[INFO] cloning repository https://github.com/zec/gradient-tool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zec/gradient-tool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzec%2Fgradient-tool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzec%2Fgradient-tool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c680567314158dedc1abbcbb32f1889f68490e0
[INFO] checking zec/gradient-tool against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzec%2Fgradient-tool" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zec/gradient-tool on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zec/gradient-tool
[INFO] finished tweaking git repo https://github.com/zec/gradient-tool
[INFO] tweaked toml for git repo https://github.com/zec/gradient-tool written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/zec/gradient-tool already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tinyfiledialogs v3.3.10
[INFO] [stderr]   Downloaded webview-sys v0.6.2
[INFO] [stderr]   Downloaded web-view v0.7.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] a75c2f7b39c1421561865299103e5ed1e8d2108d03bb8f0707a475244c1dba34
[INFO] running `Command { std: "docker" "start" "-a" "a75c2f7b39c1421561865299103e5ed1e8d2108d03bb8f0707a475244c1dba34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a75c2f7b39c1421561865299103e5ed1e8d2108d03bb8f0707a475244c1dba34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a75c2f7b39c1421561865299103e5ed1e8d2108d03bb8f0707a475244c1dba34", kill_on_drop: false }`
[INFO] [stdout] a75c2f7b39c1421561865299103e5ed1e8d2108d03bb8f0707a475244c1dba34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37f5dcfe7432278309d3052153d51395e6b9998c832508603faa307a83f2d964
[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" "37f5dcfe7432278309d3052153d51395e6b9998c832508603faa307a83f2d964", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]     Checking urlencoding v1.1.1
[INFO] [stderr]     Checking boxfnonce v0.1.1
[INFO] [stderr]     Checking webbrowser v0.5.5
[INFO] [stderr]    Compiling webkit2gtk-sys v0.12.0
[INFO] [stderr]    Compiling webview-sys v0.6.2
[INFO] [stderr]    Compiling tinyfiledialogs v3.3.10
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking javascriptcore-rs-sys v0.2.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling system-deps v1.3.2
[INFO] [stderr]    Compiling glib-sys v0.10.1
[INFO] [stderr]    Compiling gobject-sys v0.10.0
[INFO] [stderr]    Compiling gio-sys v0.10.1
[INFO] [stderr]    Compiling pango-sys v0.10.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.10.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.10.0
[INFO] [stderr]    Compiling atk-sys v0.10.0
[INFO] [stderr]    Compiling gdk-sys v0.10.0
[INFO] [stderr]    Compiling gtk-sys v0.10.0
[INFO] [stderr]    Compiling soup-sys v0.10.0
[INFO] [stderr]     Checking web-view v0.7.3
[INFO] [stderr]     Checking gradient-tool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.59s
[INFO] running `Command { std: "docker" "inspect" "37f5dcfe7432278309d3052153d51395e6b9998c832508603faa307a83f2d964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37f5dcfe7432278309d3052153d51395e6b9998c832508603faa307a83f2d964", kill_on_drop: false }`
[INFO] [stdout] 37f5dcfe7432278309d3052153d51395e6b9998c832508603faa307a83f2d964