[INFO] fetching crate parking_lot 0.12.1...
[INFO] checking parking_lot-0.12.1 against master#35936c4839dd272646394779d151e060d0f6b3ac for pr-122960-1
[INFO] extracting crate parking_lot 0.12.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate parking_lot 0.12.1 on toolchain 35936c4839dd272646394779d151e060d0f6b3ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate parking_lot 0.12.1
[INFO] finished tweaking crates.io crate parking_lot 0.12.1
[INFO] tweaked toml for crates.io crate parking_lot 0.12.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "generate-lockfile" "--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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9480b64a9731440e171d0a5132c641ae6a7a1ca8881adf01872ec78256180b54
[INFO] running `Command { std: "docker" "start" "-a" "9480b64a9731440e171d0a5132c641ae6a7a1ca8881adf01872ec78256180b54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9480b64a9731440e171d0a5132c641ae6a7a1ca8881adf01872ec78256180b54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9480b64a9731440e171d0a5132c641ae6a7a1ca8881adf01872ec78256180b54", kill_on_drop: false }`
[INFO] [stdout] 9480b64a9731440e171d0a5132c641ae6a7a1ca8881adf01872ec78256180b54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74cefa516166b0440adc8a2ceb3c38181696b63bd03a34a91ce2151d8a57ac11
[INFO] running `Command { std: "docker" "start" "-a" "74cefa516166b0440adc8a2ceb3c38181696b63bd03a34a91ce2151d8a57ac11", kill_on_drop: false }`
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking parking_lot v0.12.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `parking_lot_core` is imported redundantly
[INFO] [stdout]   --> src/condvar.rs:16:24
[INFO] [stdout]    |
[INFO] [stdout] 16 | use parking_lot_core::{self, ParkResult, RequeueOp, UnparkResult, DEFAULT_PARK_TOKEN};
[INFO] [stdout]    |                        ^^^^ the item `parking_lot_core` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `lock_api` is imported redundantly
[INFO] [stdout]  --> src/fair_mutex.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use lock_api;
[INFO] [stdout]   |     ^^^^^^^^ the item `lock_api` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `lock_api` is imported redundantly
[INFO] [stdout]  --> src/mutex.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use lock_api;
[INFO] [stdout]   |     ^^^^^^^^ the item `lock_api` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `parking_lot_core` is imported redundantly
[INFO] [stdout]   --> src/once.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 13 | use parking_lot_core::{self, SpinWait, DEFAULT_PARK_TOKEN, DEFAULT_UNPARK_TOKEN};
[INFO] [stdout]    |                        ^^^^ the item `parking_lot_core` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `parking_lot_core` is imported redundantly
[INFO] [stdout]   --> src/raw_mutex.rs:14:24
[INFO] [stdout]    |
[INFO] [stdout] 14 | use parking_lot_core::{self, ParkResult, SpinWait, UnparkResult, UnparkToken, DEFAULT_PARK_TOKEN};
[INFO] [stdout]    |                        ^^^^ the item `parking_lot_core` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `parking_lot_core` is imported redundantly
[INFO] [stdout]   --> src/raw_rwlock.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     self, deadlock, FilterOp, ParkResult, ParkToken, SpinWait, UnparkResult, UnparkToken,
[INFO] [stdout]    |     ^^^^ the item `parking_lot_core` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `lock_api` is imported redundantly
[INFO] [stdout]   --> src/remutex.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | use lock_api::{self, GetThreadId};
[INFO] [stdout]    |                ^^^^ the item `lock_api` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `lock_api` is imported redundantly
[INFO] [stdout]  --> src/rwlock.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use lock_api;
[INFO] [stdout]   |     ^^^^^^^^ the item `lock_api` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `parking_lot_core` is imported redundantly
[INFO] [stdout]   --> src/condvar.rs:16:24
[INFO] [stdout]    |
[INFO] [stdout] 16 | use parking_lot_core::{self, ParkResult, RequeueOp, UnparkResult, DEFAULT_PARK_TOKEN};
[INFO] [stdout]    |                        ^^^^ the item `parking_lot_core` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `lock_api` is imported redundantly
[INFO] [stdout]  --> src/fair_mutex.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use lock_api;
[INFO] [stdout]   |     ^^^^^^^^ the item `lock_api` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `lock_api` is imported redundantly
[INFO] [stdout]  --> src/mutex.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use lock_api;
[INFO] [stdout]   |     ^^^^^^^^ the item `lock_api` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `parking_lot_core` is imported redundantly
[INFO] [stdout]   --> src/once.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 13 | use parking_lot_core::{self, SpinWait, DEFAULT_PARK_TOKEN, DEFAULT_UNPARK_TOKEN};
[INFO] [stdout]    |                        ^^^^ the item `parking_lot_core` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `parking_lot_core` is imported redundantly
[INFO] [stdout]   --> src/raw_mutex.rs:14:24
[INFO] [stdout]    |
[INFO] [stdout] 14 | use parking_lot_core::{self, ParkResult, SpinWait, UnparkResult, UnparkToken, DEFAULT_PARK_TOKEN};
[INFO] [stdout]    |                        ^^^^ the item `parking_lot_core` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `parking_lot_core` is imported redundantly
[INFO] [stdout]   --> src/raw_rwlock.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     self, deadlock, FilterOp, ParkResult, ParkToken, SpinWait, UnparkResult, UnparkToken,
[INFO] [stdout]    |     ^^^^ the item `parking_lot_core` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `lock_api` is imported redundantly
[INFO] [stdout]   --> src/remutex.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | use lock_api::{self, GetThreadId};
[INFO] [stdout]    |                ^^^^ the item `lock_api` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `lock_api` is imported redundantly
[INFO] [stdout]  --> src/rwlock.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use lock_api;
[INFO] [stdout]   |     ^^^^^^^^ the item `lock_api` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "74cefa516166b0440adc8a2ceb3c38181696b63bd03a34a91ce2151d8a57ac11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74cefa516166b0440adc8a2ceb3c38181696b63bd03a34a91ce2151d8a57ac11", kill_on_drop: false }`
[INFO] [stdout] 74cefa516166b0440adc8a2ceb3c38181696b63bd03a34a91ce2151d8a57ac11