[INFO] fetching crate meap 0.5.1...
[INFO] testing meap-0.5.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate meap 0.5.1 into /workspace/builds/worker-54/source
[INFO] validating manifest of crates.io crate meap 0.5.1 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 meap 0.5.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate meap 0.5.1
[INFO] tweaked toml for crates.io crate meap 0.5.1 written to /workspace/builds/worker-54/source/Cargo.toml
[INFO] crate crates.io crate meap 0.5.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] 0486d2abf1352d4ea13d53ca4d0521af13bb57220476b16d56e792b8553f2d4d
[INFO] running `Command { std: "docker" "start" "-a" "0486d2abf1352d4ea13d53ca4d0521af13bb57220476b16d56e792b8553f2d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0486d2abf1352d4ea13d53ca4d0521af13bb57220476b16d56e792b8553f2d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0486d2abf1352d4ea13d53ca4d0521af13bb57220476b16d56e792b8553f2d4d", kill_on_drop: false }`
[INFO] [stdout] 0486d2abf1352d4ea13d53ca4d0521af13bb57220476b16d56e792b8553f2d4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] 218c1298db1818725a500661cb4236562033e6ac07a33f220d1e4018ea81cec4
[INFO] running `Command { std: "docker" "start" "-a" "218c1298db1818725a500661cb4236562033e6ac07a33f220d1e4018ea81cec4", kill_on_drop: false }`
[INFO] [stderr]    Compiling meap v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "218c1298db1818725a500661cb4236562033e6ac07a33f220d1e4018ea81cec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "218c1298db1818725a500661cb4236562033e6ac07a33f220d1e4018ea81cec4", kill_on_drop: false }`
[INFO] [stdout] 218c1298db1818725a500661cb4236562033e6ac07a33f220d1e4018ea81cec4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] 8b8340567592ee0ea48238002355cde300ea13a862c85e026478b6ba4e37a0d8
[INFO] running `Command { std: "docker" "start" "-a" "8b8340567592ee0ea48238002355cde300ea13a862c85e026478b6ba4e37a0d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling parse_duration v2.1.1
[INFO] [stderr]    Compiling meap v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 11.26s
[INFO] running `Command { std: "docker" "inspect" "8b8340567592ee0ea48238002355cde300ea13a862c85e026478b6ba4e37a0d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b8340567592ee0ea48238002355cde300ea13a862c85e026478b6ba4e37a0d8", kill_on_drop: false }`
[INFO] [stdout] 8b8340567592ee0ea48238002355cde300ea13a862c85e026478b6ba4e37a0d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] 5f4ce28ed6c6cd27599255e600fab61c4870faf362572b988b738807efa4aeef
[INFO] running `Command { std: "docker" "start" "-a" "5f4ce28ed6c6cd27599255e600fab61c4870faf362572b988b738807efa4aeef", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.29s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/meap-233f42cc3b466157)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests meap
[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] [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" "5f4ce28ed6c6cd27599255e600fab61c4870faf362572b988b738807efa4aeef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f4ce28ed6c6cd27599255e600fab61c4870faf362572b988b738807efa4aeef", kill_on_drop: false }`
[INFO] [stdout] 5f4ce28ed6c6cd27599255e600fab61c4870faf362572b988b738807efa4aeef