[INFO] fetching crate scope_gc 0.2.6...
[INFO] testing scope_gc-0.2.6 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate scope_gc 0.2.6 into /workspace/builds/worker-0-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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate scope_gc 0.2.6 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36b741e3007b15ab0e68a14c42cf406dbc61923bc267fb763cad571ea4278e5c
[INFO] running `Command { std: "docker" "start" "-a" "36b741e3007b15ab0e68a14c42cf406dbc61923bc267fb763cad571ea4278e5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36b741e3007b15ab0e68a14c42cf406dbc61923bc267fb763cad571ea4278e5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36b741e3007b15ab0e68a14c42cf406dbc61923bc267fb763cad571ea4278e5c", kill_on_drop: false }`
[INFO] [stdout] 36b741e3007b15ab0e68a14c42cf406dbc61923bc267fb763cad571ea4278e5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4caadd9cdcf9300e1dc7a52a0ba3838461e824c2c857bddf66acefca5b97035a
[INFO] running `Command { std: "docker" "start" "-a" "4caadd9cdcf9300e1dc7a52a0ba3838461e824c2c857bddf66acefca5b97035a", 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 0.39s
[INFO] running `Command { std: "docker" "inspect" "4caadd9cdcf9300e1dc7a52a0ba3838461e824c2c857bddf66acefca5b97035a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4caadd9cdcf9300e1dc7a52a0ba3838461e824c2c857bddf66acefca5b97035a", kill_on_drop: false }`
[INFO] [stdout] 4caadd9cdcf9300e1dc7a52a0ba3838461e824c2c857bddf66acefca5b97035a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b979b78190f1fa4a57fe918c6ebb0f18db936703696f79ac2e5d901f1b3f3914
[INFO] running `Command { std: "docker" "start" "-a" "b979b78190f1fa4a57fe918c6ebb0f18db936703696f79ac2e5d901f1b3f3914", 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 0.59s
[INFO] running `Command { std: "docker" "inspect" "b979b78190f1fa4a57fe918c6ebb0f18db936703696f79ac2e5d901f1b3f3914", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b979b78190f1fa4a57fe918c6ebb0f18db936703696f79ac2e5d901f1b3f3914", kill_on_drop: false }`
[INFO] [stdout] b979b78190f1fa4a57fe918c6ebb0f18db936703696f79ac2e5d901f1b3f3914
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4ef43147a991388d7d4d4f478d80989e140836abe79fffa4d4f7de6b48ae3bac
[INFO] running `Command { std: "docker" "start" "-a" "4ef43147a991388d7d4d4f478d80989e140836abe79fffa4d4f7de6b48ae3bac", 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 0.05s
[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 3.83s
[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" "4ef43147a991388d7d4d4f478d80989e140836abe79fffa4d4f7de6b48ae3bac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ef43147a991388d7d4d4f478d80989e140836abe79fffa4d4f7de6b48ae3bac", kill_on_drop: false }`
[INFO] [stdout] 4ef43147a991388d7d4d4f478d80989e140836abe79fffa4d4f7de6b48ae3bac