[INFO] fetching crate cycle 0.2.1...
[INFO] testing cycle-0.2.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate cycle 0.2.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cycle 0.2.1 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 cycle 0.2.1
[INFO] finished tweaking crates.io crate cycle 0.2.1
[INFO] tweaked toml for crates.io crate cycle 0.2.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate cycle 0.2.1 already has a lockfile, it will not be regenerated
[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] [stdout] a5338c541de6ca7529c9e4443ad80b01a6c2fea05d3c79859b91de652333ba82
[INFO] running `Command { std: "docker" "start" "-a" "a5338c541de6ca7529c9e4443ad80b01a6c2fea05d3c79859b91de652333ba82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5338c541de6ca7529c9e4443ad80b01a6c2fea05d3c79859b91de652333ba82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5338c541de6ca7529c9e4443ad80b01a6c2fea05d3c79859b91de652333ba82", kill_on_drop: false }`
[INFO] [stdout] a5338c541de6ca7529c9e4443ad80b01a6c2fea05d3c79859b91de652333ba82
[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] [stdout] 1bc2128f3d99fb2316490e4427001891284611350e68cd9a077f9377e7ab26f3
[INFO] running `Command { std: "docker" "start" "-a" "1bc2128f3d99fb2316490e4427001891284611350e68cd9a077f9377e7ab26f3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cycle v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.84s
[INFO] running `Command { std: "docker" "inspect" "1bc2128f3d99fb2316490e4427001891284611350e68cd9a077f9377e7ab26f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bc2128f3d99fb2316490e4427001891284611350e68cd9a077f9377e7ab26f3", kill_on_drop: false }`
[INFO] [stdout] 1bc2128f3d99fb2316490e4427001891284611350e68cd9a077f9377e7ab26f3
[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] 5648128f7c82c836244f96c84ef9e18fe115d9e3067dbf3f0c2d7668bdc499a3
[INFO] running `Command { std: "docker" "start" "-a" "5648128f7c82c836244f96c84ef9e18fe115d9e3067dbf3f0c2d7668bdc499a3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cycle v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "5648128f7c82c836244f96c84ef9e18fe115d9e3067dbf3f0c2d7668bdc499a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5648128f7c82c836244f96c84ef9e18fe115d9e3067dbf3f0c2d7668bdc499a3", kill_on_drop: false }`
[INFO] [stdout] 5648128f7c82c836244f96c84ef9e18fe115d9e3067dbf3f0c2d7668bdc499a3
[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] [stdout] 41e4e118133d4d3c12de7fb3c7ff49e1e42772fb2da6e1a76172936b822daf72
[INFO] running `Command { std: "docker" "start" "-a" "41e4e118133d4d3c12de7fb3c7ff49e1e42772fb2da6e1a76172936b822daf72", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cycle-c8ee4f5474072f95)
[INFO] [stdout] running 5 tests
[INFO] [stdout] test base::ring::num_rational::tests::dom ... ok
[INFO] [stdout] test base::ring::num_rational::tests::ops ... ok
[INFO] [stdout] test base::ring::poly::tests::dom ... ok
[INFO] [stdout] test base::ring::num_integer::tests::dom ... ok
[INFO] [stdout] test base::ring::poly::tests::ops ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/alg.rs (/opt/rustwide/target/debug/deps/alg-dd3b8e285944eca3)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test simplification ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cycle
[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" "41e4e118133d4d3c12de7fb3c7ff49e1e42772fb2da6e1a76172936b822daf72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41e4e118133d4d3c12de7fb3c7ff49e1e42772fb2da6e1a76172936b822daf72", kill_on_drop: false }`
[INFO] [stdout] 41e4e118133d4d3c12de7fb3c7ff49e1e42772fb2da6e1a76172936b822daf72