[INFO] fetching crate lkrust 0.1.2...
[INFO] testing lkrust-0.1.2 against 1.90.0 for beta-1.91-3
[INFO] extracting crate lkrust 0.1.2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate lkrust 0.1.2
[INFO] finished tweaking crates.io crate lkrust 0.1.2
[INFO] tweaked toml for crates.io crate lkrust 0.1.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lkrust 0.1.2 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] crate crates.io crate lkrust 0.1.2 already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e9f917007b352842e524fbe109f5c32ce207d20a19e0d35c56aad9aa7bb66dcf
[INFO] running `Command { std: "docker" "start" "-a" "e9f917007b352842e524fbe109f5c32ce207d20a19e0d35c56aad9aa7bb66dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9f917007b352842e524fbe109f5c32ce207d20a19e0d35c56aad9aa7bb66dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9f917007b352842e524fbe109f5c32ce207d20a19e0d35c56aad9aa7bb66dcf", kill_on_drop: false }`
[INFO] [stdout] e9f917007b352842e524fbe109f5c32ce207d20a19e0d35c56aad9aa7bb66dcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 6283187edb862dcb1b71dc0eae75d5a8b5771622fef2c828c6c1258f1fb16c11
[INFO] running `Command { std: "docker" "start" "-a" "6283187edb862dcb1b71dc0eae75d5a8b5771622fef2c828c6c1258f1fb16c11", kill_on_drop: false }`
[INFO] [stderr]    Compiling lkrust v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/lib.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "6283187edb862dcb1b71dc0eae75d5a8b5771622fef2c828c6c1258f1fb16c11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6283187edb862dcb1b71dc0eae75d5a8b5771622fef2c828c6c1258f1fb16c11", kill_on_drop: false }`
[INFO] [stdout] 6283187edb862dcb1b71dc0eae75d5a8b5771622fef2c828c6c1258f1fb16c11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8c02980e3abe2e8452110172ec8956a51abb63a410d1ddad68570f719c66013d
[INFO] running `Command { std: "docker" "start" "-a" "8c02980e3abe2e8452110172ec8956a51abb63a410d1ddad68570f719c66013d", kill_on_drop: false }`
[INFO] [stderr]    Compiling lkrust v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/lib.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "8c02980e3abe2e8452110172ec8956a51abb63a410d1ddad68570f719c66013d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c02980e3abe2e8452110172ec8956a51abb63a410d1ddad68570f719c66013d", kill_on_drop: false }`
[INFO] [stdout] 8c02980e3abe2e8452110172ec8956a51abb63a410d1ddad68570f719c66013d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 41d178e0461a9473b0570e808678d90da08bfb7f2bb14da431b608788afab53c
[INFO] running `Command { std: "docker" "start" "-a" "41d178e0461a9473b0570e808678d90da08bfb7f2bb14da431b608788afab53c", kill_on_drop: false }`
[INFO] [stderr] warning: function `main` is never used
[INFO] [stdout] 
[INFO] [stderr]   --> src/lib.rs:18:4
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 18 | fn main() {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |    ^^^^
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] running 1 test
[INFO] [stderr] 
[INFO] [stdout] test math_works ... ok
[INFO] [stderr] warning: `lkrust` (lib) generated 1 warning
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lkrust-f20d513106b6d975)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/efern.rs (/opt/rustwide/target/debug/deps/efern-b64b46b9086f05dc)
[INFO] [stderr]    Doc-tests lkrust
[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" "41d178e0461a9473b0570e808678d90da08bfb7f2bb14da431b608788afab53c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41d178e0461a9473b0570e808678d90da08bfb7f2bb14da431b608788afab53c", kill_on_drop: false }`
[INFO] [stdout] 41d178e0461a9473b0570e808678d90da08bfb7f2bb14da431b608788afab53c