[INFO] fetching crate unicode-reverse 1.0.8...
[INFO] testing unicode-reverse-1.0.8 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate unicode-reverse 1.0.8 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate unicode-reverse 1.0.8 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 unicode-reverse 1.0.8
[INFO] finished tweaking crates.io crate unicode-reverse 1.0.8
[INFO] tweaked toml for crates.io crate unicode-reverse 1.0.8 written to /workspace/builds/worker-2/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded env_logger v0.3.5
[INFO] [stderr]   Downloaded quickcheck v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 4e7aafbd94c3dc61bdf837b88fc360b0a52e6d87578195c8edb3ab84911682bf
[INFO] running `Command { std: "docker" "start" "-a" "4e7aafbd94c3dc61bdf837b88fc360b0a52e6d87578195c8edb3ab84911682bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e7aafbd94c3dc61bdf837b88fc360b0a52e6d87578195c8edb3ab84911682bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e7aafbd94c3dc61bdf837b88fc360b0a52e6d87578195c8edb3ab84911682bf", kill_on_drop: false }`
[INFO] [stdout] 4e7aafbd94c3dc61bdf837b88fc360b0a52e6d87578195c8edb3ab84911682bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 6dd4b3a8c61d37bad74c3dc3d4c21f7b27b38206ad719ac2e4855f6553845cf4
[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" "6dd4b3a8c61d37bad74c3dc3d4c21f7b27b38206ad719ac2e4855f6553845cf4", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-reverse v1.0.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "6dd4b3a8c61d37bad74c3dc3d4c21f7b27b38206ad719ac2e4855f6553845cf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dd4b3a8c61d37bad74c3dc3d4c21f7b27b38206ad719ac2e4855f6553845cf4", kill_on_drop: false }`
[INFO] [stdout] 6dd4b3a8c61d37bad74c3dc3d4c21f7b27b38206ad719ac2e4855f6553845cf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4f721abd794711b8582c330e2df4e93b30c3b82b810f61988018c508f99261f0
[INFO] running `Command { std: "docker" "start" "-a" "4f721abd794711b8582c330e2df4e93b30c3b82b810f61988018c508f99261f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling quickcheck v0.4.1
[INFO] [stderr]    Compiling unicode-reverse v1.0.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `Command { std: "docker" "inspect" "4f721abd794711b8582c330e2df4e93b30c3b82b810f61988018c508f99261f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f721abd794711b8582c330e2df4e93b30c3b82b810f61988018c508f99261f0", kill_on_drop: false }`
[INFO] [stdout] 4f721abd794711b8582c330e2df4e93b30c3b82b810f61988018c508f99261f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 1a6d7666d7c731e8f33a6006579094283f6481ffd484a4ef572d7e10af76aedf
[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" "1a6d7666d7c731e8f33a6006579094283f6481ffd484a4ef572d7e10af76aedf", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/unicode_reverse-da17048326f01a04
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_emoji ... ok
[INFO] [stdout] test tests::test_ascii ... ok
[INFO] [stdout] test tests::test_empty ... ok
[INFO] [stdout] test tests::test_combining_mark ... ok
[INFO] [stdout] test tests::test_utf8 ... ok
[INFO] [stderr]    Doc-tests unicode-reverse
[INFO] [stdout] test tests::quickchecks ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] test src/lib.rs - (line 35) ... ok
[INFO] [stdout] test src/lib.rs - reverse_grapheme_clusters_in_place (line 88) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.62s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1a6d7666d7c731e8f33a6006579094283f6481ffd484a4ef572d7e10af76aedf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a6d7666d7c731e8f33a6006579094283f6481ffd484a4ef572d7e10af76aedf", kill_on_drop: false }`
[INFO] [stdout] 1a6d7666d7c731e8f33a6006579094283f6481ffd484a4ef572d7e10af76aedf