[INFO] fetching crate pcompress 1.0.0...
[INFO] testing pcompress-1.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate pcompress 1.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate pcompress 1.0.0 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 pcompress 1.0.0
[INFO] finished tweaking crates.io crate pcompress 1.0.0
[INFO] tweaked toml for crates.io crate pcompress 1.0.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate pcompress 1.0.0 already has a lockfile, it will not be regenerated
[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] 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] f51c2366e19e3ecf7c7b9d199079e139a25fc9215d927dc13e40f9a9a5571561
[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" "f51c2366e19e3ecf7c7b9d199079e139a25fc9215d927dc13e40f9a9a5571561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f51c2366e19e3ecf7c7b9d199079e139a25fc9215d927dc13e40f9a9a5571561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f51c2366e19e3ecf7c7b9d199079e139a25fc9215d927dc13e40f9a9a5571561", kill_on_drop: false }`
[INFO] [stdout] f51c2366e19e3ecf7c7b9d199079e139a25fc9215d927dc13e40f9a9a5571561
[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] 7fc23cc652ea4a3e01944f155bd940bcd0508d03bbb687dfcb4249a09a2175e0
[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" "7fc23cc652ea4a3e01944f155bd940bcd0508d03bbb687dfcb4249a09a2175e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling structopt v0.3.22
[INFO] [stderr]    Compiling pcompress v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `with_capacity`
[INFO] [stdout]   --> src/diff.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn with_capacity(capacity: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.72s
[INFO] running `Command { std: "docker" "inspect" "7fc23cc652ea4a3e01944f155bd940bcd0508d03bbb687dfcb4249a09a2175e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fc23cc652ea4a3e01944f155bd940bcd0508d03bbb687dfcb4249a09a2175e0", kill_on_drop: false }`
[INFO] [stdout] 7fc23cc652ea4a3e01944f155bd940bcd0508d03bbb687dfcb4249a09a2175e0
[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] 4e8d8bf00f75d0a2177d4a2443b4f189f8accfeba34ff85952d16bc9ed66a688
[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" "4e8d8bf00f75d0a2177d4a2443b4f189f8accfeba34ff85952d16bc9ed66a688", kill_on_drop: false }`
[INFO] [stderr]    Compiling pcompress v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `with_capacity`
[INFO] [stdout]   --> src/diff.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn with_capacity(capacity: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "4e8d8bf00f75d0a2177d4a2443b4f189f8accfeba34ff85952d16bc9ed66a688", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e8d8bf00f75d0a2177d4a2443b4f189f8accfeba34ff85952d16bc9ed66a688", kill_on_drop: false }`
[INFO] [stdout] 4e8d8bf00f75d0a2177d4a2443b4f189f8accfeba34ff85952d16bc9ed66a688
[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] [stdout] fe34ecce43f9ef559e0d95e2c5f1c3762fc9575dd775cd0e98a6f5eb007c16a3
[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" "fe34ecce43f9ef559e0d95e2c5f1c3762fc9575dd775cd0e98a6f5eb007c16a3", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `with_capacity`
[INFO] [stderr]   --> src/diff.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn with_capacity(capacity: usize) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `pcompress` (bin "pcompress" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pcompress-5586446244c8d059)
[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" "fe34ecce43f9ef559e0d95e2c5f1c3762fc9575dd775cd0e98a6f5eb007c16a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe34ecce43f9ef559e0d95e2c5f1c3762fc9575dd775cd0e98a6f5eb007c16a3", kill_on_drop: false }`
[INFO] [stdout] fe34ecce43f9ef559e0d95e2c5f1c3762fc9575dd775cd0e98a6f5eb007c16a3