[INFO] fetching crate rwlock2 0.2.5...
[INFO] checking rwlock2-0.2.5 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate rwlock2 0.2.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate rwlock2 0.2.5 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rwlock2 0.2.5
[INFO] finished tweaking crates.io crate rwlock2 0.2.5
[INFO] tweaked toml for crates.io crate rwlock2 0.2.5 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3c5155dd9fc4f1021f0c70051970aac17564bb271f94b35f385fe5f06f3a89da
[INFO] running `"docker" "start" "-a" "3c5155dd9fc4f1021f0c70051970aac17564bb271f94b35f385fe5f06f3a89da"`
[INFO] [stderr]     Checking rwlock2 v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/rwlock.rs:160:16
[INFO] [stderr]     |
[INFO] [stderr] 160 |             Ok(try!(RwLockReadGuard::new(&*self.inner, &self.data)))
[INFO] [stderr]     |                ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/rwlock.rs:206:16
[INFO] [stderr]     |
[INFO] [stderr] 206 |             Ok(try!(RwLockWriteGuard::new(&*self.inner, &self.data)))
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/mutex.rs:215:20
[INFO] [stderr]     |
[INFO] [stderr] 215 |                 Ok(try!(MutexGuard::new(&*self.inner, &self.data)))
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/poison.rs:158:32
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/rwlock.rs:160:16
[INFO] [stderr]     |
[INFO] [stderr] 160 |             Ok(try!(RwLockReadGuard::new(&*self.inner, &self.data)))
[INFO] [stderr]     |                ^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:1:24
[INFO] [stderr]     |
[INFO] [stderr] 1   | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]     |                        ^^^^^^^^
[INFO] [stderr]     = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/rwlock.rs:206:16
[INFO] [stderr]     |
[INFO] [stderr] 206 |             Ok(try!(RwLockWriteGuard::new(&*self.inner, &self.data)))
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/mutex.rs:215:20
[INFO] [stderr]     |
[INFO] [stderr] 215 |                 Ok(try!(MutexGuard::new(&*self.inner, &self.data)))
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/poison.rs:158:32
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:1:24
[INFO] [stderr]     |
[INFO] [stderr] 1   | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]     |                        ^^^^^^^^
[INFO] [stderr]     = note: `#[deny(bare_trait_objects)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `rwlock2`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3c5155dd9fc4f1021f0c70051970aac17564bb271f94b35f385fe5f06f3a89da"`
[INFO] running `"docker" "rm" "-f" "3c5155dd9fc4f1021f0c70051970aac17564bb271f94b35f385fe5f06f3a89da"`
[INFO] [stdout] 3c5155dd9fc4f1021f0c70051970aac17564bb271f94b35f385fe5f06f3a89da