[INFO] fetching crate perm 0.7.0...
[INFO] testing perm-0.7.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate perm 0.7.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate perm 0.7.0 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 perm 0.7.0
[INFO] finished tweaking crates.io crate perm 0.7.0
[INFO] tweaked toml for crates.io crate perm 0.7.0 written to /workspace/builds/worker-14/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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] b750008c41ec1597fb7f1354461ff2889aa2fb9064c7002ae0450839880d47a2
[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" "b750008c41ec1597fb7f1354461ff2889aa2fb9064c7002ae0450839880d47a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b750008c41ec1597fb7f1354461ff2889aa2fb9064c7002ae0450839880d47a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b750008c41ec1597fb7f1354461ff2889aa2fb9064c7002ae0450839880d47a2", kill_on_drop: false }`
[INFO] [stdout] b750008c41ec1597fb7f1354461ff2889aa2fb9064c7002ae0450839880d47a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 620af157e03ac94d050aba9ddd72932d30e3152c2d714835dcbc3a4cf21984dc
[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" "620af157e03ac94d050aba9ddd72932d30e3152c2d714835dcbc3a4cf21984dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling perm v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/error.rs:29:26
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub (crate) const fn new(line: u32, module_path: &'static str, msg: Option<Cow<'static, str>>) -> 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 0.91s
[INFO] running `Command { std: "docker" "inspect" "620af157e03ac94d050aba9ddd72932d30e3152c2d714835dcbc3a4cf21984dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "620af157e03ac94d050aba9ddd72932d30e3152c2d714835dcbc3a4cf21984dc", kill_on_drop: false }`
[INFO] [stdout] 620af157e03ac94d050aba9ddd72932d30e3152c2d714835dcbc3a4cf21984dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 48dd794d42f6db3572b2b59537ec88ddf8ce22af1a67bed6063875f6eb98d6d8
[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" "48dd794d42f6db3572b2b59537ec88ddf8ce22af1a67bed6063875f6eb98d6d8", kill_on_drop: false }`
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/error.rs:29:26
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub (crate) const fn new(line: u32, module_path: &'static str, msg: Option<Cow<'static, str>>) -> Self {
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling perm v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/error.rs:29:26
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub (crate) const fn new(line: u32, module_path: &'static str, msg: Option<Cow<'static, str>>) -> 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 1.37s
[INFO] running `Command { std: "docker" "inspect" "48dd794d42f6db3572b2b59537ec88ddf8ce22af1a67bed6063875f6eb98d6d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48dd794d42f6db3572b2b59537ec88ddf8ce22af1a67bed6063875f6eb98d6d8", kill_on_drop: false }`
[INFO] [stdout] 48dd794d42f6db3572b2b59537ec88ddf8ce22af1a67bed6063875f6eb98d6d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 7df42eae0e520e7ee3e9590f0b66e8c238e469ec0248f77135f8019e84730b8a
[INFO] running `Command { std: "docker" "start" "-a" "7df42eae0e520e7ee3e9590f0b66e8c238e469ec0248f77135f8019e84730b8a", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/error.rs:29:26
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub (crate) const fn new(line: u32, module_path: &'static str, msg: Option<Cow<'static, str>>) -> Self {
[INFO] [stderr]    |                          ^^^
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] running 2 tests
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `perm` (lib) generated 1 warning
[INFO] [stderr] warning: `perm` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/perm-ebec92d89e34fa3a)
[INFO] [stdout] test test_crate_version ... ok
[INFO] [stderr]      Running tests/perm_iter.rs (/opt/rustwide/target/debug/deps/perm_iter-d3c32504d6901209)
[INFO] [stdout] test counter::test_counter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.18s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test perm_iters ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests perm
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/perm_iter.rs - perm_iter::PermIter (line 57) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.79s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7df42eae0e520e7ee3e9590f0b66e8c238e469ec0248f77135f8019e84730b8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7df42eae0e520e7ee3e9590f0b66e8c238e469ec0248f77135f8019e84730b8a", kill_on_drop: false }`
[INFO] [stdout] 7df42eae0e520e7ee3e9590f0b66e8c238e469ec0248f77135f8019e84730b8a