[INFO] fetching crate anuma-miner 0.2.4...
[INFO] checking anuma-miner-0.2.4 against master#a33907a7a5381473eec8bcfa0c56e05a856a911c for pr-151539
[INFO] extracting crate anuma-miner 0.2.4 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate anuma-miner 0.2.4
[INFO] finished tweaking crates.io crate anuma-miner 0.2.4
[INFO] tweaked toml for crates.io crate anuma-miner 0.2.4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate anuma-miner 0.2.4 on toolchain a33907a7a5381473eec8bcfa0c56e05a856a911c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a33907a7a5381473eec8bcfa0c56e05a856a911c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate anuma-miner 0.2.4 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" "+a33907a7a5381473eec8bcfa0c56e05a856a911c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+a33907a7a5381473eec8bcfa0c56e05a856a911c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5bb0b1172bc2f3593935e1351b17e54ef512868f7b1565ac2ca55191fa29c53b
[INFO] running `Command { std: "docker" "start" "-a" "5bb0b1172bc2f3593935e1351b17e54ef512868f7b1565ac2ca55191fa29c53b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bb0b1172bc2f3593935e1351b17e54ef512868f7b1565ac2ca55191fa29c53b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bb0b1172bc2f3593935e1351b17e54ef512868f7b1565ac2ca55191fa29c53b", kill_on_drop: false }`
[INFO] [stdout] 5bb0b1172bc2f3593935e1351b17e54ef512868f7b1565ac2ca55191fa29c53b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+a33907a7a5381473eec8bcfa0c56e05a856a911c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c3eebc5f2950fca04b02271b8327fcf11a1ccbbd231da8da3db80e4382432ca
[INFO] running `Command { std: "docker" "start" "-a" "9c3eebc5f2950fca04b02271b8327fcf11a1ccbbd231da8da3db80e4382432ca", kill_on_drop: false }`
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[INFO] [stderr]    Compiling anuma-miner v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking hyper v0.14.27
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[INFO] [stdout] warning: unused imports: `Barrier` and `thread`
[INFO] [stdout]    --> src/swap_rust.rs:114:21
[INFO] [stdout]     |
[INFO] [stdout] 114 |         sync::{Arc, Barrier},
[INFO] [stdout]     |                     ^^^^^^^
[INFO] [stdout] 115 |         thread,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/pow.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct State {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 19 |     pub id: usize,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `State` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/swap_rust.rs:125:21
[INFO] [stdout]     |
[INFO] [stdout] 125 |         pub fn lock(&self) -> MutexGuard<T> {
[INFO] [stdout]     |                     ^^^^^     ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 125 |         pub fn lock(&self) -> MutexGuard<'_, T> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/pow.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct State {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 19 |     pub id: usize,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `State` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/swap_rust.rs:125:21
[INFO] [stdout]     |
[INFO] [stdout] 125 |         pub fn lock(&self) -> MutexGuard<T> {
[INFO] [stdout]     |                     ^^^^^     ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 125 |         pub fn lock(&self) -> MutexGuard<'_, T> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 46.44s
[INFO] running `Command { std: "docker" "inspect" "9c3eebc5f2950fca04b02271b8327fcf11a1ccbbd231da8da3db80e4382432ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c3eebc5f2950fca04b02271b8327fcf11a1ccbbd231da8da3db80e4382432ca", kill_on_drop: false }`
[INFO] [stdout] 9c3eebc5f2950fca04b02271b8327fcf11a1ccbbd231da8da3db80e4382432ca