[INFO] fetching crate len-trait 0.6.1...
[INFO] testing len-trait-0.6.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate len-trait 0.6.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate len-trait 0.6.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate len-trait 0.6.1
[INFO] finished tweaking crates.io crate len-trait 0.6.1
[INFO] tweaked toml for crates.io crate len-trait 0.6.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fe361d72a048f62c119f42bfc2e668c106a168dc7e3b512b2fdd3b5075ab2bb
[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" "6fe361d72a048f62c119f42bfc2e668c106a168dc7e3b512b2fdd3b5075ab2bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fe361d72a048f62c119f42bfc2e668c106a168dc7e3b512b2fdd3b5075ab2bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fe361d72a048f62c119f42bfc2e668c106a168dc7e3b512b2fdd3b5075ab2bb", kill_on_drop: false }`
[INFO] [stdout] 6fe361d72a048f62c119f42bfc2e668c106a168dc7e3b512b2fdd3b5075ab2bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c44754568e22c0bb599e10aa968c8528485f8368dfa21cb13cfc0d156b14f05e
[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" "c44754568e22c0bb599e10aa968c8528485f8368dfa21cb13cfc0d156b14f05e", kill_on_drop: false }`
[INFO] [stderr]    Compiling len-trait v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "c44754568e22c0bb599e10aa968c8528485f8368dfa21cb13cfc0d156b14f05e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c44754568e22c0bb599e10aa968c8528485f8368dfa21cb13cfc0d156b14f05e", kill_on_drop: false }`
[INFO] [stdout] c44754568e22c0bb599e10aa968c8528485f8368dfa21cb13cfc0d156b14f05e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", 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] 7d4709e43ef64beab9850cb53e4c4a1972f34b98203bfc03a8f517a6bced5f3e
[INFO] running `Command { std: "docker" "start" "-a" "7d4709e43ef64beab9850cb53e4c4a1972f34b98203bfc03a8f517a6bced5f3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling len-trait v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "7d4709e43ef64beab9850cb53e4c4a1972f34b98203bfc03a8f517a6bced5f3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d4709e43ef64beab9850cb53e4c4a1972f34b98203bfc03a8f517a6bced5f3e", kill_on_drop: false }`
[INFO] [stdout] 7d4709e43ef64beab9850cb53e4c4a1972f34b98203bfc03a8f517a6bced5f3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 806fdac96b9930b1dae575353855c423ffa80d5e7100265e544c84b29b257500
[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" "806fdac96b9930b1dae575353855c423ffa80d5e7100265e544c84b29b257500", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/len_trait-6e8ff3e6ba6b0921
[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
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests len-trait
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/capacity.rs - capacity::CapacityMut::shrink_to_fit (line 150) ... ok
[INFO] [stdout] test src/len.rs - len::LenMut::truncate (line 101) ... ok
[INFO] [stdout] test src/len.rs - len::Len::len (line 40) ... ok
[INFO] [stdout] test src/len.rs - len::Clear::clear (line 64) ... ok
[INFO] [stdout] test src/len.rs - len::Empty::is_empty (line 11) ... ok
[INFO] [stdout] test src/capacity.rs - capacity::CapacityMut::reserve (line 93) ... ok
[INFO] [stdout] test src/len.rs - len::LenMut::split_off (line 127) ... ok
[INFO] [stdout] test src/capacity.rs - capacity::CapacityMut::reserve_exact (line 113) ... ok
[INFO] [stdout] test src/capacity.rs - capacity::Capacity::capacity (line 19) ... ok
[INFO] [stdout] test src/capacity.rs - capacity::WithCapacity::with_capacity (line 57) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "806fdac96b9930b1dae575353855c423ffa80d5e7100265e544c84b29b257500", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "806fdac96b9930b1dae575353855c423ffa80d5e7100265e544c84b29b257500", kill_on_drop: false }`
[INFO] [stdout] 806fdac96b9930b1dae575353855c423ffa80d5e7100265e544c84b29b257500