[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 beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaze%2Flightspeed" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/haze/lightspeed on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", 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-1/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" "+beta" "fetch" "--locked" "--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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] ba49075133897d4ae30d30c82d465a47dcf7e02e8d16b82583786cc4db9a8502
[INFO] running `Command { std: "docker" "start" "-a" "ba49075133897d4ae30d30c82d465a47dcf7e02e8d16b82583786cc4db9a8502", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba49075133897d4ae30d30c82d465a47dcf7e02e8d16b82583786cc4db9a8502", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba49075133897d4ae30d30c82d465a47dcf7e02e8d16b82583786cc4db9a8502", kill_on_drop: false }`
[INFO] [stdout] ba49075133897d4ae30d30c82d465a47dcf7e02e8d16b82583786cc4db9a8502
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df495d5b6bb8e774e9e890b88d914dd8b67ca4ebecfe24bbb07352a1eaa45ea4
[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" "df495d5b6bb8e774e9e890b88d914dd8b67ca4ebecfe24bbb07352a1eaa45ea4", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]    Compiling bindgen v0.50.1
[INFO] [stderr]    Compiling metrics v0.12.1
[INFO] [stderr]    Compiling curl v0.4.28
[INFO] [stderr]     Checking metrics-core v0.5.2
[INFO] [stderr]    Compiling isahc v0.8.2
[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.3
[INFO] [stderr]    Compiling curl-sys v0.4.30+curl-7.69.1
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]     Checking async-task v1.3.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.34
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]     Checking libz-sys v1.0.25
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling regex v1.3.5
[INFO] [stderr]    Compiling backtrace v0.3.45
[INFO] [stderr]     Checking dawn-command-parser v0.1.0 (https://github.com/haze/dawn.git?branch=master#3c0d0d27)
[INFO] [stderr]     Checking openssl v0.10.28
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]    Compiling failure v0.1.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]     Checking native-tls v0.2.4
[INFO] [stderr]     Checking tungstenite v0.10.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling serde_repr v0.1.5
[INFO] [stderr]    Compiling async-trait v0.1.24
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]    Compiling leptonica-sys v0.2.1
[INFO] [stderr]    Compiling tesseract-sys v0.4.1
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking sluice v0.5.2
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking tokio-tungstenite v0.10.1 (https://github.com/snapview/tokio-tungstenite.git#1a2a99a7)
[INFO] [stderr]     Checking h2 v0.2.2
[INFO] [stderr]     Checking http-client v1.1.1
[INFO] [stderr]     Checking hyper v0.13.3
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde-value v0.6.0
[INFO] [stderr]     Checking serde-mappable-seq v0.1.0
[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 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: 2 warnings emitted
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 59s
[INFO] running `Command { std: "docker" "inspect" "df495d5b6bb8e774e9e890b88d914dd8b67ca4ebecfe24bbb07352a1eaa45ea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df495d5b6bb8e774e9e890b88d914dd8b67ca4ebecfe24bbb07352a1eaa45ea4", kill_on_drop: false }`
[INFO] [stdout] df495d5b6bb8e774e9e890b88d914dd8b67ca4ebecfe24bbb07352a1eaa45ea4