[INFO] fetching crate witcher 0.1.19...
[INFO] testing witcher-0.1.19 against 1.55.0 for beta-1.56-1
[INFO] extracting crate witcher 0.1.19 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate witcher 0.1.19 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 witcher 0.1.19
[INFO] finished tweaking crates.io crate witcher 0.1.19
[INFO] tweaked toml for crates.io crate witcher 0.1.19 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate witcher 0.1.19 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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] ce6530a58c5963714c4bf96c1193f7d8e3c8748409fb2d8beab4f858c9c6c2f9
[INFO] running `Command { std: "docker" "start" "-a" "ce6530a58c5963714c4bf96c1193f7d8e3c8748409fb2d8beab4f858c9c6c2f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce6530a58c5963714c4bf96c1193f7d8e3c8748409fb2d8beab4f858c9c6c2f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce6530a58c5963714c4bf96c1193f7d8e3c8748409fb2d8beab4f858c9c6c2f9", kill_on_drop: false }`
[INFO] [stdout] ce6530a58c5963714c4bf96c1193f7d8e3c8748409fb2d8beab4f858c9c6c2f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 6d3c50fc84e201dbc21009e36e20373ec1e6f73546c63397d0b31e946c3ba2fd
[INFO] running `Command { std: "docker" "start" "-a" "6d3c50fc84e201dbc21009e36e20373ec1e6f73546c63397d0b31e946c3ba2fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling object v0.22.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling gory v0.1.7
[INFO] [stderr]    Compiling addr2line v0.14.0
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling witcher v0.1.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.52s
[INFO] running `Command { std: "docker" "inspect" "6d3c50fc84e201dbc21009e36e20373ec1e6f73546c63397d0b31e946c3ba2fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d3c50fc84e201dbc21009e36e20373ec1e6f73546c63397d0b31e946c3ba2fd", kill_on_drop: false }`
[INFO] [stdout] 6d3c50fc84e201dbc21009e36e20373ec1e6f73546c63397d0b31e946c3ba2fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] bb6e15454bed6ce2c044b2d9407f33a42273e90690f0eb594164d30d362dee65
[INFO] running `Command { std: "docker" "start" "-a" "bb6e15454bed6ce2c044b2d9407f33a42273e90690f0eb594164d30d362dee65", kill_on_drop: false }`
[INFO] [stderr]    Compiling witcher v0.1.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "bb6e15454bed6ce2c044b2d9407f33a42273e90690f0eb594164d30d362dee65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb6e15454bed6ce2c044b2d9407f33a42273e90690f0eb594164d30d362dee65", kill_on_drop: false }`
[INFO] [stdout] bb6e15454bed6ce2c044b2d9407f33a42273e90690f0eb594164d30d362dee65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 8708a4d67ece2ce2b8f8793b921b2b5f8c3d0334c1691ada446c0fe5844bf744
[INFO] running `Command { std: "docker" "start" "-a" "8708a4d67ece2ce2b8f8793b921b2b5f8c3d0334c1691ada446c0fe5844bf744", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/witcher-9f608af91048d66e)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test backtrace::tests::test_frame_equality ... ok
[INFO] [stdout] test backtrace::tests::test_omit ... ok
[INFO] [stdout] test backtrace::tests::test_simple_path ... ok
[INFO] [stdout] test tests::test_match_err ... ok
[INFO] [stdout] test tests::test_single ... ok
[INFO] [stdout] test error::tests::test_chained_cause ... ok
[INFO] [stdout] test wrapper::tests::test_pass ... ok
[INFO] [stdout] test tests::test_bail ... ok
[INFO] [stdout] test wrapper::tests::test_retry_on ... ok
[INFO] [stdout] test error::tests::test_assist_methods ... ok
[INFO] [stdout] test tests::test_err ... ok
[INFO] [stdout] test error::tests::test_ext_and_last ... ok
[INFO] [stdout] test error::tests::test_output_levels ... ok
[INFO] [stdout] test tests::test_wrap ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.39s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests witcher
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - bail (line 31) ... ignored
[INFO] [stdout] test src/lib.rs - err (line 54) ... ignored
[INFO] [stdout] test src/lib.rs - wrap (line 76) ... ignored
[INFO] [stdout] test src/lib.rs - prelude (line 14) ... ok
[INFO] [stdout] test src/lib.rs - match_err (line 97) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 3 ignored; 0 measured; 0 filtered out; finished in 0.49s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8708a4d67ece2ce2b8f8793b921b2b5f8c3d0334c1691ada446c0fe5844bf744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8708a4d67ece2ce2b8f8793b921b2b5f8c3d0334c1691ada446c0fe5844bf744", kill_on_drop: false }`
[INFO] [stdout] 8708a4d67ece2ce2b8f8793b921b2b5f8c3d0334c1691ada446c0fe5844bf744