[INFO] fetching crate test_pairs 0.1.0...
[INFO] testing test_pairs-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate test_pairs 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate test_pairs 0.1.0
[INFO] finished tweaking crates.io crate test_pairs 0.1.0
[INFO] tweaked toml for crates.io crate test_pairs 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate test_pairs 0.1.0 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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e64fc225df1f7cf9b5723f5a0c8b2d427f3c4d53adf55aa2a7cf4c1dfe493d8b
[INFO] running `Command { std: "docker" "start" "-a" "e64fc225df1f7cf9b5723f5a0c8b2d427f3c4d53adf55aa2a7cf4c1dfe493d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e64fc225df1f7cf9b5723f5a0c8b2d427f3c4d53adf55aa2a7cf4c1dfe493d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e64fc225df1f7cf9b5723f5a0c8b2d427f3c4d53adf55aa2a7cf4c1dfe493d8b", kill_on_drop: false }`
[INFO] [stdout] e64fc225df1f7cf9b5723f5a0c8b2d427f3c4d53adf55aa2a7cf4c1dfe493d8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 22d58a5b9eecb51c73663868caa846dd350712b37e4851be68c2b5599a19156c
[INFO] running `Command { std: "docker" "start" "-a" "22d58a5b9eecb51c73663868caa846dd350712b37e4851be68c2b5599a19156c", kill_on_drop: false }`
[INFO] [stderr]    Compiling test_pairs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "22d58a5b9eecb51c73663868caa846dd350712b37e4851be68c2b5599a19156c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22d58a5b9eecb51c73663868caa846dd350712b37e4851be68c2b5599a19156c", kill_on_drop: false }`
[INFO] [stdout] 22d58a5b9eecb51c73663868caa846dd350712b37e4851be68c2b5599a19156c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c4c20945e51ce0275570a3ac1c68b28adba7fec4fa325d0961ec27d819238a5f
[INFO] running `Command { std: "docker" "start" "-a" "c4c20945e51ce0275570a3ac1c68b28adba7fec4fa325d0961ec27d819238a5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling test_pairs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/lib.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |         test_pairs(&pairs, |a, b| a + 1, |b, a| b - 1);
[INFO] [stdout]    |                                ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/lib.rs:23:46
[INFO] [stdout]    |
[INFO] [stdout] 23 |         test_pairs(&pairs, |a, b| a + 1, |b, a| b - 1);
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "c4c20945e51ce0275570a3ac1c68b28adba7fec4fa325d0961ec27d819238a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4c20945e51ce0275570a3ac1c68b28adba7fec4fa325d0961ec27d819238a5f", kill_on_drop: false }`
[INFO] [stdout] c4c20945e51ce0275570a3ac1c68b28adba7fec4fa325d0961ec27d819238a5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ee70848ca49d1cd645fbb4dd2c4d71363f9f13a3af558d42a8528995a303503c
[INFO] running `Command { std: "docker" "start" "-a" "ee70848ca49d1cd645fbb4dd2c4d71363f9f13a3af558d42a8528995a303503c", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/lib.rs:23:32
[INFO] [stderr]    |
[INFO] [stderr] 23 |         test_pairs(&pairs, |a, b| a + 1, |b, a| b - 1);
[INFO] [stderr]    |                                ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/lib.rs:23:46
[INFO] [stderr]    |
[INFO] [stderr] 23 |         test_pairs(&pairs, |a, b| a + 1, |b, a| b - 1);
[INFO] [stderr]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: `test_pairs` (lib test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/test_pairs-5bc21e4688a70450)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::adding ... 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 test_pairs
[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" "ee70848ca49d1cd645fbb4dd2c4d71363f9f13a3af558d42a8528995a303503c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee70848ca49d1cd645fbb4dd2c4d71363f9f13a3af558d42a8528995a303503c", kill_on_drop: false }`
[INFO] [stdout] ee70848ca49d1cd645fbb4dd2c4d71363f9f13a3af558d42a8528995a303503c