[INFO] cloning repository https://github.com/nrchandan/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nrchandan/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrchandan%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrchandan%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 24e0686cfb405effb0036e05bb952c433c73a6c3
[INFO] checking nrchandan/learn-rust against try#5fee451ebd94296ea05214e819c311e164b30af6 for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrchandan%2Flearn-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nrchandan/learn-rust on toolchain 5fee451ebd94296ea05214e819c311e164b30af6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nrchandan/learn-rust
[INFO] finished tweaking git repo https://github.com/nrchandan/learn-rust
[INFO] tweaked toml for git repo https://github.com/nrchandan/learn-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nrchandan/learn-rust 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" "+5fee451ebd94296ea05214e819c311e164b30af6" "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 nrchandan/learn-rust against try#5fee451ebd94296ea05214e819c311e164b30af6 for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrchandan%2Flearn-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nrchandan/learn-rust on toolchain 5fee451ebd94296ea05214e819c311e164b30af6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nrchandan/learn-rust
[INFO] finished tweaking git repo https://github.com/nrchandan/learn-rust
[INFO] tweaked toml for git repo https://github.com/nrchandan/learn-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nrchandan/learn-rust 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" "+5fee451ebd94296ea05214e819c311e164b30af6" "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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cb1ff6db7ccba402be5a021d1bba3db6b635edaba2a3a5bf34852b78aa232e8
[INFO] running `Command { std: "docker" "start" "-a" "6cb1ff6db7ccba402be5a021d1bba3db6b635edaba2a3a5bf34852b78aa232e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cb1ff6db7ccba402be5a021d1bba3db6b635edaba2a3a5bf34852b78aa232e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cb1ff6db7ccba402be5a021d1bba3db6b635edaba2a3a5bf34852b78aa232e8", kill_on_drop: false }`
[INFO] [stdout] 6cb1ff6db7ccba402be5a021d1bba3db6b635edaba2a3a5bf34852b78aa232e8
[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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8aceda893e95f655a61563b6033b48b8d66ddb5645ffad5173c53ceb73799015
[INFO] running `Command { std: "docker" "start" "-a" "8aceda893e95f655a61563b6033b48b8d66ddb5645ffad5173c53ceb73799015", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking getrandom v0.2.3
[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 guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `content`, `reply`, and `retweet` are never read
[INFO] [stdout]  --> src/tweet.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Tweet {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 4 |     pub username: String,
[INFO] [stdout] 5 |     pub content: String,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 6 |     pub reply: bool,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 7 |     pub retweet: bool
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `content`, `reply`, and `retweet` are never read
[INFO] [stdout]  --> src/tweet.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Tweet {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 4 |     pub username: String,
[INFO] [stdout] 5 |     pub content: String,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 6 |     pub reply: bool,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 7 |     pub retweet: bool
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "8aceda893e95f655a61563b6033b48b8d66ddb5645ffad5173c53ceb73799015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8aceda893e95f655a61563b6033b48b8d66ddb5645ffad5173c53ceb73799015", kill_on_drop: false }`
[INFO] [stdout] 8aceda893e95f655a61563b6033b48b8d66ddb5645ffad5173c53ceb73799015