[INFO] cloning repository https://github.com/StasPV/atom_lock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/StasPV/atom_lock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStasPV%2Fatom_lock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStasPV%2Fatom_lock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f9d6a1eda7447e608bee75b3d47ae24dfe9aa335
[INFO] testing StasPV/atom_lock against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStasPV%2Fatom_lock" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/StasPV/atom_lock
[INFO] finished tweaking git repo https://github.com/StasPV/atom_lock
[INFO] tweaked toml for git repo https://github.com/StasPV/atom_lock written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/StasPV/atom_lock on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/StasPV/atom_lock 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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] testing StasPV/atom_lock against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStasPV%2Fatom_lock" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/StasPV/atom_lock
[INFO] finished tweaking git repo https://github.com/StasPV/atom_lock
[INFO] tweaked toml for git repo https://github.com/StasPV/atom_lock written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/StasPV/atom_lock on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/StasPV/atom_lock 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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-wait v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e3ab92a8299ef78cac2fd313ba72038c9ec7a849f9ee88fe91373eec5e09895
[INFO] running `Command { std: "docker" "start" "-a" "4e3ab92a8299ef78cac2fd313ba72038c9ec7a849f9ee88fe91373eec5e09895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e3ab92a8299ef78cac2fd313ba72038c9ec7a849f9ee88fe91373eec5e09895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e3ab92a8299ef78cac2fd313ba72038c9ec7a849f9ee88fe91373eec5e09895", kill_on_drop: false }`
[INFO] [stdout] 4e3ab92a8299ef78cac2fd313ba72038c9ec7a849f9ee88fe91373eec5e09895
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "build" "--frozen" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 591c46fce6e7697676f52ac3fb993f9aaeb3a6de3b5c8a45a580e5db42df5d76
[INFO] running `Command { std: "docker" "start" "-a" "591c46fce6e7697676f52ac3fb993f9aaeb3a6de3b5c8a45a580e5db42df5d76", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.95
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling atomic-wait v1.1.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling atom_lock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `RwLock` is never constructed
[INFO] [stdout]   --> src/rwlock.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct RwLock<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read`, and `write` are never used
[INFO] [stdout]   --> src/rwlock.rs:16:18
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl<T> RwLock<T> {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 16 |     pub const fn new(value: T) -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn read(&self) -> ReadGuard<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub fn write(&self) -> WriteGuard<T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ReadGuard` is never constructed
[INFO] [stdout]   --> src/rwlock.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct ReadGuard<'a, T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WriteGuard` is never constructed
[INFO] [stdout]    --> src/rwlock.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub struct WriteGuard<'a, T> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/spin_lock.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn lock(&self)-> Guard<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] 19 |     pub fn lock(&self)-> Guard<'_, T> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/mutex.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |     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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn lock(&self) -> MutexGuard<'_, T> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rwlock.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn read(&self) -> ReadGuard<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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn read(&self) -> ReadGuard<'_, T> {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rwlock.rs:46:18
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn write(&self) -> WriteGuard<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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn write(&self) -> WriteGuard<'_, T> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.67s
[INFO] running `Command { std: "docker" "inspect" "591c46fce6e7697676f52ac3fb993f9aaeb3a6de3b5c8a45a580e5db42df5d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "591c46fce6e7697676f52ac3fb993f9aaeb3a6de3b5c8a45a580e5db42df5d76", kill_on_drop: false }`
[INFO] [stdout] 591c46fce6e7697676f52ac3fb993f9aaeb3a6de3b5c8a45a580e5db42df5d76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "--no-run" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 4650d98e328bbcbf98772668fc536e2a79363fa41d5633860e984d6199bef892
[INFO] running `Command { std: "docker" "start" "-a" "4650d98e328bbcbf98772668fc536e2a79363fa41d5633860e984d6199bef892", kill_on_drop: false }`
[INFO] [stderr]    Compiling atom_lock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `RwLock` is never constructed
[INFO] [stdout]   --> src/rwlock.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct RwLock<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read`, and `write` are never used
[INFO] [stdout]   --> src/rwlock.rs:16:18
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl<T> RwLock<T> {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 16 |     pub const fn new(value: T) -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn read(&self) -> ReadGuard<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub fn write(&self) -> WriteGuard<T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ReadGuard` is never constructed
[INFO] [stdout]   --> src/rwlock.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct ReadGuard<'a, T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WriteGuard` is never constructed
[INFO] [stdout]    --> src/rwlock.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub struct WriteGuard<'a, T> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/spin_lock.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn lock(&self)-> Guard<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] 19 |     pub fn lock(&self)-> Guard<'_, T> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/mutex.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |     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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn lock(&self) -> MutexGuard<'_, T> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rwlock.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn read(&self) -> ReadGuard<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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn read(&self) -> ReadGuard<'_, T> {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rwlock.rs:46:18
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn write(&self) -> WriteGuard<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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn write(&self) -> WriteGuard<'_, T> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RwLock` is never constructed
[INFO] [stdout]   --> src/rwlock.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct RwLock<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read`, and `write` are never used
[INFO] [stdout]   --> src/rwlock.rs:16:18
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl<T> RwLock<T> {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 16 |     pub const fn new(value: T) -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn read(&self) -> ReadGuard<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub fn write(&self) -> WriteGuard<T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ReadGuard` is never constructed
[INFO] [stdout]   --> src/rwlock.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct ReadGuard<'a, T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WriteGuard` is never constructed
[INFO] [stdout]    --> src/rwlock.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub struct WriteGuard<'a, T> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/spin_lock.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn lock(&self)-> Guard<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] 19 |     pub fn lock(&self)-> Guard<'_, T> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/mutex.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |     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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn lock(&self) -> MutexGuard<'_, T> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rwlock.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn read(&self) -> ReadGuard<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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn read(&self) -> ReadGuard<'_, T> {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rwlock.rs:46:18
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn write(&self) -> WriteGuard<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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn write(&self) -> WriteGuard<'_, T> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "4650d98e328bbcbf98772668fc536e2a79363fa41d5633860e984d6199bef892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4650d98e328bbcbf98772668fc536e2a79363fa41d5633860e984d6199bef892", kill_on_drop: false }`
[INFO] [stdout] 4650d98e328bbcbf98772668fc536e2a79363fa41d5633860e984d6199bef892
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] dc263a1e44e1a7ecaece7f4876353264971896ebc16ccef67e421e3d92d54308
[INFO] running `Command { std: "docker" "start" "-a" "dc263a1e44e1a7ecaece7f4876353264971896ebc16ccef67e421e3d92d54308", kill_on_drop: false }`
[INFO] [stderr] warning: struct `RwLock` is never constructed
[INFO] [stderr]   --> src/rwlock.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct RwLock<T> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `read`, and `write` are never used
[INFO] [stderr]   --> src/rwlock.rs:16:18
[INFO] [stderr]    |
[INFO] [stderr] 15 | impl<T> RwLock<T> {
[INFO] [stderr]    | ----------------- associated items in this implementation
[INFO] [stderr] 16 |     pub const fn new(value: T) -> Self {
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] ...
[INFO] [stderr] 24 |     pub fn read(&self) -> ReadGuard<T> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 46 |     pub fn write(&self) -> WriteGuard<T> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ReadGuard` is never constructed
[INFO] [stderr]   --> src/rwlock.rs:83:12
[INFO] [stderr]    |
[INFO] [stderr] 83 | pub struct ReadGuard<'a, T> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `WriteGuard` is never constructed
[INFO] [stderr]    --> src/rwlock.rs:103:12
[INFO] [stderr]     |
[INFO] [stderr] 103 | pub struct WriteGuard<'a, T> {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/spin_lock.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn lock(&self)-> Guard<T> {
[INFO] [stderr]    |                 ^^^^^    ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn lock(&self)-> Guard<'_, T> {
[INFO] [stderr]    |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/mutex.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn lock(&self) -> MutexGuard<T> {
[INFO] [stderr]    |                 ^^^^^     ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn lock(&self) -> MutexGuard<'_, T> {
[INFO] [stderr]    |                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/rwlock.rs:24:17
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn read(&self) -> ReadGuard<T> {
[INFO] [stderr]    |                 ^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn read(&self) -> ReadGuard<'_, T> {
[INFO] [stderr]    |                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/rwlock.rs:46:18
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn write(&self) -> WriteGuard<T> {
[INFO] [stderr]    |                  ^^^^^     ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn write(&self) -> WriteGuard<'_, T> {
[INFO] [stderr]    |                                       +++
[INFO] [stderr] 
[INFO] [stderr] warning: `atom_lock` (lib) generated 8 warnings (run `cargo fix --lib -p atom_lock` to apply 4 suggestions)
[INFO] [stdout] 
[INFO] [stderr] warning: `atom_lock` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stdout] running 0 tests
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/build/atom_lock/3de8d2bfe4afba41/deps/atom_lock-3de8d2bfe4afba41)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/build/atom_lock/fcb70ca01aa63b29/deps/atom_lock-fcb70ca01aa63b29)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests atom_lock
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dc263a1e44e1a7ecaece7f4876353264971896ebc16ccef67e421e3d92d54308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc263a1e44e1a7ecaece7f4876353264971896ebc16ccef67e421e3d92d54308", kill_on_drop: false }`
[INFO] [stdout] dc263a1e44e1a7ecaece7f4876353264971896ebc16ccef67e421e3d92d54308
