[INFO] fetching crate circbuf 0.2.0...
[INFO] testing circbuf-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate circbuf 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate circbuf 0.2.0 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 circbuf 0.2.0
[INFO] finished tweaking crates.io crate circbuf 0.2.0
[INFO] tweaked toml for crates.io crate circbuf 0.2.0 written to /workspace/builds/worker-0/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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 254a4428e808bd31d028f2204682bb80cb24b6cd39206bd469bca6252f1367b8
[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" "254a4428e808bd31d028f2204682bb80cb24b6cd39206bd469bca6252f1367b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "254a4428e808bd31d028f2204682bb80cb24b6cd39206bd469bca6252f1367b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "254a4428e808bd31d028f2204682bb80cb24b6cd39206bd469bca6252f1367b8", kill_on_drop: false }`
[INFO] [stdout] 254a4428e808bd31d028f2204682bb80cb24b6cd39206bd469bca6252f1367b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 98ba264e68ebe32d01bf15c97dcb674e9786ee264c40bd23cad7456179fe29f4
[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" "98ba264e68ebe32d01bf15c97dcb674e9786ee264c40bd23cad7456179fe29f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling circbuf v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "98ba264e68ebe32d01bf15c97dcb674e9786ee264c40bd23cad7456179fe29f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98ba264e68ebe32d01bf15c97dcb674e9786ee264c40bd23cad7456179fe29f4", kill_on_drop: false }`
[INFO] [stdout] 98ba264e68ebe32d01bf15c97dcb674e9786ee264c40bd23cad7456179fe29f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] f16b3db631994aa5ca86d603c0682a8eb90a58a7a20252405c17e887649f91ab
[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" "f16b3db631994aa5ca86d603c0682a8eb90a58a7a20252405c17e887649f91ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling vecio v0.1.0
[INFO] [stderr]    Compiling circbuf v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "f16b3db631994aa5ca86d603c0682a8eb90a58a7a20252405c17e887649f91ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f16b3db631994aa5ca86d603c0682a8eb90a58a7a20252405c17e887649f91ab", kill_on_drop: false }`
[INFO] [stdout] f16b3db631994aa5ca86d603c0682a8eb90a58a7a20252405c17e887649f91ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 4db3e5f21281cf20be708093e07506730bbc8bae771180605248dce30b55d41b
[INFO] running `Command { std: "docker" "start" "-a" "4db3e5f21281cf20be708093e07506730bbc8bae771180605248dce30b55d41b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/circbuf-c8c9ac2dcd5ad1ab)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test tests::create_circbuf ... ok
[INFO] [stdout] test tests::create_circbuf_with_capacity ... ok
[INFO] [stdout] test tests::find_bytes ... ok
[INFO] [stdout] test tests::get_bytes_and_avail ... ok
[INFO] [stdout] test tests::grow_buffer ... ok
[INFO] [stdout] test tests::put_peek_and_get_bytes ... ok
[INFO] [stdout] test tests::read_and_write_bytes ... ok
[INFO] [stdout] test tests::vecio ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests circbuf
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 40) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4db3e5f21281cf20be708093e07506730bbc8bae771180605248dce30b55d41b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4db3e5f21281cf20be708093e07506730bbc8bae771180605248dce30b55d41b", kill_on_drop: false }`
[INFO] [stdout] 4db3e5f21281cf20be708093e07506730bbc8bae771180605248dce30b55d41b