[INFO] cloning repository https://github.com/bobjen/bigfloat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bobjen/bigfloat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbobjen%2Fbigfloat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbobjen%2Fbigfloat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d48985de899294801963cf967cadefe835042f19
[INFO] checking bobjen/bigfloat against try#8e819ff5434466e9a823e03871a1775ac7d84ddf for pr-156027
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbobjen%2Fbigfloat" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bobjen/bigfloat
[INFO] finished tweaking git repo https://github.com/bobjen/bigfloat
[INFO] tweaked toml for git repo https://github.com/bobjen/bigfloat written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bobjen/bigfloat on toolchain 8e819ff5434466e9a823e03871a1775ac7d84ddf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bobjen/bigfloat 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" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "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 bobjen/bigfloat against try#8e819ff5434466e9a823e03871a1775ac7d84ddf for pr-156027
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbobjen%2Fbigfloat" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bobjen/bigfloat
[INFO] finished tweaking git repo https://github.com/bobjen/bigfloat
[INFO] tweaked toml for git repo https://github.com/bobjen/bigfloat written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bobjen/bigfloat on toolchain 8e819ff5434466e9a823e03871a1775ac7d84ddf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bobjen/bigfloat 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" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ec98af5deadc8c28681a225e7f0676dd63d27faba30d863cb55bcab9d04091b
[INFO] running `Command { std: "docker" "start" "-a" "3ec98af5deadc8c28681a225e7f0676dd63d27faba30d863cb55bcab9d04091b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ec98af5deadc8c28681a225e7f0676dd63d27faba30d863cb55bcab9d04091b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ec98af5deadc8c28681a225e7f0676dd63d27faba30d863cb55bcab9d04091b", kill_on_drop: false }`
[INFO] [stdout] 3ec98af5deadc8c28681a225e7f0676dd63d27faba30d863cb55bcab9d04091b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efbd5cd2c54f2b535d63a28474f24ba00eb1917baea5c4dfbbae7d58cea7384f
[INFO] running `Command { std: "docker" "start" "-a" "efbd5cd2c54f2b535d63a28474f24ba00eb1917baea5c4dfbbae7d58cea7384f", kill_on_drop: false }`
[INFO] [stderr]     Checking bigfloat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1171:13
[INFO] [stdout]      |
[INFO] [stdout] 1171 |         let mut denominator = -2i64 * root as i64;
[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: `n`
[INFO] [stdout]     --> src/lib.rs:1792:33
[INFO] [stdout]      |
[INFO] [stdout] 1792 |     pub fn power_int(&mut self, n: i64, exponent: i64) -> &mut Self {
[INFO] [stdout]      |                                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exponent`
[INFO] [stdout]     --> src/lib.rs:1792:41
[INFO] [stdout]      |
[INFO] [stdout] 1792 |     pub fn power_int(&mut self, n: i64, exponent: i64) -> &mut Self {
[INFO] [stdout]      |                                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exponent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pi_over_four` is never read
[INFO] [stdout]     --> src/lib.rs:2347:5
[INFO] [stdout]      |
[INFO] [stdout] 2336 | struct Cache {
[INFO] [stdout]      |        ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 2347 |     pi_over_four: BigFloat,
[INFO] [stdout]      |     ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1171:13
[INFO] [stdout]      |
[INFO] [stdout] 1171 |         let mut denominator = -2i64 * root as i64;
[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: `n`
[INFO] [stdout]     --> src/lib.rs:1792:33
[INFO] [stdout]      |
[INFO] [stdout] 1792 |     pub fn power_int(&mut self, n: i64, exponent: i64) -> &mut Self {
[INFO] [stdout]      |                                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exponent`
[INFO] [stdout]     --> src/lib.rs:1792:41
[INFO] [stdout]      |
[INFO] [stdout] 1792 |     pub fn power_int(&mut self, n: i64, exponent: i64) -> &mut Self {
[INFO] [stdout]      |                                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exponent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pi_over_four` is never read
[INFO] [stdout]     --> src/lib.rs:2347:5
[INFO] [stdout]      |
[INFO] [stdout] 2336 | struct Cache {
[INFO] [stdout]      |        ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 2347 |     pi_over_four: BigFloat,
[INFO] [stdout]      |     ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "efbd5cd2c54f2b535d63a28474f24ba00eb1917baea5c4dfbbae7d58cea7384f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efbd5cd2c54f2b535d63a28474f24ba00eb1917baea5c4dfbbae7d58cea7384f", kill_on_drop: false }`
[INFO] [stdout] efbd5cd2c54f2b535d63a28474f24ba00eb1917baea5c4dfbbae7d58cea7384f
