[INFO] fetching crate happylock 0.5.0...
[INFO] checking happylock-0.5.0 against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] extracting crate happylock 0.5.0 into /workspace/builds/worker-3-tc1/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-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate happylock 0.5.0 on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "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" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mutants v0.0.3
[INFO] [stderr]   Downloaded redox_syscall v0.5.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7aa60a5002082b45c874b29cdee52691c116742aab2acec1fe26aeca2d924da0
[INFO] running `Command { std: "docker" "start" "-a" "7aa60a5002082b45c874b29cdee52691c116742aab2acec1fe26aeca2d924da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7aa60a5002082b45c874b29cdee52691c116742aab2acec1fe26aeca2d924da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aa60a5002082b45c874b29cdee52691c116742aab2acec1fe26aeca2d924da0", kill_on_drop: false }`
[INFO] [stdout] 7aa60a5002082b45c874b29cdee52691c116742aab2acec1fe26aeca2d924da0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9b65e86ae159bc2d17dd18a3c2acd096150f712018acb1a5d2bb7a34619a52e
[INFO] running `Command { std: "docker" "start" "-a" "b9b65e86ae159bc2d17dd18a3c2acd096150f712018acb1a5d2bb7a34619a52e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling libc v0.2.170
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking smallvec v1.14.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking scopeguard v1.2.0
[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<T, R>);
[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<T, R>);
[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<T, R>) -> 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<T, R: RawRwLock> 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<RwLockReadGuard<'_, T, R>, ThreadKey> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 222 |     pub(crate) unsafe fn try_lock_no_key(&self) -> Option<RwLockReadRef<'_, T, R>> {
[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<T, R>) -> 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<T, R: RawRwLock> 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<RwLockWriteGuard<'_, T, R>, 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 3.38s
[INFO] running `Command { std: "docker" "inspect" "b9b65e86ae159bc2d17dd18a3c2acd096150f712018acb1a5d2bb7a34619a52e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9b65e86ae159bc2d17dd18a3c2acd096150f712018acb1a5d2bb7a34619a52e", kill_on_drop: false }`
[INFO] [stdout] b9b65e86ae159bc2d17dd18a3c2acd096150f712018acb1a5d2bb7a34619a52e
