[INFO] fetching crate happylock 0.5.0... [INFO] checking happylock-0.5.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1 [INFO] extracting crate happylock 0.5.0 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate happylock 0.5.0 [INFO] finished tweaking crates.io crate happylock 0.5.0 [INFO] tweaked toml for crates.io crate happylock 0.5.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate happylock 0.5.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate happylock 0.5.0 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a4ea36a47d80bcb0339252c976cf41716fb9ed02fe5bd81e0f0fd17e57fb4f8e [INFO] running `Command { std: "docker" "start" "-a" "a4ea36a47d80bcb0339252c976cf41716fb9ed02fe5bd81e0f0fd17e57fb4f8e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a4ea36a47d80bcb0339252c976cf41716fb9ed02fe5bd81e0f0fd17e57fb4f8e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a4ea36a47d80bcb0339252c976cf41716fb9ed02fe5bd81e0f0fd17e57fb4f8e", kill_on_drop: false }` [INFO] [stdout] a4ea36a47d80bcb0339252c976cf41716fb9ed02fe5bd81e0f0fd17e57fb4f8e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8cf637b74f7a0c481c9b29c302e095b6df8a4bba42e3319a3ef2debe26573034 [INFO] running `Command { std: "docker" "start" "-a" "8cf637b74f7a0c481c9b29c302e095b6df8a4bba42e3319a3ef2debe26573034", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.170 [INFO] [stderr] Compiling autocfg v1.4.0 [INFO] [stderr] Compiling parking_lot_core v0.9.10 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking scopeguard v1.2.0 [INFO] [stderr] Checking smallvec v1.14.0 [INFO] [stderr] Compiling mutants v0.0.3 [INFO] [stderr] Compiling lock_api v0.4.12 [INFO] [stderr] Checking parking_lot v0.12.3 [INFO] [stderr] Checking happylock v0.5.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `ReadLock` is never constructed [INFO] [stdout] --> src/rwlock.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | struct ReadLock<'l, T: ?Sized, R>(&'l RwLock); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `WriteLock` is never constructed [INFO] [stdout] --> src/rwlock.rs:70:8 [INFO] [stdout] | [INFO] [stdout] 70 | struct WriteLock<'l, T: ?Sized, R>(&'l RwLock); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/rwlock/read_lock.rs:132:15 [INFO] [stdout] | [INFO] [stdout] 120 | impl<'l, T, R> ReadLock<'l, T, R> { [INFO] [stdout] | --------------------------------- associated function in this implementation [INFO] [stdout] ... [INFO] [stdout] 132 | pub const fn new(rwlock: &'l RwLock) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `scoped_lock`, `scoped_try_lock`, `lock`, `try_lock`, `try_lock_no_key`, and `unlock` are never used [INFO] [stdout] --> src/rwlock/read_lock.rs:138:9 [INFO] [stdout] | [INFO] [stdout] 137 | impl ReadLock<'_, T, R> { [INFO] [stdout] | ---------------------------------------- associated items in this implementation [INFO] [stdout] 138 | pub fn scoped_lock<'a, Ret>(&'a self, key: impl Keyable, f: impl Fn(&'a T) -> Ret) -> Ret { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 142 | pub fn scoped_try_lock<'a, Key: Keyable, Ret>( [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 181 | pub fn lock(&self, key: ThreadKey) -> RwLockReadGuard<'_, T, R> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 216 | pub fn try_lock(&self, key: ThreadKey) -> Result, ThreadKey> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 222 | pub(crate) unsafe fn try_lock_no_key(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 248 | pub fn unlock(guard: RwLockReadGuard<'_, T, R>) -> ThreadKey { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/rwlock/write_lock.rs:117:15 [INFO] [stdout] | [INFO] [stdout] 105 | impl<'l, T, R> WriteLock<'l, T, R> { [INFO] [stdout] | ---------------------------------- associated function in this implementation [INFO] [stdout] ... [INFO] [stdout] 117 | pub const fn new(rwlock: &'l RwLock) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `scoped_lock`, `scoped_try_lock`, `lock`, `try_lock`, and `unlock` are never used [INFO] [stdout] --> src/rwlock/write_lock.rs:123:9 [INFO] [stdout] | [INFO] [stdout] 122 | impl WriteLock<'_, T, R> { [INFO] [stdout] | ----------------------------------------- associated items in this implementation [INFO] [stdout] 123 | pub fn scoped_lock<'a, Ret>(&'a self, key: impl Keyable, f: impl Fn(&'a mut T) -> Ret) -> Ret { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 127 | pub fn scoped_try_lock<'a, Key: Keyable, Ret>( [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 163 | pub fn lock(&self, key: ThreadKey) -> RwLockWriteGuard<'_, T, R> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 197 | pub fn try_lock(&self, key: ThreadKey) -> Result, ThreadKey> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 226 | pub fn unlock(guard: RwLockWriteGuard<'_, T, R>) -> ThreadKey { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.63s [INFO] running `Command { std: "docker" "inspect" "8cf637b74f7a0c481c9b29c302e095b6df8a4bba42e3319a3ef2debe26573034", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8cf637b74f7a0c481c9b29c302e095b6df8a4bba42e3319a3ef2debe26573034", kill_on_drop: false }` [INFO] [stdout] 8cf637b74f7a0c481c9b29c302e095b6df8a4bba42e3319a3ef2debe26573034