[INFO] fetching crate ccache 0.1.0...
[INFO] testing ccache-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ccache 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate ccache 0.1.0 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 ccache 0.1.0
[INFO] finished tweaking crates.io crate ccache 0.1.0
[INFO] tweaked toml for crates.io crate ccache 0.1.0 written to /workspace/builds/worker-12/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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 8e27aec65f78bfb767f66d1be3fc5d62d43388333781ddc151966e43cff022b3
[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" "8e27aec65f78bfb767f66d1be3fc5d62d43388333781ddc151966e43cff022b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e27aec65f78bfb767f66d1be3fc5d62d43388333781ddc151966e43cff022b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e27aec65f78bfb767f66d1be3fc5d62d43388333781ddc151966e43cff022b3", kill_on_drop: false }`
[INFO] [stdout] 8e27aec65f78bfb767f66d1be3fc5d62d43388333781ddc151966e43cff022b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9ed02846ba869a7633299f22dc2624e2bf3c04449a2f271f7e8c49e5064baba2
[INFO] running `Command { std: "docker" "start" "-a" "9ed02846ba869a7633299f22dc2624e2bf3c04449a2f271f7e8c49e5064baba2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling ccache v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `InsertResult`
[INFO] [stdout]   --> src/swtlfu/mod.rs:52:22
[INFO] [stdout]    |
[INFO] [stdout] 52 | use crate::results::{InsertResult, InsertResultShared};
[INFO] [stdout]    |                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` 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 9.40s
[INFO] running `Command { std: "docker" "inspect" "9ed02846ba869a7633299f22dc2624e2bf3c04449a2f271f7e8c49e5064baba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ed02846ba869a7633299f22dc2624e2bf3c04449a2f271f7e8c49e5064baba2", kill_on_drop: false }`
[INFO] [stdout] 9ed02846ba869a7633299f22dc2624e2bf3c04449a2f271f7e8c49e5064baba2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5c1eeaec1b334fec441c2b6c9aed717ab22c56df17687ed9db99248d31f79d0a
[INFO] running `Command { std: "docker" "start" "-a" "5c1eeaec1b334fec441c2b6c9aed717ab22c56df17687ed9db99248d31f79d0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ccache v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `InsertResult`
[INFO] [stdout]   --> src/swtlfu/mod.rs:52:22
[INFO] [stdout]    |
[INFO] [stdout] 52 | use crate::results::{InsertResult, InsertResultShared};
[INFO] [stdout]    |                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `InsertResult`
[INFO] [stdout]   --> src/swtlfu/mod.rs:52:22
[INFO] [stdout]    |
[INFO] [stdout] 52 | use crate::results::{InsertResult, InsertResultShared};
[INFO] [stdout]    |                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` 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 1.19s
[INFO] running `Command { std: "docker" "inspect" "5c1eeaec1b334fec441c2b6c9aed717ab22c56df17687ed9db99248d31f79d0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c1eeaec1b334fec441c2b6c9aed717ab22c56df17687ed9db99248d31f79d0a", kill_on_drop: false }`
[INFO] [stdout] 5c1eeaec1b334fec441c2b6c9aed717ab22c56df17687ed9db99248d31f79d0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 011137a6d281869efedbef56a03bb8b8fff5bc1b60fc3143ac15f003d4c49334
[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" "011137a6d281869efedbef56a03bb8b8fff5bc1b60fc3143ac15f003d4c49334", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `InsertResult`
[INFO] [stderr]   --> src/swtlfu/mod.rs:52:22
[INFO] [stderr]    |
[INFO] [stderr] 52 | use crate::results::{InsertResult, InsertResultShared};
[INFO] [stderr]    |                      ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ccache` (lib) generated 1 warning
[INFO] [stderr] warning: `ccache` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ccache-a31f49e16bcd0878)
[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 ccache
[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" "011137a6d281869efedbef56a03bb8b8fff5bc1b60fc3143ac15f003d4c49334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "011137a6d281869efedbef56a03bb8b8fff5bc1b60fc3143ac15f003d4c49334", kill_on_drop: false }`
[INFO] [stdout] 011137a6d281869efedbef56a03bb8b8fff5bc1b60fc3143ac15f003d4c49334