[INFO] fetching crate koi-gc 0.1.0... [INFO] testing koi-gc-0.1.0 against try#8da20828b6ea601dfd8e2448cb50ace88876bd78 for pr-150933 [INFO] extracting crate koi-gc 0.1.0 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate koi-gc 0.1.0 [INFO] finished tweaking crates.io crate koi-gc 0.1.0 [INFO] tweaked toml for crates.io crate koi-gc 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate koi-gc 0.1.0 on toolchain 8da20828b6ea601dfd8e2448cb50ace88876bd78 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate koi-gc 0.1.0 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" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1da915d8acc4d9c54876d235b155a933ce92c3ca4358ad5e3e5a0d1c69634342 [INFO] running `Command { std: "docker" "start" "-a" "1da915d8acc4d9c54876d235b155a933ce92c3ca4358ad5e3e5a0d1c69634342", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1da915d8acc4d9c54876d235b155a933ce92c3ca4358ad5e3e5a0d1c69634342", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1da915d8acc4d9c54876d235b155a933ce92c3ca4358ad5e3e5a0d1c69634342", kill_on_drop: false }` [INFO] [stdout] 1da915d8acc4d9c54876d235b155a933ce92c3ca4358ad5e3e5a0d1c69634342 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 06d8f6e0873871b6615ec1a8d5080fbdb9975643d5857afe87275d2c32cd9477 [INFO] running `Command { std: "docker" "start" "-a" "06d8f6e0873871b6615ec1a8d5080fbdb9975643d5857afe87275d2c32cd9477", kill_on_drop: false }` [INFO] [stderr] Compiling koi-gc v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s [INFO] running `Command { std: "docker" "inspect" "06d8f6e0873871b6615ec1a8d5080fbdb9975643d5857afe87275d2c32cd9477", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "06d8f6e0873871b6615ec1a8d5080fbdb9975643d5857afe87275d2c32cd9477", kill_on_drop: false }` [INFO] [stdout] 06d8f6e0873871b6615ec1a8d5080fbdb9975643d5857afe87275d2c32cd9477 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 420c555f41da6b03a2640b7686ad50d75823e25663bcba40182a285802b9e2e6 [INFO] running `Command { std: "docker" "start" "-a" "420c555f41da6b03a2640b7686ad50d75823e25663bcba40182a285802b9e2e6", kill_on_drop: false }` [INFO] [stderr] Compiling koi-gc v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/lib.rs:486:29 [INFO] [stdout] | [INFO] [stdout] 486 | fn visit(&self, visitor: &mut dyn FnMut(&dyn GcInterface)) {} [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `data` is never read [INFO] [stdout] --> src/lib.rs:440:9 [INFO] [stdout] | [INFO] [stdout] 438 | struct Leak { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 439 | cycle: RefCell>>>>, [INFO] [stdout] 440 | data: T, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.69s [INFO] running `Command { std: "docker" "inspect" "420c555f41da6b03a2640b7686ad50d75823e25663bcba40182a285802b9e2e6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "420c555f41da6b03a2640b7686ad50d75823e25663bcba40182a285802b9e2e6", kill_on_drop: false }` [INFO] [stdout] 420c555f41da6b03a2640b7686ad50d75823e25663bcba40182a285802b9e2e6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 306fe97c8bb48ee14441493e1fc3ea0d2418184dd6f591a4ecf7ed5640f5daa5 [INFO] running `Command { std: "docker" "start" "-a" "306fe97c8bb48ee14441493e1fc3ea0d2418184dd6f591a4ecf7ed5640f5daa5", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `visitor` [INFO] [stderr] --> src/lib.rs:486:29 [INFO] [stderr] | [INFO] [stderr] 486 | fn visit(&self, visitor: &mut dyn FnMut(&dyn GcInterface)) {} [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: field `data` is never read [INFO] [stderr] --> src/lib.rs:440:9 [INFO] [stderr] | [INFO] [stderr] 438 | struct Leak { [INFO] [stderr] | ---- field in this struct [INFO] [stderr] 439 | cycle: RefCell>>>>, [INFO] [stderr] 440 | data: T, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `koi-gc` (lib test) generated 2 warnings (run `cargo fix --lib -p koi-gc --tests` to apply 1 suggestion) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/koi_gc-eeaf49799adba8f7) [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stderr] error: test failed, to rerun pass `--lib` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/deps/koi_gc-eeaf49799adba8f7` (signal: 11, SIGSEGV: invalid memory reference) [INFO] running `Command { std: "docker" "inspect" "306fe97c8bb48ee14441493e1fc3ea0d2418184dd6f591a4ecf7ed5640f5daa5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "306fe97c8bb48ee14441493e1fc3ea0d2418184dd6f591a4ecf7ed5640f5daa5", kill_on_drop: false }` [INFO] [stdout] 306fe97c8bb48ee14441493e1fc3ea0d2418184dd6f591a4ecf7ed5640f5daa5