[INFO] fetching crate persy 1.1.6...
[INFO] checking persy-1.1.6 against try#5c7108a2805ef56743d713d2789c5e802631c9e8 for pr-97739
[INFO] extracting crate persy 1.1.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate persy 1.1.6 on toolchain 5c7108a2805ef56743d713d2789c5e802631c9e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5c7108a2805ef56743d713d2789c5e802631c9e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate persy 1.1.6
[INFO] finished tweaking crates.io crate persy 1.1.6
[INFO] tweaked toml for crates.io crate persy 1.1.6 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate persy 1.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5c7108a2805ef56743d713d2789c5e802631c9e8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+5c7108a2805ef56743d713d2789c5e802631c9e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 701f98108ef4080b62b6b28b4b2b8e5f29bc5ce3e03bd01ed4c95942f16fb092
[INFO] running `Command { std: "docker" "start" "-a" "701f98108ef4080b62b6b28b4b2b8e5f29bc5ce3e03bd01ed4c95942f16fb092", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "701f98108ef4080b62b6b28b4b2b8e5f29bc5ce3e03bd01ed4c95942f16fb092", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "701f98108ef4080b62b6b28b4b2b8e5f29bc5ce3e03bd01ed4c95942f16fb092", kill_on_drop: false }`
[INFO] [stdout] 701f98108ef4080b62b6b28b4b2b8e5f29bc5ce3e03bd01ed4c95942f16fb092
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+5c7108a2805ef56743d713d2789c5e802631c9e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 713d53b2ba9d8bd5166d28083fe4dbbe6efcde72de3d13c3bee319330cf6e0c5
[INFO] running `Command { std: "docker" "start" "-a" "713d53b2ba9d8bd5166d28083fe4dbbe6efcde72de3d13c3bee319330cf6e0c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.83
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling serde_derive v1.0.132
[INFO] [stderr]     Checking crc-catalog v1.1.1
[INFO] [stderr]    Compiling serde_json v1.0.73
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking unsigned-varint v0.7.1
[INFO] [stderr]     Checking crc v2.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking zigzag v0.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking persy v1.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]   --> tests/helpers.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _ = self.cond.wait(guard)?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _unused = self.cond.wait(guard)?;
[INFO] [stdout]    |                 ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             drop(self.cond.wait(guard)?);
[INFO] [stdout]    |             ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `persy` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]   --> tests/helpers.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _ = self.cond.wait(guard)?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _unused = self.cond.wait(guard)?;
[INFO] [stdout]    |                 ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             drop(self.cond.wait(guard)?);
[INFO] [stdout]    |             ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `persy` due to 2 previous errors
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]   --> tests/helpers.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _ = self.cond.wait(guard)?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _unused = self.cond.wait(guard)?;
[INFO] [stdout]    |                 ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             drop(self.cond.wait(guard)?);
[INFO] [stdout]    |             ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `persy` due to 2 previous errors
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]   --> tests/helpers.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _ = self.cond.wait(guard)?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _unused = self.cond.wait(guard)?;
[INFO] [stdout]    |                 ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             drop(self.cond.wait(guard)?);
[INFO] [stdout]    |             ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `persy` due to 2 previous errors
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]   --> tests/helpers.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _ = self.cond.wait(guard)?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _unused = self.cond.wait(guard)?;
[INFO] [stdout]    |                 ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             drop(self.cond.wait(guard)?);
[INFO] [stdout]    |             ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `persy` due to 2 previous errors
[INFO] [stdout] warning: field `pe` is never read
[INFO] [stdout]   --> tests/index.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 76 | struct TErr {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 77 |     pe: PersyError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: `TErr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]   --> tests/helpers.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _ = self.cond.wait(guard)?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _unused = self.cond.wait(guard)?;
[INFO] [stdout]    |                 ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             drop(self.cond.wait(guard)?);
[INFO] [stdout]    |             ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `persy` due to 2 previous errors; 1 warning emitted
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]   --> tests/helpers.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _ = self.cond.wait(guard)?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _unused = self.cond.wait(guard)?;
[INFO] [stdout]    |                 ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             drop(self.cond.wait(guard)?);
[INFO] [stdout]    |             ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `persy` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "713d53b2ba9d8bd5166d28083fe4dbbe6efcde72de3d13c3bee319330cf6e0c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "713d53b2ba9d8bd5166d28083fe4dbbe6efcde72de3d13c3bee319330cf6e0c5", kill_on_drop: false }`
[INFO] [stdout] 713d53b2ba9d8bd5166d28083fe4dbbe6efcde72de3d13c3bee319330cf6e0c5