[INFO] fetching crate length 0.2.0...
[INFO] testing length-0.2.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate length 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate length 0.2.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate length 0.2.0
[INFO] finished tweaking crates.io crate length 0.2.0
[INFO] tweaked toml for crates.io crate length 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] 42ba1e17094f4f34fa754d28c1f8b2b4eb14f1080922f1620a77bebf4b9e5911
[INFO] running `Command { std: "docker" "start" "-a" "42ba1e17094f4f34fa754d28c1f8b2b4eb14f1080922f1620a77bebf4b9e5911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42ba1e17094f4f34fa754d28c1f8b2b4eb14f1080922f1620a77bebf4b9e5911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42ba1e17094f4f34fa754d28c1f8b2b4eb14f1080922f1620a77bebf4b9e5911", kill_on_drop: false }`
[INFO] [stdout] 42ba1e17094f4f34fa754d28c1f8b2b4eb14f1080922f1620a77bebf4b9e5911
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f92895a3587dc8e941ef37c46b3c8cb55d49a6d100c916db1eb65db7aeb49b6b
[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" "f92895a3587dc8e941ef37c46b3c8cb55d49a6d100c916db1eb65db7aeb49b6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling length v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "f92895a3587dc8e941ef37c46b3c8cb55d49a6d100c916db1eb65db7aeb49b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f92895a3587dc8e941ef37c46b3c8cb55d49a6d100c916db1eb65db7aeb49b6b", kill_on_drop: false }`
[INFO] [stdout] f92895a3587dc8e941ef37c46b3c8cb55d49a6d100c916db1eb65db7aeb49b6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be9b93b38b40384fc9fb4cc48697fb1bbcd830635ba0f5bca04f069b3c21b775
[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" "be9b93b38b40384fc9fb4cc48697fb1bbcd830635ba0f5bca04f069b3c21b775", kill_on_drop: false }`
[INFO] [stderr]    Compiling length v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.62s
[INFO] running `Command { std: "docker" "inspect" "be9b93b38b40384fc9fb4cc48697fb1bbcd830635ba0f5bca04f069b3c21b775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be9b93b38b40384fc9fb4cc48697fb1bbcd830635ba0f5bca04f069b3c21b775", kill_on_drop: false }`
[INFO] [stdout] be9b93b38b40384fc9fb4cc48697fb1bbcd830635ba0f5bca04f069b3c21b775
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e677071a78f2add0021ba61e5e1b2484c299bdfed37bb38c74eb2c4b8c33ac2b
[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" "e677071a78f2add0021ba61e5e1b2484c299bdfed37bb38c74eb2c4b8c33ac2b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/length-2b7648e90294b297
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/integration_tests-f9b67c940e330d7c
[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 37 tests
[INFO] [stdout] test test_from_cm_to_x ... ok
[INFO] [stdout] test test_from_dm_to_x ... ok
[INFO] [stdout] test test_from_km_to_x ... ok
[INFO] [stdout] test test_add ... ok
[INFO] [stdout] test test_au_to_x ... ok
[INFO] [stdout] test test_default ... ok
[INFO] [stdout] test test_astronomic_to_imperial ... ok
[INFO] [stdout] test test_astronomic_to_metric ... ok
[INFO] [stdout] test test_foot_to_x ... ok
[INFO] [stdout] test test_from_m_to_x ... ok
[INFO] [stdout] test test_from_mm_to_x ... ok
[INFO] [stdout] test test_get_original_string ... ok
[INFO] [stdout] test test_multiply_by_ref ... ok
[INFO] [stdout] test test_new_string ... ok
[INFO] [stdout] test test_new_value_unit ... ok
[INFO] [stdout] test test_multiply_by ... ok
[INFO] [stdout] test test_mile_to_x ... ok
[INFO] [stdout] test test_ly_to_x ... ok
[INFO] [stdout] test test_inch_to_x ... ok
[INFO] [stdout] test test_imperial_to_metric ... ok
[INFO] [stdout] test test_new_value_unit_with_simplified_unit ... ok
[INFO] [stdout] test test_normalize ... ok
[INFO] [stdout] test test_pc_to_x ... ok
[INFO] [stdout] test test_subtract ... ok
[INFO] [stdout] test test_add_by_ref ... ok
[INFO] [stdout] test test_new ... ok
[INFO] [stdout] test test_metric_to_imperial ... ok
[INFO] [stdout] test test_from_km_to_x_by_ref ... ok
[INFO] [stdout] test test_subtract_by_ref ... ok
[INFO] [stdout] test test_divide_by_ref ... ok
[INFO] [stdout] test test_to_string_for_astronomics ... ok
[INFO] [stdout] test test_to_string_for_imperials ... ok
[INFO] [stdout] test test_divide_by ... ok
[INFO] [stdout] test test_imperial_to_astronomic ... ok
[INFO] [stdout] test test_metric_to_astronomic ... ok
[INFO] [stdout] test test_to_string_for_metrics ... ok
[INFO] [stdout] test test_yard_to_x ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 37 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests length
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --test /opt/rustwide/workdir/src/lib.rs --crate-name length -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-b2d06f7d60fcbb27.rlib --extern length=/opt/rustwide/target/debug/deps/liblength-934c6fa0a4cefd73.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-88a1e75c7e2bfbce.rlib -C embed-bitcode=no` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "e677071a78f2add0021ba61e5e1b2484c299bdfed37bb38c74eb2c4b8c33ac2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e677071a78f2add0021ba61e5e1b2484c299bdfed37bb38c74eb2c4b8c33ac2b", kill_on_drop: false }`
[INFO] [stdout] e677071a78f2add0021ba61e5e1b2484c299bdfed37bb38c74eb2c4b8c33ac2b