7bc827b6ed56d01dcd9c8f614e5", kill_on_drop: false }`
[INFO] [stdout] 3fd8c8b5ed775bb90b2ba54c404ad16a4e7ff7bc827b6ed56d01dcd9c8f614e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 6cff1b6a746b07dcc928f7d3fa056a6dbba0996c104f5bca9b2ab55af9f5babd
[INFO] running `Command { std: "docker" "start" "-a" "6cff1b6a746b07dcc928f7d3fa056a6dbba0996c104f5bca9b2ab55af9f5babd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hamilton-677aed79fb041add)
[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] [stderr]    Doc-tests hamilton
[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" "6cff1b6a746b07dcc928f7d3fa056a6dbba0996c104f5bca9b2ab55af9f5babd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cff1b6a746b07dcc928f7d3fa056a6dbba0996c104f5bca9b2ab55af9f5babd", kill_on_drop: false }`
[INFO] [stdout] 6cff1b6a746b07dcc928f7d3fa056a6dbba0996c104f5bca9b2ab55af9f5babd