[INFO] cloning repository https://github.com/haze/lightspeed
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/haze/lightspeed" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaze%2Flightspeed", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaze%2Flightspeed'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 83f47a66b4ec84140d8bc60b36181aadfb14515f
[INFO] checking haze/lightspeed against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaze%2Flightspeed" "/workspace/builds/worker-93/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-93/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/haze/lightspeed on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/haze/lightspeed
[INFO] finished tweaking git repo https://github.com/haze/lightspeed
[INFO] tweaked toml for git repo https://github.com/haze/lightspeed written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] crate git repo https://github.com/haze/lightspeed already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd20f3e65a0c849039be718539278a4f76ce5b1567e405d517df0c16f141805b
[INFO] running `Command { std: "docker" "start" "-a" "fd20f3e65a0c849039be718539278a4f76ce5b1567e405d517df0c16f141805b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd20f3e65a0c849039be718539278a4f76ce5b1567e405d517df0c16f141805b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd20f3e65a0c849039be718539278a4f76ce5b1567e405d517df0c16f141805b", kill_on_drop: false }`
[INFO] [stdout] fd20f3e65a0c849039be718539278a4f76ce5b1567e405d517df0c16f141805b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b0c644e7ef303d02df7604309dfe036007305710a441982461955b2f6475de4
[INFO] running `Command { std: "docker" "start" "-a" "6b0c644e7ef303d02df7604309dfe036007305710a441982461955b2f6475de4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]    Compiling openssl v0.10.28
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[INFO] [stderr]    Compiling libc v0.2.67
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[INFO] [stderr]    Compiling clang-sys v0.28.1
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[INFO] [stderr]    Compiling regex v1.3.5
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[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
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[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking dawn-model v0.1.0 (https://github.com/haze/dawn.git?branch=master#3c0d0d27)
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking reqwest v0.10.4
[INFO] [stderr]     Checking http-client v1.1.1
[INFO] [stderr]     Checking surf v2.0.0-alpha.0
[INFO] [stderr]     Checking dawn-http v0.1.0 (https://github.com/haze/dawn.git?branch=master#3c0d0d27)
[INFO] [stderr]     Checking dawn-cache-trait v0.1.0 (https://github.com/haze/dawn.git?branch=master#3c0d0d27)
[INFO] [stderr]     Checking dawn-gateway v0.1.0 (https://github.com/haze/dawn.git?branch=master#3c0d0d27)
[INFO] [stderr]     Checking dawn-cache-inmemory v0.1.0 (https://github.com/haze/dawn.git?branch=master#3c0d0d27)
[INFO] [stderr]     Checking dawn-cache v0.1.0 (https://github.com/haze/dawn.git?branch=master#3c0d0d27)
[INFO] [stderr]     Checking dawn v0.1.0 (https://github.com/haze/dawn.git?branch=master#3c0d0d27)
[INFO] [stderr]     Checking leptess v0.8.1
[INFO] [stderr]     Checking lightspeed v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/main.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::sync::{Arc, Mutex};
[INFO] [stdout]   |                       ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/main.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::sync::{Arc, Mutex};
[INFO] [stdout]   |                       ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MutexError`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     MutexError,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MutexError`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     MutexError,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 52s
[INFO] running `Command { std: "docker" "inspect" "6b0c644e7ef303d02df7604309dfe036007305710a441982461955b2f6475de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b0c644e7ef303d02df7604309dfe036007305710a441982461955b2f6475de4", kill_on_drop: false }`
[INFO] [stdout] 6b0c644e7ef303d02df7604309dfe036007305710a441982461955b2f6475de4
