[INFO] cloning repository https://github.com/glennw/wr-sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/glennw/wr-sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglennw%2Fwr-sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglennw%2Fwr-sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 431dde003bba3662288f42f72859f1631c3c906a
[INFO] checking glennw/wr-sample against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglennw%2Fwr-sample" "/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/glennw/wr-sample on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/glennw/wr-sample
[INFO] finished tweaking git repo https://github.com/glennw/wr-sample
[INFO] tweaked toml for git repo https://github.com/glennw/wr-sample written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] crate git repo https://github.com/glennw/wr-sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/servo/webrender`
[INFO] [stderr]     Updating git repository `https://github.com/servo/rust-freetype`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_codegen_internals v0.10.0
[INFO] [stderr]   Downloaded gleam v0.2.22
[INFO] [stderr]   Downloaded post-expansion v0.1.0
[INFO] [stderr]   Downloaded syn v0.9.2
[INFO] [stderr]   Downloaded euclid v0.10.2
[INFO] [stderr]   Downloaded app_units v0.3.0
[INFO] [stderr]   Downloaded rayon v0.4.3
[INFO] [stderr]   Downloaded core-text v2.0.0
[INFO] [stderr]   Downloaded bincode v0.6.0
[INFO] [stderr]   Downloaded quote v0.3.5
[INFO] [stderr]   Downloaded serde v0.8.16
[INFO] [stderr]   Downloaded ipc-channel v0.5.1
[INFO] [stderr]   Downloaded syntex_errors v0.46.0
[INFO] [stderr]   Downloaded syntex_pos v0.46.0
[INFO] [stderr]   Downloaded phf v0.7.18
[INFO] [stderr]   Downloaded phf_codegen v0.7.18
[INFO] [stderr]   Downloaded phf_shared v0.7.18
[INFO] [stderr]   Downloaded heapsize v0.3.7
[INFO] [stderr]   Downloaded syntex v0.46.0
[INFO] [stderr]   Downloaded phf_generator v0.7.18
[INFO] [stderr]   Downloaded syntex_syntax v0.46.0
[INFO] [stderr]   Downloaded offscreen_gl_context v0.4.5
[INFO] [stderr]   Downloaded x11 v2.11.0
[INFO] [stderr]   Downloaded serde_codegen v0.8.16
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8be076cbc8091750ff60bab891fefc7430530eeac80580b7e3562ea9f2e869a6
[INFO] running `Command { std: "docker" "start" "-a" "8be076cbc8091750ff60bab891fefc7430530eeac80580b7e3562ea9f2e869a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8be076cbc8091750ff60bab891fefc7430530eeac80580b7e3562ea9f2e869a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8be076cbc8091750ff60bab891fefc7430530eeac80580b7e3562ea9f2e869a6", kill_on_drop: false }`
[INFO] [stdout] 8be076cbc8091750ff60bab891fefc7430530eeac80580b7e3562ea9f2e869a6
[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=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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e674805f3db7a713a5900b199a7c71a67152e0a8bf00e2f64ebef67e8029006a
[INFO] running `Command { std: "docker" "start" "-a" "e674805f3db7a713a5900b199a7c71a67152e0a8bf00e2f64ebef67e8029006a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: failed to create jobserver
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to increase jobserver pipe capacity from 4096 to 8192; jobserver otherwise might deadlock
[INFO] running `Command { std: "docker" "inspect" "e674805f3db7a713a5900b199a7c71a67152e0a8bf00e2f64ebef67e8029006a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e674805f3db7a713a5900b199a7c71a67152e0a8bf00e2f64ebef67e8029006a", kill_on_drop: false }`
[INFO] [stdout] e674805f3db7a713a5900b199a7c71a67152e0a8bf00e2f64ebef67e8029006a