[INFO] fetching crate mathlang 0.1.0...
[INFO] testing mathlang-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mathlang 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mathlang 0.1.0 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 mathlang 0.1.0
[INFO] finished tweaking crates.io crate mathlang 0.1.0
[INFO] tweaked toml for crates.io crate mathlang 0.1.0 written to /workspace/builds/worker-1/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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] f4b9c556f645c89e457978ce2b1b8a9da66d7bedb771e6d896ef3f7871884bd3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f4b9c556f645c89e457978ce2b1b8a9da66d7bedb771e6d896ef3f7871884bd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4b9c556f645c89e457978ce2b1b8a9da66d7bedb771e6d896ef3f7871884bd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4b9c556f645c89e457978ce2b1b8a9da66d7bedb771e6d896ef3f7871884bd3", kill_on_drop: false }`
[INFO] [stdout] f4b9c556f645c89e457978ce2b1b8a9da66d7bedb771e6d896ef3f7871884bd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] c49612c79fa7ebec31bc13446e0ee6acd8f925ed4343116771402781ac5a2007
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c49612c79fa7ebec31bc13446e0ee6acd8f925ed4343116771402781ac5a2007", kill_on_drop: false }`
[INFO] [stderr]    Compiling mathlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "c49612c79fa7ebec31bc13446e0ee6acd8f925ed4343116771402781ac5a2007", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c49612c79fa7ebec31bc13446e0ee6acd8f925ed4343116771402781ac5a2007", kill_on_drop: false }`
[INFO] [stdout] c49612c79fa7ebec31bc13446e0ee6acd8f925ed4343116771402781ac5a2007
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] bb64e740eb016c09bc8e07bb3b902859e0c510eb311ddbc039150cfa0df974a3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bb64e740eb016c09bc8e07bb3b902859e0c510eb311ddbc039150cfa0df974a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling mathlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.27s
[INFO] running `Command { std: "docker" "inspect" "bb64e740eb016c09bc8e07bb3b902859e0c510eb311ddbc039150cfa0df974a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb64e740eb016c09bc8e07bb3b902859e0c510eb311ddbc039150cfa0df974a3", kill_on_drop: false }`
[INFO] [stdout] bb64e740eb016c09bc8e07bb3b902859e0c510eb311ddbc039150cfa0df974a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c995bc280aadfbff6ad8bc8c809a572ca68d0caff811d377135872b8e6d56c0e
[INFO] running `Command { std: "docker" "start" "-a" "c995bc280aadfbff6ad8bc8c809a572ca68d0caff811d377135872b8e6d56c0e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 6 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mathlang-8eb154c1cc1af317)
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr]    Doc-tests mathlang
[INFO] [stdout] test parse::atomic::test::literal ... ok
[INFO] [stdout] test parse::util::tests::test_whitespace ... ok
[INFO] [stdout] test parse::atomic::test::number ... ok
[INFO] [stdout] test parse::expression::tests::expression ... ok
[INFO] [stdout] test parse::util::tests::test_skip_ws ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 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" "c995bc280aadfbff6ad8bc8c809a572ca68d0caff811d377135872b8e6d56c0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c995bc280aadfbff6ad8bc8c809a572ca68d0caff811d377135872b8e6d56c0e", kill_on_drop: false }`
[INFO] [stdout] c995bc280aadfbff6ad8bc8c809a572ca68d0caff811d377135872b8e6d56c0e