[INFO] fetching crate generic-cursors 0.0.3...
[INFO] testing generic-cursors-0.0.3 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate generic-cursors 0.0.3 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate generic-cursors 0.0.3
[INFO] finished tweaking crates.io crate generic-cursors 0.0.3
[INFO] tweaked toml for crates.io crate generic-cursors 0.0.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate generic-cursors 0.0.3 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate generic-cursors 0.0.3 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] faabdd3fba2b3deea08aa8d47bcc1908ef1344d3ce19a6d77bdc5ee3fb066c89
[INFO] running `Command { std: "docker" "start" "-a" "faabdd3fba2b3deea08aa8d47bcc1908ef1344d3ce19a6d77bdc5ee3fb066c89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "faabdd3fba2b3deea08aa8d47bcc1908ef1344d3ce19a6d77bdc5ee3fb066c89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faabdd3fba2b3deea08aa8d47bcc1908ef1344d3ce19a6d77bdc5ee3fb066c89", kill_on_drop: false }`
[INFO] [stdout] faabdd3fba2b3deea08aa8d47bcc1908ef1344d3ce19a6d77bdc5ee3fb066c89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 571457b26dea1bded8ed1f1fde3b68fd848d2766e47e165d0fa995e5a0b10165
[INFO] running `Command { std: "docker" "start" "-a" "571457b26dea1bded8ed1f1fde3b68fd848d2766e47e165d0fa995e5a0b10165", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-cursors v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "571457b26dea1bded8ed1f1fde3b68fd848d2766e47e165d0fa995e5a0b10165", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "571457b26dea1bded8ed1f1fde3b68fd848d2766e47e165d0fa995e5a0b10165", kill_on_drop: false }`
[INFO] [stdout] 571457b26dea1bded8ed1f1fde3b68fd848d2766e47e165d0fa995e5a0b10165
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f2a1e4e322c36b3562c6ad8765647f1fa3f92ddbd45764337458300e0433253
[INFO] running `Command { std: "docker" "start" "-a" "3f2a1e4e322c36b3562c6ad8765647f1fa3f92ddbd45764337458300e0433253", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-cursors v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `insert_next` is never used
[INFO] [stdout]   --> examples/cyclic_sync.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T> CyclicDataStructure<T> {
[INFO] [stdout]    | ------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn insert_next(&mut self, new_next: Arc<Mutex<Self>>) -> Option<Arc<Mutex<Self>>> {
[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 0.74s
[INFO] running `Command { std: "docker" "inspect" "3f2a1e4e322c36b3562c6ad8765647f1fa3f92ddbd45764337458300e0433253", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f2a1e4e322c36b3562c6ad8765647f1fa3f92ddbd45764337458300e0433253", kill_on_drop: false }`
[INFO] [stdout] 3f2a1e4e322c36b3562c6ad8765647f1fa3f92ddbd45764337458300e0433253
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f47d3647710ab83ef0354662c73f4f12db6c92d788cc5f29a7d7d84c04f3384e
[INFO] running `Command { std: "docker" "start" "-a" "f47d3647710ab83ef0354662c73f4f12db6c92d788cc5f29a7d7d84c04f3384e", kill_on_drop: false }`
[INFO] [stderr] warning: method `insert_next` is never used
[INFO] [stderr]   --> examples/cyclic_sync.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl<T> CyclicDataStructure<T> {
[INFO] [stderr]    | ------------------------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 15 |     fn insert_next(&mut self, new_next: Arc<Mutex<Self>>) -> Option<Arc<Mutex<Self>>> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `generic-cursors` (example "cyclic_sync") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/generic_cursors-e49d1dd3d1a3a34b)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests generic_cursors
[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] [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" "f47d3647710ab83ef0354662c73f4f12db6c92d788cc5f29a7d7d84c04f3384e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f47d3647710ab83ef0354662c73f4f12db6c92d788cc5f29a7d7d84c04f3384e", kill_on_drop: false }`
[INFO] [stdout] f47d3647710ab83ef0354662c73f4f12db6c92d788cc5f29a7d7d84c04f3384e