[INFO] fetching crate highroller 0.1.0...
[INFO] checking highroller-0.1.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate highroller 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate highroller 0.1.0
[INFO] finished tweaking crates.io crate highroller 0.1.0
[INFO] tweaked toml for crates.io crate highroller 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate highroller 0.1.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1afdea9bd68be5f8ff14b1fb23736fdd190624aae6942338960caa6202235771
[INFO] running `Command { std: "docker" "start" "-a" "1afdea9bd68be5f8ff14b1fb23736fdd190624aae6942338960caa6202235771", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1afdea9bd68be5f8ff14b1fb23736fdd190624aae6942338960caa6202235771", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1afdea9bd68be5f8ff14b1fb23736fdd190624aae6942338960caa6202235771", kill_on_drop: false }`
[INFO] [stdout] 1afdea9bd68be5f8ff14b1fb23736fdd190624aae6942338960caa6202235771
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 907e51d3795dee7446864adf1bacf049e49c6de1f215d5f8a7f62d1d0a318b46
[INFO] running `Command { std: "docker" "start" "-a" "907e51d3795dee7446864adf1bacf049e49c6de1f215d5f8a7f62d1d0a318b46", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking highroller v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `lock_guard`
[INFO] [stdout]    --> src/lib.rs:418:16
[INFO] [stdout]     |
[INFO] [stdout] 418 |             Ok(lock_guard) => {
[INFO] [stdout]     |                ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lock_guard`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock_guard`
[INFO] [stdout]    --> src/lib.rs:423:21
[INFO] [stdout]     |
[INFO] [stdout] 423 |                 let lock_guard = poisoned_lock.into_inner();
[INFO] [stdout]     |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lock_guard`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock_guard`
[INFO] [stdout]    --> src/lib.rs:451:16
[INFO] [stdout]     |
[INFO] [stdout] 451 |             Ok(lock_guard) => {
[INFO] [stdout]     |                ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lock_guard`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock_guard`
[INFO] [stdout]    --> src/lib.rs:456:21
[INFO] [stdout]     |
[INFO] [stdout] 456 |                 let lock_guard = poisoned_lock.into_inner();
[INFO] [stdout]     |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lock_guard`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/lib.rs:437:17
[INFO] [stdout]     |
[INFO] [stdout] 437 |             for i in 0..count {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock_guard`
[INFO] [stdout]    --> src/lib.rs:505:16
[INFO] [stdout]     |
[INFO] [stdout] 505 |             Ok(lock_guard) => {
[INFO] [stdout]     |                ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lock_guard`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock_guard`
[INFO] [stdout]    --> src/lib.rs:510:21
[INFO] [stdout]     |
[INFO] [stdout] 510 |                 let lock_guard = poisoned_lock.into_inner();
[INFO] [stdout]     |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lock_guard`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock_guard`
[INFO] [stdout]    --> src/lib.rs:632:16
[INFO] [stdout]     |
[INFO] [stdout] 632 |             Ok(lock_guard) => {
[INFO] [stdout]     |                ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lock_guard`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock_guard`
[INFO] [stdout]    --> src/lib.rs:637:21
[INFO] [stdout]     |
[INFO] [stdout] 637 |                 let lock_guard = poisoned_lock.into_inner();
[INFO] [stdout]     |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lock_guard`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "907e51d3795dee7446864adf1bacf049e49c6de1f215d5f8a7f62d1d0a318b46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "907e51d3795dee7446864adf1bacf049e49c6de1f215d5f8a7f62d1d0a318b46", kill_on_drop: false }`
[INFO] [stdout] 907e51d3795dee7446864adf1bacf049e49c6de1f215d5f8a7f62d1d0a318b46