[INFO] cloning repository https://github.com/ZainlessBrombie/rs-safe-gc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZainlessBrombie/rs-safe-gc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZainlessBrombie%2Frs-safe-gc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZainlessBrombie%2Frs-safe-gc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e20adb3c5d8d1d3e0a8f23d52cae7411971293ac
[INFO] testing ZainlessBrombie/rs-safe-gc against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZainlessBrombie%2Frs-safe-gc" "/workspace/builds/worker-24/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-24/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZainlessBrombie/rs-safe-gc on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZainlessBrombie/rs-safe-gc
[INFO] finished tweaking git repo https://github.com/ZainlessBrombie/rs-safe-gc
[INFO] tweaked toml for git repo https://github.com/ZainlessBrombie/rs-safe-gc written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate git repo https://github.com/ZainlessBrombie/rs-safe-gc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5b2ce4d2dec77903fd2f49716f94de4683a140c7c0a2f7c0eb119730ed56a48
[INFO] running `Command { std: "docker" "start" "-a" "d5b2ce4d2dec77903fd2f49716f94de4683a140c7c0a2f7c0eb119730ed56a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5b2ce4d2dec77903fd2f49716f94de4683a140c7c0a2f7c0eb119730ed56a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5b2ce4d2dec77903fd2f49716f94de4683a140c7c0a2f7c0eb119730ed56a48", kill_on_drop: false }`
[INFO] [stdout] d5b2ce4d2dec77903fd2f49716f94de4683a140c7c0a2f7c0eb119730ed56a48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 971e9645d69b33c404958d99347d32c402ae2f3b6d0a387ff9eab87edb783353
[INFO] running `Command { std: "docker" "start" "-a" "971e9645d69b33c404958d99347d32c402ae2f3b6d0a387ff9eab87edb783353", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling safe_gc_derive v0.0.0 (/opt/rustwide/workdir/gc-macro)
[INFO] [stderr]    Compiling safe-gc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `into_inner`
[INFO] [stdout]    --> src/gc.rs:251:12
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn into_inner(self) -> T {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.09s
[INFO] running `Command { std: "docker" "inspect" "971e9645d69b33c404958d99347d32c402ae2f3b6d0a387ff9eab87edb783353", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "971e9645d69b33c404958d99347d32c402ae2f3b6d0a387ff9eab87edb783353", kill_on_drop: false }`
[INFO] [stdout] 971e9645d69b33c404958d99347d32c402ae2f3b6d0a387ff9eab87edb783353
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6a1be78e0385ff7b2904c67d8625331dd9daaf8e4508de2e91df13b87b58e86
[INFO] running `Command { std: "docker" "start" "-a" "f6a1be78e0385ff7b2904c67d8625331dd9daaf8e4508de2e91df13b87b58e86", kill_on_drop: false }`
[INFO] [stderr]    Compiling safe-gc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `into_inner`
[INFO] [stdout]    --> src/gc.rs:251:12
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn into_inner(self) -> T {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "f6a1be78e0385ff7b2904c67d8625331dd9daaf8e4508de2e91df13b87b58e86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6a1be78e0385ff7b2904c67d8625331dd9daaf8e4508de2e91df13b87b58e86", kill_on_drop: false }`
[INFO] [stdout] f6a1be78e0385ff7b2904c67d8625331dd9daaf8e4508de2e91df13b87b58e86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 85eba9bea50f66d5dd4d4534ebb067c8a948741cfdcb0aceb8fbc04d7e99fd61
[INFO] running `Command { std: "docker" "start" "-a" "85eba9bea50f66d5dd4d4534ebb067c8a948741cfdcb0aceb8fbc04d7e99fd61", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `into_inner`
[INFO] [stdout] 
[INFO] [stderr]    --> src/gc.rs:251:12
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 251 |     pub fn into_inner(self) -> T {
[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 0 tests
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: `safe-gc` (bin "safe-gc" test) generated 1 warning
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/safe_gc-2124fcb13b4aedd2)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/safe_gc-1cd8138e8c4d6667)
[INFO] [stderr]    Doc-tests safe_gc
[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" "85eba9bea50f66d5dd4d4534ebb067c8a948741cfdcb0aceb8fbc04d7e99fd61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85eba9bea50f66d5dd4d4534ebb067c8a948741cfdcb0aceb8fbc04d7e99fd61", kill_on_drop: false }`
[INFO] [stdout] 85eba9bea50f66d5dd4d4534ebb067c8a948741cfdcb0aceb8fbc04d7e99fd61