[INFO] fetching crate cueball 0.3.5... [INFO] checking cueball-0.3.5 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3 [INFO] extracting crate cueball 0.3.5 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate cueball 0.3.5 [INFO] finished tweaking crates.io crate cueball 0.3.5 [INFO] tweaked toml for crates.io crate cueball 0.3.5 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate cueball 0.3.5 on toolchain b1f2594eac607c1f051534800237eeedb5590a49 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate cueball 0.3.5 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5904ce543a1b09e8bba62a675d7d6cb4a43e7f2de3d60c53dee6382ddfc33297 [INFO] running `Command { std: "docker" "start" "-a" "5904ce543a1b09e8bba62a675d7d6cb4a43e7f2de3d60c53dee6382ddfc33297", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5904ce543a1b09e8bba62a675d7d6cb4a43e7f2de3d60c53dee6382ddfc33297", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5904ce543a1b09e8bba62a675d7d6cb4a43e7f2de3d60c53dee6382ddfc33297", kill_on_drop: false }` [INFO] [stdout] 5904ce543a1b09e8bba62a675d7d6cb4a43e7f2de3d60c53dee6382ddfc33297 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e558fcfb0cc994eff08dc5bd43471678d2ed0d273734655c25f1b71f6198d84e [INFO] running `Command { std: "docker" "start" "-a" "e558fcfb0cc994eff08dc5bd43471678d2ed0d273734655c25f1b71f6198d84e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.70 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling slog v2.5.2 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking arc-swap v0.4.6 [INFO] [stderr] Compiling typenum v1.10.0 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking crossbeam v0.2.12 [INFO] [stderr] Checking instant v0.1.3 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking sha1 v0.6.0 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking slog-scope v4.3.0 [INFO] [stderr] Checking slog-stdlog v3.0.5 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking time v0.1.43 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking dirs-sys v0.3.4 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking dirs v2.0.2 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking term v0.6.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking chrono v0.4.11 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking timer v0.2.0 [INFO] [stderr] Checking slog-term v2.5.0 [INFO] [stderr] Checking backoff v0.1.6 [INFO] [stderr] Compiling derive_more v0.14.1 [INFO] [stderr] Checking cueball v0.3.5 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/connection_pool.rs:530:13 [INFO] [stdout] | [INFO] [stdout] 530 | let mut connection_data = connection_data_guard.deref_mut(); [INFO] [stdout] | ----^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/connection_pool.rs:530:13 [INFO] [stdout] | [INFO] [stdout] 530 | let mut connection_data = connection_data_guard.deref_mut(); [INFO] [stdout] | ----^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (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/connection_pool/types.rs:195:33 [INFO] [stdout] | [INFO] [stdout] 195 | pub fn connection_data_lock(&self) -> MutexGuard> { [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] 195 | pub fn connection_data_lock(&self) -> MutexGuard<'_, ConnectionData> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/connection_pool/types.rs:249:21 [INFO] [stdout] | [INFO] [stdout] 249 | pub fn get_lock(&self) -> MutexGuard { [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] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 249 | pub fn get_lock(&self) -> MutexGuard<'_, bool> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/connection_pool/types.rs:195:33 [INFO] [stdout] | [INFO] [stdout] 195 | pub fn connection_data_lock(&self) -> MutexGuard> { [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] 195 | pub fn connection_data_lock(&self) -> MutexGuard<'_, ConnectionData> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/connection_pool/types.rs:249:21 [INFO] [stdout] | [INFO] [stdout] 249 | pub fn get_lock(&self) -> MutexGuard { [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] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 249 | pub fn get_lock(&self) -> MutexGuard<'_, bool> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `addr` is never read [INFO] [stdout] --> examples/basic.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 22 | pub struct DummyConnection { [INFO] [stdout] | --------------- field in this struct [INFO] [stdout] 23 | addr: SocketAddr, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `DummyConnection` has a derived impl for the trait `Debug`, 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: field `addr` is never read [INFO] [stdout] --> tests/basic_test.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 22 | pub struct DummyConnection { [INFO] [stdout] | --------------- field in this struct [INFO] [stdout] 23 | addr: SocketAddr, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `DummyConnection` has a derived impl for the trait `Debug`, 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] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.99s [INFO] running `Command { std: "docker" "inspect" "e558fcfb0cc994eff08dc5bd43471678d2ed0d273734655c25f1b71f6198d84e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e558fcfb0cc994eff08dc5bd43471678d2ed0d273734655c25f1b71f6198d84e", kill_on_drop: false }` [INFO] [stdout] e558fcfb0cc994eff08dc5bd43471678d2ed0d273734655c25f1b71f6198d84e