[INFO] fetching crate gray-codes 0.1.1...
[INFO] testing gray-codes-0.1.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate gray-codes 0.1.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate gray-codes 0.1.1 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 gray-codes 0.1.1
[INFO] finished tweaking crates.io crate gray-codes 0.1.1
[INFO] tweaked toml for crates.io crate gray-codes 0.1.1 written to /workspace/builds/worker-3/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-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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 953d4d9441af3e4996246c716d0297f3aa627662dc94dda929706cc95bb9ba81
[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" "953d4d9441af3e4996246c716d0297f3aa627662dc94dda929706cc95bb9ba81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "953d4d9441af3e4996246c716d0297f3aa627662dc94dda929706cc95bb9ba81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "953d4d9441af3e4996246c716d0297f3aa627662dc94dda929706cc95bb9ba81", kill_on_drop: false }`
[INFO] [stdout] 953d4d9441af3e4996246c716d0297f3aa627662dc94dda929706cc95bb9ba81
[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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0906286c876f2b83a7b0d7b35cfe5de85a16ec85f8ddfb6673b4690fa3ba22b1
[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" "0906286c876f2b83a7b0d7b35cfe5de85a16ec85f8ddfb6673b4690fa3ba22b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling gray-codes v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "0906286c876f2b83a7b0d7b35cfe5de85a16ec85f8ddfb6673b4690fa3ba22b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0906286c876f2b83a7b0d7b35cfe5de85a16ec85f8ddfb6673b4690fa3ba22b1", kill_on_drop: false }`
[INFO] [stdout] 0906286c876f2b83a7b0d7b35cfe5de85a16ec85f8ddfb6673b4690fa3ba22b1
[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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e8b7e1e00283033e4040d57811831c056052c3cba5c0a7fc39576371314670f
[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" "3e8b7e1e00283033e4040d57811831c056052c3cba5c0a7fc39576371314670f", kill_on_drop: false }`
[INFO] [stderr]    Compiling gray-codes v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `Command { std: "docker" "inspect" "3e8b7e1e00283033e4040d57811831c056052c3cba5c0a7fc39576371314670f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e8b7e1e00283033e4040d57811831c056052c3cba5c0a7fc39576371314670f", kill_on_drop: false }`
[INFO] [stdout] 3e8b7e1e00283033e4040d57811831c056052c3cba5c0a7fc39576371314670f
[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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f1b5e86dc4abaf8dc5f5a8474206fdbd5f4dfe9b29c1582f2917bbda6621dcb3
[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" "f1b5e86dc4abaf8dc5f5a8474206fdbd5f4dfe9b29c1582f2917bbda6621dcb3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/gray_codes-77868fa81b24547d
[INFO] [stdout] running 6 tests
[INFO] [stdout] test gray_code_16 ... ok
[INFO] [stdout] test subsets ... ok
[INFO] [stdout] test gray_code_8 ... ok
[INFO] [stdout] test inclusion_exclusion ... ok
[INFO] [stdout] test gray_code_32 ... ok
[INFO] [stdout] test gray_code_64 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.52s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests gray-codes
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test src/lib.rs - GrayCode32 (line 252) ... ok
[INFO] [stdout] test src/lib.rs - InclusionExclusion (line 276) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode64 (line 229) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode8 (line 248) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode16 (line 225) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode16 (line 250) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode32 (line 227) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode8 (line 223) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode64 (line 254) ... ok
[INFO] [stdout] test src/lib.rs - InclusionExclusion (line 250) ... ok
[INFO] [stdout] test src/lib.rs - Subsets (line 420) ... ok
[INFO] [stdout] test src/lib.rs - Subsets (line 394) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.62s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f1b5e86dc4abaf8dc5f5a8474206fdbd5f4dfe9b29c1582f2917bbda6621dcb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b5e86dc4abaf8dc5f5a8474206fdbd5f4dfe9b29c1582f2917bbda6621dcb3", kill_on_drop: false }`
[INFO] [stdout] f1b5e86dc4abaf8dc5f5a8474206fdbd5f4dfe9b29c1582f2917bbda6621dcb3