[INFO] fetching crate menmos-betterstreams 0.0.8...
[INFO] testing menmos-betterstreams-0.0.8 against 1.55.0 for beta-1.56-1
[INFO] extracting crate menmos-betterstreams 0.0.8 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate menmos-betterstreams 0.0.8 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 menmos-betterstreams 0.0.8
[INFO] finished tweaking crates.io crate menmos-betterstreams 0.0.8
[INFO] tweaked toml for crates.io crate menmos-betterstreams 0.0.8 written to /workspace/builds/worker-11/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 88f7dcc610cfa6fdf9295f86ea87e2f6f70ac88043849e2f84f9b6d58a06214c
[INFO] running `Command { std: "docker" "start" "-a" "88f7dcc610cfa6fdf9295f86ea87e2f6f70ac88043849e2f84f9b6d58a06214c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88f7dcc610cfa6fdf9295f86ea87e2f6f70ac88043849e2f84f9b6d58a06214c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88f7dcc610cfa6fdf9295f86ea87e2f6f70ac88043849e2f84f9b6d58a06214c", kill_on_drop: false }`
[INFO] [stdout] 88f7dcc610cfa6fdf9295f86ea87e2f6f70ac88043849e2f84f9b6d58a06214c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 4fa74b79849ae629fada21a387c6dd23f682e37df2f5b068b8c7022d27c42877
[INFO] running `Command { std: "docker" "start" "-a" "4fa74b79849ae629fada21a387c6dd23f682e37df2f5b068b8c7022d27c42877", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling tokio-util v0.6.8
[INFO] [stderr]    Compiling menmos-betterstreams v0.0.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "4fa74b79849ae629fada21a387c6dd23f682e37df2f5b068b8c7022d27c42877", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fa74b79849ae629fada21a387c6dd23f682e37df2f5b068b8c7022d27c42877", kill_on_drop: false }`
[INFO] [stdout] 4fa74b79849ae629fada21a387c6dd23f682e37df2f5b068b8c7022d27c42877
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 81acd90c78892fb2455356296ea37ffbf0f17ba1f191d185df21e588db9449fb
[INFO] running `Command { std: "docker" "start" "-a" "81acd90c78892fb2455356296ea37ffbf0f17ba1f191d185df21e588db9449fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling menmos-betterstreams v0.0.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "81acd90c78892fb2455356296ea37ffbf0f17ba1f191d185df21e588db9449fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81acd90c78892fb2455356296ea37ffbf0f17ba1f191d185df21e588db9449fb", kill_on_drop: false }`
[INFO] [stdout] 81acd90c78892fb2455356296ea37ffbf0f17ba1f191d185df21e588db9449fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stdout] 77a32c470489dfa05c9011d83805290e9e7825e2744d41ce0c2619d3eb00824d
[INFO] running `Command { std: "docker" "start" "-a" "77a32c470489dfa05c9011d83805290e9e7825e2744d41ce0c2619d3eb00824d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/betterstreams-0ecff9db657081df)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests betterstreams
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/fs.rs - fs::write_all (line 25) - compile ... ok
[INFO] [stdout] test src/fs.rs - fs::read_range (line 81) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.45s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "77a32c470489dfa05c9011d83805290e9e7825e2744d41ce0c2619d3eb00824d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77a32c470489dfa05c9011d83805290e9e7825e2744d41ce0c2619d3eb00824d", kill_on_drop: false }`
[INFO] [stdout] 77a32c470489dfa05c9011d83805290e9e7825e2744d41ce0c2619d3eb00824d