[INFO] fetching crate dear_mirl_gui 3.0.0...
[INFO] testing dear_mirl_gui-3.0.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate dear_mirl_gui 3.0.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate dear_mirl_gui 3.0.0
[INFO] finished tweaking crates.io crate dear_mirl_gui 3.0.0
[INFO] tweaked toml for crates.io crate dear_mirl_gui 3.0.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dear_mirl_gui 3.0.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate dear_mirl_gui 3.0.0 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to highest Rust 1.100.0-beta.1 compatible versions
[INFO] [stderr]     Updating lock_api v0.4.13 -> v0.4.14
[INFO] [stderr]       Adding mirl v9.2.0
[INFO] [stderr]     Updating parking_lot v0.12.4 -> v0.12.5
[INFO] [stderr]     Updating parking_lot_core v0.9.11 -> v0.9.12
[INFO] [stderr]       Adding windows-link v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 373515ab26d4466e2b068c7c415dd5d464bfb16ebf68e49592b86da8f94142c0
[INFO] running `Command { std: "docker" "start" "373515ab26d4466e2b068c7c415dd5d464bfb16ebf68e49592b86da8f94142c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "373515ab26d4466e2b068c7c415dd5d464bfb16ebf68e49592b86da8f94142c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "373515ab26d4466e2b068c7c415dd5d464bfb16ebf68e49592b86da8f94142c0" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "373515ab26d4466e2b068c7c415dd5d464bfb16ebf68e49592b86da8f94142c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "373515ab26d4466e2b068c7c415dd5d464bfb16ebf68e49592b86da8f94142c0" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling zerocopy v0.8.31
[INFO] [stderr]    Compiling libloading v0.8.8
[INFO] [stderr]    Compiling cc v1.2.32
[INFO] [stderr]    Compiling yeslogic-fontconfig-sys v3.2.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling font-kit v0.11.0
[INFO] [stderr]    Compiling dlib v0.5.2
[INFO] [stderr]    Compiling const-cstr v0.3.0
[INFO] [stderr]    Compiling mirl v9.2.0
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling ttf-parser v0.21.1
[INFO] [stderr] error: failed to run custom build command for `mirl v9.2.0`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/release/build/mirl/8a19033bf886cc51/out/build_script_build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   ╔═══════════════════════════════════════════════════════════════╗
[INFO] [stderr]   ║                       NIGHTLY  REQUIRED                       ║
[INFO] [stderr]   ╠═══════════════════════════════════════════════════════════════╣
[INFO] [stderr]   ║ `Mirl` requires Rust nightly to compile.                      ║
[INFO] [stderr]   ║                                                               ║
[INFO] [stderr]   ║ To install and use nightly:                                   ║
[INFO] [stderr]   ║                                                               ║
[INFO] [stderr]   ║ 1. Install nightly toolchain:                                 ║
[INFO] [stderr]   ║    `rustup install nightly`                                   ║
[INFO] [stderr]   ║                                                               ║
[INFO] [stderr]   ║ 2. Use nightly for this project (recommended):                ║
[INFO] [stderr]   ║    `rustup override set nightly`                              ║
[INFO] [stderr]   ║                                                               ║
[INFO] [stderr]   ║ Or use nightly for a single build:                            ║
[INFO] [stderr]   ║    `cargo +nightly build`                                     ║
[INFO] [stderr]   ╚═══════════════════════════════════════════════════════════════╝
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "373515ab26d4466e2b068c7c415dd5d464bfb16ebf68e49592b86da8f94142c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "373515ab26d4466e2b068c7c415dd5d464bfb16ebf68e49592b86da8f94142c0", kill_on_drop: false }`
[INFO] [stdout] 373515ab26d4466e2b068c7c415dd5d464bfb16ebf68e49592b86da8f94142c0
