[INFO] updating cached repository https://github.com/quadruple-output/rustc_dead_code_bug
[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] 91320aa2e04c4ced1d76c20e15f99e58d6274457
[INFO] testing quadruple-output/rustc_dead_code_bug against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquadruple-output%2Frustc_dead_code_bug" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quadruple-output/rustc_dead_code_bug 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/quadruple-output/rustc_dead_code_bug
[INFO] finished tweaking git repo https://github.com/quadruple-output/rustc_dead_code_bug
[INFO] tweaked toml for git repo https://github.com/quadruple-output/rustc_dead_code_bug written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/quadruple-output/rustc_dead_code_bug 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] f8fde5b392c82befb98d0c98e97e2d0bef50519b278f805890863fab5d56f04e
[INFO] running `"docker" "start" "-a" "f8fde5b392c82befb98d0c98e97e2d0bef50519b278f805890863fab5d56f04e"`
[INFO] [stderr]    Compiling rustc_dead_code_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `A2`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     A2 { a: i8 }, // <-- rustc complains that "variant is never constructed: `A2`"
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "f8fde5b392c82befb98d0c98e97e2d0bef50519b278f805890863fab5d56f04e"`
[INFO] running `"docker" "rm" "-f" "f8fde5b392c82befb98d0c98e97e2d0bef50519b278f805890863fab5d56f04e"`
[INFO] [stdout] f8fde5b392c82befb98d0c98e97e2d0bef50519b278f805890863fab5d56f04e
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] c94ab3050e62373d540fb6cfde158c4d7da34ca981251c75e555eb1928d4e2e6
[INFO] running `"docker" "start" "-a" "c94ab3050e62373d540fb6cfde158c4d7da34ca981251c75e555eb1928d4e2e6"`
[INFO] [stderr]    Compiling rustc_dead_code_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `A2`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     A2 { a: i8 }, // <-- rustc complains that "variant is never constructed: `A2`"
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "c94ab3050e62373d540fb6cfde158c4d7da34ca981251c75e555eb1928d4e2e6"`
[INFO] running `"docker" "rm" "-f" "c94ab3050e62373d540fb6cfde158c4d7da34ca981251c75e555eb1928d4e2e6"`
[INFO] [stdout] c94ab3050e62373d540fb6cfde158c4d7da34ca981251c75e555eb1928d4e2e6
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] e5b5485dbf3b68d3e88dad2596e199e4e60f3826aa3e0596cbfc5dabd687bc0e
[INFO] running `"docker" "start" "-a" "e5b5485dbf3b68d3e88dad2596e199e4e60f3826aa3e0596cbfc5dabd687bc0e"`
[INFO] [stderr] warning: variant is never constructed: `A2`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     A2 { a: i8 }, // <-- rustc complains that "variant is never constructed: `A2`"
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rustc_dead_code_bug-429b3fe3f90356ec
[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" "e5b5485dbf3b68d3e88dad2596e199e4e60f3826aa3e0596cbfc5dabd687bc0e"`
[INFO] running `"docker" "rm" "-f" "e5b5485dbf3b68d3e88dad2596e199e4e60f3826aa3e0596cbfc5dabd687bc0e"`
[INFO] [stdout] e5b5485dbf3b68d3e88dad2596e199e4e60f3826aa3e0596cbfc5dabd687bc0e