[INFO] fetching crate safe-lock 0.1.4...
[INFO] testing safe-lock-0.1.4 against 1.90.0 for beta-1.91-3
[INFO] extracting crate safe-lock 0.1.4 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate safe-lock 0.1.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate safe-lock 0.1.4
[INFO] tweaked toml for crates.io crate safe-lock 0.1.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate safe-lock 0.1.4 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ec0a542bf91be5d8390164398f6c17d8c2a43bf53db528ec799fc0e9535f0c5
[INFO] running `Command { std: "docker" "start" "-a" "7ec0a542bf91be5d8390164398f6c17d8c2a43bf53db528ec799fc0e9535f0c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ec0a542bf91be5d8390164398f6c17d8c2a43bf53db528ec799fc0e9535f0c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ec0a542bf91be5d8390164398f6c17d8c2a43bf53db528ec799fc0e9535f0c5", kill_on_drop: false }`
[INFO] [stdout] 7ec0a542bf91be5d8390164398f6c17d8c2a43bf53db528ec799fc0e9535f0c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80bc4ece337589d1c119a4b53519806571a2aa4582340cefc2d2901aac051371
[INFO] running `Command { std: "docker" "start" "-a" "80bc4ece337589d1c119a4b53519806571a2aa4582340cefc2d2901aac051371", kill_on_drop: false }`
[INFO] [stderr]    Compiling safe-lock v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:154:17
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub fn lock(&self) -> Option<SafeLockGuard> {
[INFO] [stdout]     |                 ^^^^^            ------------- the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub fn lock(&self) -> Option<SafeLockGuard<'_>> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "80bc4ece337589d1c119a4b53519806571a2aa4582340cefc2d2901aac051371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80bc4ece337589d1c119a4b53519806571a2aa4582340cefc2d2901aac051371", kill_on_drop: false }`
[INFO] [stdout] 80bc4ece337589d1c119a4b53519806571a2aa4582340cefc2d2901aac051371
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9078c269d6a31dd9cf604020d976ad3592c4e9bf71ad6bf52d1aadf015d3ff7d
[INFO] running `Command { std: "docker" "start" "-a" "9078c269d6a31dd9cf604020d976ad3592c4e9bf71ad6bf52d1aadf015d3ff7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling safe-lock v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:154:17
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub fn lock(&self) -> Option<SafeLockGuard> {
[INFO] [stdout]     |                 ^^^^^            ------------- the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub fn lock(&self) -> Option<SafeLockGuard<'_>> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:154:17
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub fn lock(&self) -> Option<SafeLockGuard> {
[INFO] [stdout]     |                 ^^^^^            ------------- the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub fn lock(&self) -> Option<SafeLockGuard<'_>> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "9078c269d6a31dd9cf604020d976ad3592c4e9bf71ad6bf52d1aadf015d3ff7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9078c269d6a31dd9cf604020d976ad3592c4e9bf71ad6bf52d1aadf015d3ff7d", kill_on_drop: false }`
[INFO] [stdout] 9078c269d6a31dd9cf604020d976ad3592c4e9bf71ad6bf52d1aadf015d3ff7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6c0493fa45c682e99edcf8d542661d7f6ff32afffef7e91b4e4fd14e6a1019af
[INFO] running `Command { std: "docker" "start" "-a" "6c0493fa45c682e99edcf8d542661d7f6ff32afffef7e91b4e4fd14e6a1019af", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:154:17
[INFO] [stderr]     |
[INFO] [stderr] 154 |     pub fn lock(&self) -> Option<SafeLockGuard> {
[INFO] [stderr]     |                 ^^^^^            ------------- the same lifetime is hidden here
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 154 |     pub fn lock(&self) -> Option<SafeLockGuard<'_>> {
[INFO] [stderr]     |                                               ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `safe-lock` (lib) generated 1 warning
[INFO] [stderr] warning: `safe-lock` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/safe_lock-9e7c4de9340b8456)
[INFO] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-174088b67766723e)
[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] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test sequential ... ok
[INFO] [stdout] test default ... ok
[INFO] [stdout] test quick_unblock ... ok
[INFO] [stdout] test multiple_threads ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.12s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests safe_lock
[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" "6c0493fa45c682e99edcf8d542661d7f6ff32afffef7e91b4e4fd14e6a1019af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c0493fa45c682e99edcf8d542661d7f6ff32afffef7e91b4e4fd14e6a1019af", kill_on_drop: false }`
[INFO] [stdout] 6c0493fa45c682e99edcf8d542661d7f6ff32afffef7e91b4e4fd14e6a1019af