[INFO] fetching crate smartpool 0.3.2...
[INFO] checking smartpool-0.3.2 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate smartpool 0.3.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate smartpool 0.3.2 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smartpool 0.3.2
[INFO] finished tweaking crates.io crate smartpool 0.3.2
[INFO] tweaked toml for crates.io crate smartpool 0.3.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ba2f1f74138617a1ad3d52d45de652e0ba491c604c70271b7cd7db2e0c8ab8a
[INFO] running `Command { std: "docker" "start" "-a" "8ba2f1f74138617a1ad3d52d45de652e0ba491c604c70271b7cd7db2e0c8ab8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ba2f1f74138617a1ad3d52d45de652e0ba491c604c70271b7cd7db2e0c8ab8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ba2f1f74138617a1ad3d52d45de652e0ba491c604c70271b7cd7db2e0c8ab8a", kill_on_drop: false }`
[INFO] [stdout] 8ba2f1f74138617a1ad3d52d45de652e0ba491c604c70271b7cd7db2e0c8ab8a
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0248cd2cf6c543740b5bf444e91c9c6b9d6d5750cd6fa209b43c1d9017c5d66e
[INFO] running `Command { std: "docker" "start" "-a" "0248cd2cf6c543740b5bf444e91c9c6b9d6d5750cd6fa209b43c1d9017c5d66e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking monitor v0.1.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking through v0.1.0
[INFO] [stderr]     Checking atomic v0.4.6
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking atom v0.3.6
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking smallqueue v0.1.0
[INFO] [stderr]     Checking atomicmonitor v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking stopwatch v0.0.7
[INFO] [stderr]     Checking smartpool v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/channel/sdf.rs:36:24
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Some((key, mut queue)) => {
[INFO] [stdout]    |                        ----^^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/channel/sdf.rs:64:18
[INFO] [stdout]    |
[INFO] [stdout] 64 |             Some(mut queue) => {
[INFO] [stdout]    |                  ----^^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking pretty_env_logger v0.2.5
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/test.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/test.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 | static INIT_LOG: Once = ONCE_INIT;
[INFO] [stdout]    |                         ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/channel/sdf.rs:36:24
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Some((key, mut queue)) => {
[INFO] [stdout]    |                        ----^^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/channel/sdf.rs:64:18
[INFO] [stdout]    |
[INFO] [stdout] 64 |             Some(mut queue) => {
[INFO] [stdout]    |                  ----^^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.51s
[INFO] running `Command { std: "docker" "inspect" "0248cd2cf6c543740b5bf444e91c9c6b9d6d5750cd6fa209b43c1d9017c5d66e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0248cd2cf6c543740b5bf444e91c9c6b9d6d5750cd6fa209b43c1d9017c5d66e", kill_on_drop: false }`
[INFO] [stdout] 0248cd2cf6c543740b5bf444e91c9c6b9d6d5750cd6fa209b43c1d9017c5d66e