[INFO] fetching crate rack 0.0.1...
[INFO] testing rack-0.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate rack 0.0.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate rack 0.0.1 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 rack 0.0.1
[INFO] finished tweaking crates.io crate rack 0.0.1
[INFO] tweaked toml for crates.io crate rack 0.0.1 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] [stdout] 9cfd7357a5233baffbb9044154773babd44544698fcda631dcdf28200d9cdbeb
[INFO] running `Command { std: "docker" "start" "-a" "9cfd7357a5233baffbb9044154773babd44544698fcda631dcdf28200d9cdbeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cfd7357a5233baffbb9044154773babd44544698fcda631dcdf28200d9cdbeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cfd7357a5233baffbb9044154773babd44544698fcda631dcdf28200d9cdbeb", kill_on_drop: false }`
[INFO] [stdout] 9cfd7357a5233baffbb9044154773babd44544698fcda631dcdf28200d9cdbeb
[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] ec3160566b91eda7876d9a21f08de0d01a1497c4c4ec5e992e841f02600d6faa
[INFO] running `Command { std: "docker" "start" "-a" "ec3160566b91eda7876d9a21f08de0d01a1497c4c4ec5e992e841f02600d6faa", kill_on_drop: false }`
[INFO] [stderr]    Compiling rack v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "ec3160566b91eda7876d9a21f08de0d01a1497c4c4ec5e992e841f02600d6faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec3160566b91eda7876d9a21f08de0d01a1497c4c4ec5e992e841f02600d6faa", kill_on_drop: false }`
[INFO] [stdout] ec3160566b91eda7876d9a21f08de0d01a1497c4c4ec5e992e841f02600d6faa
[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] [stdout] 99c901b366c6cf915aa7082fa735d585bdbb35d3cc06f35b8eee11df199579f0
[INFO] running `Command { std: "docker" "start" "-a" "99c901b366c6cf915aa7082fa735d585bdbb35d3cc06f35b8eee11df199579f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling rack v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "99c901b366c6cf915aa7082fa735d585bdbb35d3cc06f35b8eee11df199579f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99c901b366c6cf915aa7082fa735d585bdbb35d3cc06f35b8eee11df199579f0", kill_on_drop: false }`
[INFO] [stdout] 99c901b366c6cf915aa7082fa735d585bdbb35d3cc06f35b8eee11df199579f0
[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] [stdout] 368abf0a6de5000ec603ecce9750ce9ad1d434d4d2820d54089bd4e8aadb7899
[INFO] running `Command { std: "docker" "start" "-a" "368abf0a6de5000ec603ecce9750ce9ad1d434d4d2820d54089bd4e8aadb7899", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rack-2af1967999edb91a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... 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 rack
[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" "368abf0a6de5000ec603ecce9750ce9ad1d434d4d2820d54089bd4e8aadb7899", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "368abf0a6de5000ec603ecce9750ce9ad1d434d4d2820d54089bd4e8aadb7899", kill_on_drop: false }`
[INFO] [stdout] 368abf0a6de5000ec603ecce9750ce9ad1d434d4d2820d54089bd4e8aadb7899