[INFO] cloning repository https://github.com/wesley-lewis/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/wesley-lewis/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwesley-lewis%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwesley-lewis%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49f4acd5765f16535d8a94ae7ce5cb00ef292453
[INFO] checking wesley-lewis/learn-rust against try#09ea730c380b8b9acb96ff87b724c45df920f793 for pr-134272
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwesley-lewis%2Flearn-rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wesley-lewis/learn-rust on toolchain 09ea730c380b8b9acb96ff87b724c45df920f793
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09ea730c380b8b9acb96ff87b724c45df920f793" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wesley-lewis/learn-rust
[INFO] finished tweaking git repo https://github.com/wesley-lewis/learn-rust
[INFO] tweaked toml for git repo https://github.com/wesley-lewis/learn-rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/wesley-lewis/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" "+09ea730c380b8b9acb96ff87b724c45df920f793" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+09ea730c380b8b9acb96ff87b724c45df920f793" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14f894a859de38225556abd91ce55729c2bb41df78b9f9f04052c5a53572e059
[INFO] running `Command { std: "docker" "start" "-a" "14f894a859de38225556abd91ce55729c2bb41df78b9f9f04052c5a53572e059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14f894a859de38225556abd91ce55729c2bb41df78b9f9f04052c5a53572e059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14f894a859de38225556abd91ce55729c2bb41df78b9f9f04052c5a53572e059", kill_on_drop: false }`
[INFO] [stdout] 14f894a859de38225556abd91ce55729c2bb41df78b9f9f04052c5a53572e059
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+09ea730c380b8b9acb96ff87b724c45df920f793" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47764e298cfb657a65daac7735ecd92c39b97efb31cae16d3d9465b4f52e34cb
[INFO] running `Command { std: "docker" "start" "-a" "47764e298cfb657a65daac7735ecd92c39b97efb31cae16d3d9465b4f52e34cb", kill_on_drop: false }`
[INFO] [stderr]     Checking learn-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]  --> src/advanced_lifetimes.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let parser = Parser {context: &context };
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]  --> src/advanced_lifetimes.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let parser = Parser {context: &context };
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "47764e298cfb657a65daac7735ecd92c39b97efb31cae16d3d9465b4f52e34cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47764e298cfb657a65daac7735ecd92c39b97efb31cae16d3d9465b4f52e34cb", kill_on_drop: false }`
[INFO] [stdout] 47764e298cfb657a65daac7735ecd92c39b97efb31cae16d3d9465b4f52e34cb