[INFO] cloning repository https://github.com/ItsAshrafSyed/rust-plays
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ItsAshrafSyed/rust-plays" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FItsAshrafSyed%2Frust-plays", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FItsAshrafSyed%2Frust-plays'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 036936ebb59f3819c37236d89d0adebaa3b9ead6
[INFO] checking ItsAshrafSyed/rust-plays against try#9961e55b3687a6d0b2bab4af0e5e81494b09be81 for pr-139087-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FItsAshrafSyed%2Frust-plays" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ItsAshrafSyed/rust-plays
[INFO] finished tweaking git repo https://github.com/ItsAshrafSyed/rust-plays
[INFO] tweaked toml for git repo https://github.com/ItsAshrafSyed/rust-plays written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ItsAshrafSyed/rust-plays on toolchain 9961e55b3687a6d0b2bab4af0e5e81494b09be81
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ItsAshrafSyed/rust-plays already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking ItsAshrafSyed/rust-plays against try#9961e55b3687a6d0b2bab4af0e5e81494b09be81 for pr-139087-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FItsAshrafSyed%2Frust-plays" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ItsAshrafSyed/rust-plays
[INFO] finished tweaking git repo https://github.com/ItsAshrafSyed/rust-plays
[INFO] tweaked toml for git repo https://github.com/ItsAshrafSyed/rust-plays written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ItsAshrafSyed/rust-plays on toolchain 9961e55b3687a6d0b2bab4af0e5e81494b09be81
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ItsAshrafSyed/rust-plays already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1258f8625dc80eaf5810dd9fcf9256e7676a8e845d05c6db020652596b4d099f
[INFO] running `Command { std: "docker" "start" "-a" "1258f8625dc80eaf5810dd9fcf9256e7676a8e845d05c6db020652596b4d099f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1258f8625dc80eaf5810dd9fcf9256e7676a8e845d05c6db020652596b4d099f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1258f8625dc80eaf5810dd9fcf9256e7676a8e845d05c6db020652596b4d099f", kill_on_drop: false }`
[INFO] [stdout] 1258f8625dc80eaf5810dd9fcf9256e7676a8e845d05c6db020652596b4d099f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 466d696149f6426266146af21382248c890ca80354dd2fac1986d740ab6f04ef
[INFO] running `Command { std: "docker" "start" "-a" "466d696149f6426266146af21382248c890ca80354dd2fac1986d740ab6f04ef", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_plays v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: macro expansion ignores `{` and any tokens following
[INFO] [stdout]  --> /rustc/9961e55b3687a6d0b2bab4af0e5e81494b09be81/library/std/src/macros.rs:142:22
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/structs.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     println!("--- Struct and Impl ---");
[INFO] [stdout]   |     ----------------------------------- caused by the macro expansion here
[INFO] [stdout]   |
[INFO] [stdout]   = note: the usage of `println!` is likely invalid in impl item context
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro expansion ignores `{` and any tokens following
[INFO] [stdout]  --> /rustc/9961e55b3687a6d0b2bab4af0e5e81494b09be81/library/std/src/macros.rs:142:22
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/structs.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     println!("--- Struct and Impl ---");
[INFO] [stdout]   |     ----------------------------------- caused by the macro expansion here
[INFO] [stdout]   |
[INFO] [stdout]   = note: the usage of `println!` is likely invalid in impl item context
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/loops.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut count = 0;
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/loops.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut count = 0;
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]  --> src/loops.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut count = 0;
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]  --> src/loops.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut count = 0;
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_plays` (bin "rust_plays") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust_plays` (bin "rust_plays" test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "466d696149f6426266146af21382248c890ca80354dd2fac1986d740ab6f04ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "466d696149f6426266146af21382248c890ca80354dd2fac1986d740ab6f04ef", kill_on_drop: false }`
[INFO] [stdout] 466d696149f6426266146af21382248c890ca80354dd2fac1986d740ab6f04ef