[INFO] fetching crate serbuffer 1.3.3...
[INFO] testing serbuffer-1.3.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate serbuffer 1.3.3 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate serbuffer 1.3.3 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 serbuffer 1.3.3
[INFO] finished tweaking crates.io crate serbuffer 1.3.3
[INFO] tweaked toml for crates.io crate serbuffer 1.3.3 written to /workspace/builds/worker-16/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-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 391536a2b51454a7aca91e29d98cb7775bac0ee73d05ecfb51c2d65787809365
[INFO] running `Command { std: "docker" "start" "-a" "391536a2b51454a7aca91e29d98cb7775bac0ee73d05ecfb51c2d65787809365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "391536a2b51454a7aca91e29d98cb7775bac0ee73d05ecfb51c2d65787809365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "391536a2b51454a7aca91e29d98cb7775bac0ee73d05ecfb51c2d65787809365", kill_on_drop: false }`
[INFO] [stdout] 391536a2b51454a7aca91e29d98cb7775bac0ee73d05ecfb51c2d65787809365
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 184ff8ee35d3f0797d63a00f88ac6bb88f96bc12af9cef14ad1b0daac63c234d
[INFO] running `Command { std: "docker" "start" "-a" "184ff8ee35d3f0797d63a00f88ac6bb88f96bc12af9cef14ad1b0daac63c234d", kill_on_drop: false }`
[INFO] [stderr]    Compiling serbuffer v1.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "184ff8ee35d3f0797d63a00f88ac6bb88f96bc12af9cef14ad1b0daac63c234d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "184ff8ee35d3f0797d63a00f88ac6bb88f96bc12af9cef14ad1b0daac63c234d", kill_on_drop: false }`
[INFO] [stdout] 184ff8ee35d3f0797d63a00f88ac6bb88f96bc12af9cef14ad1b0daac63c234d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 9dc78315d5b9b5ac2e371e54464924e870348750ad5560aca1fc78e2b065284e
[INFO] running `Command { std: "docker" "start" "-a" "9dc78315d5b9b5ac2e371e54464924e870348750ad5560aca1fc78e2b065284e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling serbuffer v1.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 57.95s
[INFO] running `Command { std: "docker" "inspect" "9dc78315d5b9b5ac2e371e54464924e870348750ad5560aca1fc78e2b065284e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dc78315d5b9b5ac2e371e54464924e870348750ad5560aca1fc78e2b065284e", kill_on_drop: false }`
[INFO] [stdout] 9dc78315d5b9b5ac2e371e54464924e870348750ad5560aca1fc78e2b065284e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] ca0c42f18c10fe9b42c02e47d129b5e3f2f5210630659af573441f6499f3c27d
[INFO] running `Command { std: "docker" "start" "-a" "ca0c42f18c10fe9b42c02e47d129b5e3f2f5210630659af573441f6499f3c27d", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] running 3 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serbuffer-608648ee9072735c)
[INFO] [stdout] test encoding::length_encoded_integer::tests::lenenc_int_0_test ... ok
[INFO] [stdout] test tests::buffer_test ... ok
[INFO] [stdout] test tests::buf_extend_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serbuffer
[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] running `Command { std: "docker" "inspect" "ca0c42f18c10fe9b42c02e47d129b5e3f2f5210630659af573441f6499f3c27d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca0c42f18c10fe9b42c02e47d129b5e3f2f5210630659af573441f6499f3c27d", kill_on_drop: false }`
[INFO] [stdout] ca0c42f18c10fe9b42c02e47d129b5e3f2f5210630659af573441f6499f3c27d