[INFO] updating cached repository https://github.com/luki/calc
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e94a9c6cdbcbee76e3fa3ec0df01c6336628f919
[INFO] testing luki/calc against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluki%2Fcalc" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luki/calc on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/luki/calc
[INFO] finished tweaking git repo https://github.com/luki/calc
[INFO] tweaked toml for git repo https://github.com/luki/calc written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/luki/calc already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e65a149028cc91e609202e7116a1859dc729b1065d5127c2619476634f462bc7
[INFO] running `"docker" "start" "-a" "e65a149028cc91e609202e7116a1859dc729b1065d5127c2619476634f462bc7"`
[INFO] [stderr]    Compiling calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `calc`
[INFO] [stderr]  --> src/main.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let calc = Calc::new();
[INFO] [stderr]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_calc`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Add`
[INFO] [stderr]   --> src/operations.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Add,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Subtract`
[INFO] [stderr]   --> src/operations.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Subtract,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Multiply`
[INFO] [stderr]   --> src/operations.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Multiply,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Divide`
[INFO] [stderr]   --> src/operations.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Divide
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "e65a149028cc91e609202e7116a1859dc729b1065d5127c2619476634f462bc7"`
[INFO] running `"docker" "rm" "-f" "e65a149028cc91e609202e7116a1859dc729b1065d5127c2619476634f462bc7"`
[INFO] [stdout] e65a149028cc91e609202e7116a1859dc729b1065d5127c2619476634f462bc7
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 79531000db4e8e3fd851320c6b77bc57d3cfad0823b35e3b193620add7ca5542
[INFO] running `"docker" "start" "-a" "79531000db4e8e3fd851320c6b77bc57d3cfad0823b35e3b193620add7ca5542"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `calc`
[INFO] [stderr]  --> src/main.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let calc = Calc::new();
[INFO] [stderr]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_calc`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Add`
[INFO] [stderr]   --> src/operations.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Add,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Subtract`
[INFO] [stderr]   --> src/operations.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Subtract,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Multiply`
[INFO] [stderr]   --> src/operations.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Multiply,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Divide`
[INFO] [stderr]   --> src/operations.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Divide
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `"docker" "inspect" "79531000db4e8e3fd851320c6b77bc57d3cfad0823b35e3b193620add7ca5542"`
[INFO] running `"docker" "rm" "-f" "79531000db4e8e3fd851320c6b77bc57d3cfad0823b35e3b193620add7ca5542"`
[INFO] [stdout] 79531000db4e8e3fd851320c6b77bc57d3cfad0823b35e3b193620add7ca5542
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cfeb8700f8a9a4eb18dd5f5618275c9df009775b617668b3435863a3e9b4acad
[INFO] running `"docker" "start" "-a" "cfeb8700f8a9a4eb18dd5f5618275c9df009775b617668b3435863a3e9b4acad"`
[INFO] [stderr] warning: unused variable: `calc`
[INFO] [stderr]  --> src/main.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let calc = Calc::new();
[INFO] [stderr]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_calc`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Add`
[INFO] [stderr]   --> src/operations.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Add,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Subtract`
[INFO] [stderr]   --> src/operations.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Subtract,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Multiply`
[INFO] [stderr]   --> src/operations.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Multiply,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Divide`
[INFO] [stderr]   --> src/operations.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Divide
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/calc-fc2cc8021074f6a2
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "cfeb8700f8a9a4eb18dd5f5618275c9df009775b617668b3435863a3e9b4acad"`
[INFO] running `"docker" "rm" "-f" "cfeb8700f8a9a4eb18dd5f5618275c9df009775b617668b3435863a3e9b4acad"`
[INFO] [stdout] cfeb8700f8a9a4eb18dd5f5618275c9df009775b617668b3435863a3e9b4acad