[INFO] fetching crate scope_gc 0.2.6...
[INFO] testing scope_gc-0.2.6 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate scope_gc 0.2.6 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate scope_gc 0.2.6
[INFO] finished tweaking crates.io crate scope_gc 0.2.6
[INFO] tweaked toml for crates.io crate scope_gc 0.2.6 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate scope_gc 0.2.6 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f0129f35662cacdf439a9916fb3cc22dd5edf42c91129fbcf4ea5411cbfcbf0
[INFO] running `Command { std: "docker" "start" "-a" "5f0129f35662cacdf439a9916fb3cc22dd5edf42c91129fbcf4ea5411cbfcbf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f0129f35662cacdf439a9916fb3cc22dd5edf42c91129fbcf4ea5411cbfcbf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f0129f35662cacdf439a9916fb3cc22dd5edf42c91129fbcf4ea5411cbfcbf0", kill_on_drop: false }`
[INFO] [stdout] 5f0129f35662cacdf439a9916fb3cc22dd5edf42c91129fbcf4ea5411cbfcbf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc88f4d31cf1a0e9fe69f8debdef980d2dc2fbe2e086d814b9ea0fe53e9bad22
[INFO] running `Command { std: "docker" "start" "-a" "dc88f4d31cf1a0e9fe69f8debdef980d2dc2fbe2e086d814b9ea0fe53e9bad22", kill_on_drop: false }`
[INFO] [stderr]    Compiling scope_gc v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "dc88f4d31cf1a0e9fe69f8debdef980d2dc2fbe2e086d814b9ea0fe53e9bad22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc88f4d31cf1a0e9fe69f8debdef980d2dc2fbe2e086d814b9ea0fe53e9bad22", kill_on_drop: false }`
[INFO] [stdout] dc88f4d31cf1a0e9fe69f8debdef980d2dc2fbe2e086d814b9ea0fe53e9bad22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f66818833bac98acf1243de0b96a9f710a9d7d6f095af4d5e5b3070fdb4ff74e
[INFO] running `Command { std: "docker" "start" "-a" "f66818833bac98acf1243de0b96a9f710a9d7d6f095af4d5e5b3070fdb4ff74e", kill_on_drop: false }`
[INFO] [stderr]    Compiling scope_gc v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lib.rs:45:18
[INFO] [stdout]    |
[INFO] [stdout] 45 |     struct A<'n>(&'n i32);
[INFO] [stdout]    |            -     ^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inner` is never used
[INFO] [stdout]   --> src/lib.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |     trait NodeA<'gc>: NodeTrait<'gc> {
[INFO] [stdout]    |           ----- method in this trait
[INFO] [stdout] 55 |         fn inner(&self) -> &i32;
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "f66818833bac98acf1243de0b96a9f710a9d7d6f095af4d5e5b3070fdb4ff74e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f66818833bac98acf1243de0b96a9f710a9d7d6f095af4d5e5b3070fdb4ff74e", kill_on_drop: false }`
[INFO] [stdout] f66818833bac98acf1243de0b96a9f710a9d7d6f095af4d5e5b3070fdb4ff74e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2d45cc466c3f37c7ed26fd7b5daef9d193b4f52dd3e9ffddc8b5fd19bac9a65f
[INFO] running `Command { std: "docker" "start" "-a" "2d45cc466c3f37c7ed26fd7b5daef9d193b4f52dd3e9ffddc8b5fd19bac9a65f", kill_on_drop: false }`
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/lib.rs:45:18
[INFO] [stderr]    |
[INFO] [stderr] 45 |     struct A<'n>(&'n i32);
[INFO] [stderr]    |            -     ^^^^^^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            field in this struct
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing this field
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `inner` is never used
[INFO] [stderr]   --> src/lib.rs:55:12
[INFO] [stderr]    |
[INFO] [stderr] 54 |     trait NodeA<'gc>: NodeTrait<'gc> {
[INFO] [stderr]    |           ----- method in this trait
[INFO] [stderr] 55 |         fn inner(&self) -> &i32;
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `scope_gc` (lib test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/scope_gc-478c3abdda7612cc)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test ... ok
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests scope_gc
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.55s
[INFO] [stdout] 
[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" "2d45cc466c3f37c7ed26fd7b5daef9d193b4f52dd3e9ffddc8b5fd19bac9a65f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d45cc466c3f37c7ed26fd7b5daef9d193b4f52dd3e9ffddc8b5fd19bac9a65f", kill_on_drop: false }`
[INFO] [stdout] 2d45cc466c3f37c7ed26fd7b5daef9d193b4f52dd3e9ffddc8b5fd19bac9a65f