[INFO] cloning repository https://github.com/vpetrigo/miniloop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vpetrigo/miniloop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvpetrigo%2Fminiloop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvpetrigo%2Fminiloop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e08e784de62a563d3782dbf429af6951dc67e81
[INFO] checking vpetrigo/miniloop against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvpetrigo%2Fminiloop" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vpetrigo/miniloop
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/vpetrigo/miniloop
[INFO] tweaked toml for git repo https://github.com/vpetrigo/miniloop written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vpetrigo/miniloop on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4c9028f6726d4bb1a3ebf377fc7d5bd55d13dcb5c67c7477abca0e9eb1d8881
[INFO] running `Command { std: "docker" "start" "-a" "d4c9028f6726d4bb1a3ebf377fc7d5bd55d13dcb5c67c7477abca0e9eb1d8881", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4c9028f6726d4bb1a3ebf377fc7d5bd55d13dcb5c67c7477abca0e9eb1d8881", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4c9028f6726d4bb1a3ebf377fc7d5bd55d13dcb5c67c7477abca0e9eb1d8881", kill_on_drop: false }`
[INFO] [stdout] d4c9028f6726d4bb1a3ebf377fc7d5bd55d13dcb5c67c7477abca0e9eb1d8881
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a961b319f79a081a33f0f685fdeabe1cd240dcb42a578f78820ff6419527e22
[INFO] running `Command { std: "docker" "start" "-a" "2a961b319f79a081a33f0f685fdeabe1cd240dcb42a578f78820ff6419527e22", kill_on_drop: false }`
[INFO] [stderr]    Compiling miniloop v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/executor.rs:145:38
[INFO] [stdout]     |
[INFO] [stdout] 145 |     pub fn block_on<F, T>(&mut self, mut future: F) -> T
[INFO] [stdout]     |                                      ----^^^^^^
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/executor.rs:145:38
[INFO] [stdout]     |
[INFO] [stdout] 145 |     pub fn block_on<F, T>(&mut self, mut future: F) -> T
[INFO] [stdout]     |                                      ----^^^^^^
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "2a961b319f79a081a33f0f685fdeabe1cd240dcb42a578f78820ff6419527e22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a961b319f79a081a33f0f685fdeabe1cd240dcb42a578f78820ff6419527e22", kill_on_drop: false }`
[INFO] [stdout] 2a961b319f79a081a33f0f685fdeabe1cd240dcb42a578f78820ff6419527e22