[INFO] fetching crate cueball 0.3.5... [INFO] checking cueball-0.3.5 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1 [INFO] extracting crate cueball 0.3.5 into /workspace/builds/worker-4-tc1/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-4-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate cueball 0.3.5 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded slog-stdlog v3.0.5 [INFO] [stderr] Downloaded crossbeam v0.2.12 [INFO] [stderr] Downloaded instant v0.1.3 [INFO] [stderr] Downloaded arc-swap v0.4.6 [INFO] [stderr] Downloaded slog v2.5.2 [INFO] [stderr] Downloaded backoff v0.1.6 [INFO] [stderr] Downloaded slog-term v2.5.0 [INFO] [stderr] Downloaded slog-scope v4.3.0 [INFO] [stderr] Downloaded term v0.6.1 [INFO] [stderr] Downloaded chrono v0.4.11 [INFO] [stderr] Downloaded libc v0.2.70 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8ea51c0475ae337f5389dffd5f843fea9eda4d08e77e6fa422625e31d2c86d49 [INFO] running `Command { std: "docker" "start" "-a" "8ea51c0475ae337f5389dffd5f843fea9eda4d08e77e6fa422625e31d2c86d49", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8ea51c0475ae337f5389dffd5f843fea9eda4d08e77e6fa422625e31d2c86d49", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8ea51c0475ae337f5389dffd5f843fea9eda4d08e77e6fa422625e31d2c86d49", kill_on_drop: false }` [INFO] [stdout] 8ea51c0475ae337f5389dffd5f843fea9eda4d08e77e6fa422625e31d2c86d49 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ec2ee1e73047d7b714425f389cb1913295816795abce4ddbef718159751e529a [INFO] running `Command { std: "docker" "start" "-a" "ec2ee1e73047d7b714425f389cb1913295816795abce4ddbef718159751e529a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.70 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling slog v2.5.2 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking arc-swap v0.4.6 [INFO] [stderr] Compiling typenum v1.10.0 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking instant v0.1.3 [INFO] [stderr] Checking slog-scope v4.3.0 [INFO] [stderr] Checking crossbeam v0.2.12 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking sha1 v0.6.0 [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 slog-stdlog v3.0.5 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking dirs v2.0.2 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking term v0.6.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking chrono v0.4.11 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking backoff v0.1.6 [INFO] [stderr] Checking timer v0.2.0 [INFO] [stderr] Checking slog-term v2.5.0 [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)]` 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: 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)]` 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: 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)]` on by default [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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.18s [INFO] running `Command { std: "docker" "inspect" "ec2ee1e73047d7b714425f389cb1913295816795abce4ddbef718159751e529a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ec2ee1e73047d7b714425f389cb1913295816795abce4ddbef718159751e529a", kill_on_drop: false }` [INFO] [stdout] ec2ee1e73047d7b714425f389cb1913295816795abce4ddbef718159751e529a