[INFO] cloning repository https://github.com/skorobogatydmitry/rust-atomics-n-locks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/skorobogatydmitry/rust-atomics-n-locks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskorobogatydmitry%2Frust-atomics-n-locks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskorobogatydmitry%2Frust-atomics-n-locks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2897c52991262b6a537938d06d756b2a42286fd
[INFO] testing skorobogatydmitry/rust-atomics-n-locks against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskorobogatydmitry%2Frust-atomics-n-locks" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/skorobogatydmitry/rust-atomics-n-locks
[INFO] finished tweaking git repo https://github.com/skorobogatydmitry/rust-atomics-n-locks
[INFO] tweaked toml for git repo https://github.com/skorobogatydmitry/rust-atomics-n-locks written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/skorobogatydmitry/rust-atomics-n-locks on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/skorobogatydmitry/rust-atomics-n-locks 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e0f9301606c104a047dbe1949ce36a9ae15e0c7bd3ff0775f1d85240b47bc70
[INFO] running `Command { std: "docker" "start" "-a" "7e0f9301606c104a047dbe1949ce36a9ae15e0c7bd3ff0775f1d85240b47bc70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e0f9301606c104a047dbe1949ce36a9ae15e0c7bd3ff0775f1d85240b47bc70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e0f9301606c104a047dbe1949ce36a9ae15e0c7bd3ff0775f1d85240b47bc70", kill_on_drop: false }`
[INFO] [stdout] 7e0f9301606c104a047dbe1949ce36a9ae15e0c7bd3ff0775f1d85240b47bc70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b54924e5527b95131dd781bb2b97202f7b7af3bfcf3010619eee00c856f5490f
[INFO] running `Command { std: "docker" "start" "-a" "b54924e5527b95131dd781bb2b97202f7b7af3bfcf3010619eee00c856f5490f", kill_on_drop: false }`
[INFO] [stderr]    Compiling strum v0.27.1
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling atomic-wait v1.1.0
[INFO] [stderr]    Compiling strum_macros v0.27.1
[INFO] [stderr]    Compiling atomics-n-locks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn read(&self) -> ReadGuard<Y> {
[INFO] [stdout]    |                 ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn read(&self) -> ReadGuard<'_, Y> {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:83:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn write(&self) -> WriteGuard<Y> {
[INFO] [stdout]    |                  ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn write(&self) -> WriteGuard<'_, Y> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn read(&self) -> ReadGuard2<Y> {
[INFO] [stdout]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn read(&self) -> ReadGuard2<'_, Y> {
[INFO] [stdout]     |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:182:18
[INFO] [stdout]     |
[INFO] [stdout] 182 |     pub fn write(&self) -> WriteGuard2<Y> {
[INFO] [stdout]     |                  ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 182 |     pub fn write(&self) -> WriteGuard2<'_, Y> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:272:17
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn read(&self) -> ReadGuard3<Y> {
[INFO] [stdout]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn read(&self) -> ReadGuard3<'_, Y> {
[INFO] [stdout]     |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:293:18
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn write(&self) -> WriteGuard3<Y> {
[INFO] [stdout]     |                  ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn write(&self) -> WriteGuard3<'_, Y> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.86s
[INFO] running `Command { std: "docker" "inspect" "b54924e5527b95131dd781bb2b97202f7b7af3bfcf3010619eee00c856f5490f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b54924e5527b95131dd781bb2b97202f7b7af3bfcf3010619eee00c856f5490f", kill_on_drop: false }`
[INFO] [stdout] b54924e5527b95131dd781bb2b97202f7b7af3bfcf3010619eee00c856f5490f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6fd29dce6fe70c5e6ad17a883e8518d38513a2aff8a972a74c8aeef5201dfa9
[INFO] running `Command { std: "docker" "start" "-a" "e6fd29dce6fe70c5e6ad17a883e8518d38513a2aff8a972a74c8aeef5201dfa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling atomics-n-locks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn read(&self) -> ReadGuard<Y> {
[INFO] [stdout]    |                 ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn read(&self) -> ReadGuard<'_, Y> {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:83:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn write(&self) -> WriteGuard<Y> {
[INFO] [stdout]    |                  ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn write(&self) -> WriteGuard<'_, Y> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn read(&self) -> ReadGuard2<Y> {
[INFO] [stdout]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn read(&self) -> ReadGuard2<'_, Y> {
[INFO] [stdout]     |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:182:18
[INFO] [stdout]     |
[INFO] [stdout] 182 |     pub fn write(&self) -> WriteGuard2<Y> {
[INFO] [stdout]     |                  ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 182 |     pub fn write(&self) -> WriteGuard2<'_, Y> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:272:17
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn read(&self) -> ReadGuard3<Y> {
[INFO] [stdout]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn read(&self) -> ReadGuard3<'_, Y> {
[INFO] [stdout]     |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:293:18
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn write(&self) -> WriteGuard3<Y> {
[INFO] [stdout]     |                  ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn write(&self) -> WriteGuard3<'_, Y> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn read(&self) -> ReadGuard<Y> {
[INFO] [stdout]    |                 ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn read(&self) -> ReadGuard<'_, Y> {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:83:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn write(&self) -> WriteGuard<Y> {
[INFO] [stdout]    |                  ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn write(&self) -> WriteGuard<'_, Y> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn read(&self) -> ReadGuard2<Y> {
[INFO] [stdout]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn read(&self) -> ReadGuard2<'_, Y> {
[INFO] [stdout]     |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:182:18
[INFO] [stdout]     |
[INFO] [stdout] 182 |     pub fn write(&self) -> WriteGuard2<Y> {
[INFO] [stdout]     |                  ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 182 |     pub fn write(&self) -> WriteGuard2<'_, Y> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:272:17
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn read(&self) -> ReadGuard3<Y> {
[INFO] [stdout]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn read(&self) -> ReadGuard3<'_, Y> {
[INFO] [stdout]     |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:293:18
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn write(&self) -> WriteGuard3<Y> {
[INFO] [stdout]     |                  ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn write(&self) -> WriteGuard3<'_, Y> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.80s
[INFO] running `Command { std: "docker" "inspect" "e6fd29dce6fe70c5e6ad17a883e8518d38513a2aff8a972a74c8aeef5201dfa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6fd29dce6fe70c5e6ad17a883e8518d38513a2aff8a972a74c8aeef5201dfa9", kill_on_drop: false }`
[INFO] [stdout] e6fd29dce6fe70c5e6ad17a883e8518d38513a2aff8a972a74c8aeef5201dfa9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2e61b3c39bdb826fd172cb394794558c21a6bc406e33fc1390ec55579611ecf5
[INFO] running `Command { std: "docker" "start" "-a" "2e61b3c39bdb826fd172cb394794558c21a6bc406e33fc1390ec55579611ecf5", kill_on_drop: false }`
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout] 
[INFO] [stderr]   --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:61:17
[INFO] [stdout] running 17 tests
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn read(&self) -> ReadGuard<Y> {
[INFO] [stderr]    |                 ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn read(&self) -> ReadGuard<'_, Y> {
[INFO] [stderr]    |                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:83:18
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn write(&self) -> WriteGuard<Y> {
[INFO] [stderr]    |                  ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn write(&self) -> WriteGuard<'_, Y> {
[INFO] [stderr]    |                                       +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:164:17
[INFO] [stderr]     |
[INFO] [stderr] 164 |     pub fn read(&self) -> ReadGuard2<Y> {
[INFO] [stderr]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 164 |     pub fn read(&self) -> ReadGuard2<'_, Y> {
[INFO] [stderr]     |                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:182:18
[INFO] [stderr]     |
[INFO] [stderr] 182 |     pub fn write(&self) -> WriteGuard2<Y> {
[INFO] [stderr]     |                  ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 182 |     pub fn write(&self) -> WriteGuard2<'_, Y> {
[INFO] [stderr]     |                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:272:17
[INFO] [stderr]     |
[INFO] [stderr] 272 |     pub fn read(&self) -> ReadGuard3<Y> {
[INFO] [stderr]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 272 |     pub fn read(&self) -> ReadGuard3<'_, Y> {
[INFO] [stderr]     |                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/ch9_building_our_own_locks/p3_read_write_lock.rs:293:18
[INFO] [stderr]     |
[INFO] [stderr] 293 |     pub fn write(&self) -> WriteGuard3<Y> {
[INFO] [stderr]     |                  ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 293 |     pub fn write(&self) -> WriteGuard3<'_, Y> {
[INFO] [stderr]     |                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: `atomics-n-locks` (lib) generated 6 warnings
[INFO] [stderr] warning: `atomics-n-locks` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/atomics_n_locks-f9c91606affbd027)
[INFO] [stdout] test ch10_ideas_and_inspirations::semaphore::test::test_semaphore_limit ... ok
[INFO] [stdout] test ch6_building_our_own_arc::basic::test::test ... ok
[INFO] [stdout] test ch6_building_our_own_arc::optimization::test::test ... ok
[INFO] [stdout] test ch6_building_our_own_arc::weak::test::test ... ok
[INFO] [stdout] test ch10_ideas_and_inspirations::semaphore::test::test_new_panics - should panic ... ok
[INFO] [stdout] test ch10_ideas_and_inspirations::semaphore::test::test_mutex ... ok
[INFO] [stdout] test ch10_ideas_and_inspirations::rcu::test_simple_rcu ... ok
[INFO] [stdout] test ch6_building_our_own_arc::optimization::test::test_annoying ... ok
[INFO] [stdout] test ch10_ideas_and_inspirations::seqlock::test::test_multiple_writers ... ok
[INFO] [stdout] test ch9_building_our_own_locks::p1_mutex::test::test_trivial_uncontended_optimized_mutex ... ok
[INFO] [stdout] test ch7_understanding_the_processor::test::ordering_bug ... ok
[INFO] [stdout] test ch10_ideas_and_inspirations::seqlock::test::test_writer_block_readers ... ok
[INFO] [stdout] test ch9_building_our_own_locks::p1_mutex::test::test_concurrent_lock_attempts_optimized_mutex ... ok
[INFO] [stdout] test ch9_building_our_own_locks::p2_condition_variable::test::test_condvar ... ok
[INFO] [stdout] test ch9_building_our_own_locks::p1_mutex::test::test_trivial_uncontended_simple_mutex ... ok
[INFO] [stdout] test ch9_building_our_own_locks::p1_mutex::test::test_concurrent_lock_attempts_simple_mutex ... ok
[INFO] [stdout] test ch10_ideas_and_inspirations::semaphore::test::test_semaphore has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "2e61b3c39bdb826fd172cb394794558c21a6bc406e33fc1390ec55579611ecf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e61b3c39bdb826fd172cb394794558c21a6bc406e33fc1390ec55579611ecf5", kill_on_drop: false }`
[INFO] [stdout] 2e61b3c39bdb826fd172cb394794558c21a6bc406e33fc1390ec55579611ecf5
