[INFO] fetching crate lfbs 0.1.0...
[INFO] testing lfbs-0.1.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate lfbs 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate lfbs 0.1.0
[INFO] finished tweaking crates.io crate lfbs 0.1.0
[INFO] tweaked toml for crates.io crate lfbs 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lfbs 0.1.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79ea35568a72c1772ebfb7aa610e26f68c325deb3977fc1c82c2ee4755c80db2
[INFO] running `Command { std: "docker" "start" "-a" "79ea35568a72c1772ebfb7aa610e26f68c325deb3977fc1c82c2ee4755c80db2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79ea35568a72c1772ebfb7aa610e26f68c325deb3977fc1c82c2ee4755c80db2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79ea35568a72c1772ebfb7aa610e26f68c325deb3977fc1c82c2ee4755c80db2", kill_on_drop: false }`
[INFO] [stdout] 79ea35568a72c1772ebfb7aa610e26f68c325deb3977fc1c82c2ee4755c80db2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b5d3b0f8a1b525cafbc18bdb9abdd074d175f15d402580c4ea0ae0f409e3137
[INFO] running `Command { std: "docker" "start" "-a" "7b5d3b0f8a1b525cafbc18bdb9abdd074d175f15d402580c4ea0ae0f409e3137", kill_on_drop: false }`
[INFO] [stderr]    Compiling lfbs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "7b5d3b0f8a1b525cafbc18bdb9abdd074d175f15d402580c4ea0ae0f409e3137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b5d3b0f8a1b525cafbc18bdb9abdd074d175f15d402580c4ea0ae0f409e3137", kill_on_drop: false }`
[INFO] [stdout] 7b5d3b0f8a1b525cafbc18bdb9abdd074d175f15d402580c4ea0ae0f409e3137
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9aaa88178d47f02028348933d5b3889725618ed5811a7237b00d42f25f6727d9
[INFO] running `Command { std: "docker" "start" "-a" "9aaa88178d47f02028348933d5b3889725618ed5811a7237b00d42f25f6727d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling lfbs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `val` is never read
[INFO] [stdout]    --> src/lib.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |     struct DropCount<'a, T> {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 124 |         val: T,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "9aaa88178d47f02028348933d5b3889725618ed5811a7237b00d42f25f6727d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aaa88178d47f02028348933d5b3889725618ed5811a7237b00d42f25f6727d9", kill_on_drop: false }`
[INFO] [stdout] 9aaa88178d47f02028348933d5b3889725618ed5811a7237b00d42f25f6727d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d0a1397e018d9ba67c29addef7943ab53244d8bb146c50bf304f377af74368c3
[INFO] running `Command { std: "docker" "start" "-a" "d0a1397e018d9ba67c29addef7943ab53244d8bb146c50bf304f377af74368c3", kill_on_drop: false }`
[INFO] [stderr] warning: field `val` is never read
[INFO] [stderr]    --> src/lib.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |     struct DropCount<'a, T> {
[INFO] [stderr]     |            --------- field in this struct
[INFO] [stderr] 124 |         val: T,
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `lfbs` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lfbs-f6f9c72e5897fc4b)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::drop_count ... ok
[INFO] [stdout] test test::multithread_push ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.37s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lfbs
[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" "d0a1397e018d9ba67c29addef7943ab53244d8bb146c50bf304f377af74368c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0a1397e018d9ba67c29addef7943ab53244d8bb146c50bf304f377af74368c3", kill_on_drop: false }`
[INFO] [stdout] d0a1397e018d9ba67c29addef7943ab53244d8bb146c50bf304f377af74368c3