[INFO] fetching crate cov-mark 2.0.0-pre.1...
[INFO] testing cov-mark-2.0.0-pre.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate cov-mark 2.0.0-pre.1 into /workspace/builds/worker-44/source
[INFO] validating manifest of crates.io crate cov-mark 2.0.0-pre.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 cov-mark 2.0.0-pre.1
[INFO] finished tweaking crates.io crate cov-mark 2.0.0-pre.1
[INFO] tweaked toml for crates.io crate cov-mark 2.0.0-pre.1 written to /workspace/builds/worker-44/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-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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] 04daec1a2bcb29da4c8504cf77aa3257662c4fbd185d792e98307128355fcdf0
[INFO] running `Command { std: "docker" "start" "-a" "04daec1a2bcb29da4c8504cf77aa3257662c4fbd185d792e98307128355fcdf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04daec1a2bcb29da4c8504cf77aa3257662c4fbd185d792e98307128355fcdf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04daec1a2bcb29da4c8504cf77aa3257662c4fbd185d792e98307128355fcdf0", kill_on_drop: false }`
[INFO] [stdout] 04daec1a2bcb29da4c8504cf77aa3257662c4fbd185d792e98307128355fcdf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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] 5a11bca0cb8ea7a6d2e66ba8de493c6e4312b91b856444a35dd73cf10e71a736
[INFO] running `Command { std: "docker" "start" "-a" "5a11bca0cb8ea7a6d2e66ba8de493c6e4312b91b856444a35dd73cf10e71a736", kill_on_drop: false }`
[INFO] [stderr]    Compiling cov-mark v2.0.0-pre.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "5a11bca0cb8ea7a6d2e66ba8de493c6e4312b91b856444a35dd73cf10e71a736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a11bca0cb8ea7a6d2e66ba8de493c6e4312b91b856444a35dd73cf10e71a736", kill_on_drop: false }`
[INFO] [stdout] 5a11bca0cb8ea7a6d2e66ba8de493c6e4312b91b856444a35dd73cf10e71a736
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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] 132db7932c97b2ff600edc8e728fb0b9cea86b9b7f1b33c39b7682c3270c408a
[INFO] running `Command { std: "docker" "start" "-a" "132db7932c97b2ff600edc8e728fb0b9cea86b9b7f1b33c39b7682c3270c408a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cov-mark v2.0.0-pre.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "132db7932c97b2ff600edc8e728fb0b9cea86b9b7f1b33c39b7682c3270c408a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "132db7932c97b2ff600edc8e728fb0b9cea86b9b7f1b33c39b7682c3270c408a", kill_on_drop: false }`
[INFO] [stdout] 132db7932c97b2ff600edc8e728fb0b9cea86b9b7f1b33c39b7682c3270c408a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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] f3a8ed22fa4def523bbcb47ff63db9dfd54c99eed7146bcc132f69f0c1eb5271
[INFO] running `Command { std: "docker" "start" "-a" "f3a8ed22fa4def523bbcb47ff63db9dfd54c99eed7146bcc132f69f0c1eb5271", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.43s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cov_mark-156640e2c56efe39)
[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]      Running tests/smoke.rs (/opt/rustwide/target/debug/deps/smoke-2de3dbb83869af44)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_drop_count ... ok
[INFO] [stdout] test test_safe_divide_by_zero ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cov-mark
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/lib.rs - check (line 123) ... ok
[INFO] [stdout] test src/lib.rs - hit (line 103) ... ok
[INFO] [stdout] test src/lib.rs - check_count (line 148) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f3a8ed22fa4def523bbcb47ff63db9dfd54c99eed7146bcc132f69f0c1eb5271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3a8ed22fa4def523bbcb47ff63db9dfd54c99eed7146bcc132f69f0c1eb5271", kill_on_drop: false }`
[INFO] [stdout] f3a8ed22fa4def523bbcb47ff63db9dfd54c99eed7146bcc132f69f0c1eb5271