[INFO] fetching crate cargo-cover 0.0.0...
[INFO] testing cargo-cover-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate cargo-cover 0.0.0 into /workspace/builds/worker-101/source
[INFO] validating manifest of crates.io crate cargo-cover 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 cargo-cover 0.0.0
[INFO] finished tweaking crates.io crate cargo-cover 0.0.0
[INFO] tweaked toml for crates.io crate cargo-cover 0.0.0 written to /workspace/builds/worker-101/source/Cargo.toml
[INFO] crate crates.io crate cargo-cover 0.0.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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] cac722bbff112641648290d6c6675f763e6a1b432204f084c19e3f4286a9b802
[INFO] running `Command { std: "docker" "start" "-a" "cac722bbff112641648290d6c6675f763e6a1b432204f084c19e3f4286a9b802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cac722bbff112641648290d6c6675f763e6a1b432204f084c19e3f4286a9b802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cac722bbff112641648290d6c6675f763e6a1b432204f084c19e3f4286a9b802", kill_on_drop: false }`
[INFO] [stdout] cac722bbff112641648290d6c6675f763e6a1b432204f084c19e3f4286a9b802
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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] db83c851ebc42366c936efcfc42ed4819189ff91a38d033dacde620fb62c5b81
[INFO] running `Command { std: "docker" "start" "-a" "db83c851ebc42366c936efcfc42ed4819189ff91a38d033dacde620fb62c5b81", kill_on_drop: false }`
[INFO] [stderr]    Compiling cargo-cover v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "db83c851ebc42366c936efcfc42ed4819189ff91a38d033dacde620fb62c5b81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db83c851ebc42366c936efcfc42ed4819189ff91a38d033dacde620fb62c5b81", kill_on_drop: false }`
[INFO] [stdout] db83c851ebc42366c936efcfc42ed4819189ff91a38d033dacde620fb62c5b81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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] b468f544ed27b59fd1ce4ab63a2cbb91bd37edcdc8ae87cfd7a8ca91a1786bed
[INFO] running `Command { std: "docker" "start" "-a" "b468f544ed27b59fd1ce4ab63a2cbb91bd37edcdc8ae87cfd7a8ca91a1786bed", kill_on_drop: false }`
[INFO] [stderr]    Compiling cargo-cover v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `Command { std: "docker" "inspect" "b468f544ed27b59fd1ce4ab63a2cbb91bd37edcdc8ae87cfd7a8ca91a1786bed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b468f544ed27b59fd1ce4ab63a2cbb91bd37edcdc8ae87cfd7a8ca91a1786bed", kill_on_drop: false }`
[INFO] [stdout] b468f544ed27b59fd1ce4ab63a2cbb91bd37edcdc8ae87cfd7a8ca91a1786bed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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] b008bc6910ff51c85d3b7556355610094600f4b3e365c8723465fdd0a15cf2cd
[INFO] running `Command { std: "docker" "start" "-a" "b008bc6910ff51c85d3b7556355610094600f4b3e365c8723465fdd0a15cf2cd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cargo_cover-ba8d665c4044dd9b)
[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" "b008bc6910ff51c85d3b7556355610094600f4b3e365c8723465fdd0a15cf2cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b008bc6910ff51c85d3b7556355610094600f4b3e365c8723465fdd0a15cf2cd", kill_on_drop: false }`
[INFO] [stdout] b008bc6910ff51c85d3b7556355610094600f4b3e365c8723465fdd0a15cf2cd