[INFO] cloning repository https://github.com/jschappel/Flax
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jschappel/Flax" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjschappel%2FFlax", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjschappel%2FFlax'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd3663632a3eeab7db41d1dbec8c92d9d2952d74
[INFO] checking jschappel/Flax against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjschappel%2FFlax" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jschappel/Flax on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jschappel/Flax
[INFO] finished tweaking git repo https://github.com/jschappel/Flax
[INFO] tweaked toml for git repo https://github.com/jschappel/Flax written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/jschappel/Flax already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d3f17492e5af25f8b660a58eca2d13afb3aaa128a2fea5d7775fc6b716753fbf
[INFO] running `Command { std: "docker" "start" "-a" "d3f17492e5af25f8b660a58eca2d13afb3aaa128a2fea5d7775fc6b716753fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3f17492e5af25f8b660a58eca2d13afb3aaa128a2fea5d7775fc6b716753fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3f17492e5af25f8b660a58eca2d13afb3aaa128a2fea5d7775fc6b716753fbf", kill_on_drop: false }`
[INFO] [stdout] d3f17492e5af25f8b660a58eca2d13afb3aaa128a2fea5d7775fc6b716753fbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1667ae58d20f7a4a295be9091a14c2d6f38f10dab3bdab099086c23e887c3d5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a1667ae58d20f7a4a295be9091a14c2d6f38f10dab3bdab099086c23e887c3d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking basic_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]   --> src/callable.rs:85:93
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn call(&self, interpreter: &mut Interpreter, args: Vec<Value>, _env: &mut Environment, line: u64) -> Result<Value, RuntimeError> {
[INFO] [stdout]    |                                                                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]   --> src/callable.rs:85:93
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn call(&self, interpreter: &mut Interpreter, args: Vec<Value>, _env: &mut Environment, line: u64) -> Result<Value, RuntimeError> {
[INFO] [stdout]    |                                                                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.70s
[INFO] running `Command { std: "docker" "inspect" "a1667ae58d20f7a4a295be9091a14c2d6f38f10dab3bdab099086c23e887c3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1667ae58d20f7a4a295be9091a14c2d6f38f10dab3bdab099086c23e887c3d5", kill_on_drop: false }`
[INFO] [stdout] a1667ae58d20f7a4a295be9091a14c2d6f38f10dab3bdab099086c23e887c3d5