[INFO] cloning repository https://github.com/C-Loftus/Linux-CPU-RAM-notifier
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/C-Loftus/Linux-CPU-RAM-notifier" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FC-Loftus%2FLinux-CPU-RAM-notifier", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FC-Loftus%2FLinux-CPU-RAM-notifier'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2bb2f557bf3ed7074379f07e19522795af6c599
[INFO] checking C-Loftus/Linux-CPU-RAM-notifier against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FC-Loftus%2FLinux-CPU-RAM-notifier" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/C-Loftus/Linux-CPU-RAM-notifier on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/C-Loftus/Linux-CPU-RAM-notifier
[INFO] finished tweaking git repo https://github.com/C-Loftus/Linux-CPU-RAM-notifier
[INFO] tweaked toml for git repo https://github.com/C-Loftus/Linux-CPU-RAM-notifier written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/C-Loftus/Linux-CPU-RAM-notifier 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] Updating crates.io index
[INFO] [stderr] Downloading crates ...
[INFO] [stderr] Downloaded systemstat v0.1.7
[INFO] [stderr] Downloaded gdk-pixbuf-sys v0.5.0
[INFO] [stderr] Downloaded glib-sys v0.5.0
[INFO] [stderr] Downloaded gobject-sys v0.5.0
[INFO] [stderr] Downloaded libnotify-sys v1.0.2
[INFO] [stderr] Downloaded libnotify v1.0.3
[INFO] [stderr] Downloaded gdk-pixbuf v0.3.0
[INFO] [stderr] Downloaded gio-sys v0.5.0
[INFO] [stderr] Downloaded bytesize v1.0.1
[INFO] [stderr] Downloaded glib v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6dd32672a211571b21e2a383888722fc1431ea30009e7cd6a84076b12163582b
[INFO] running `Command { std: "docker" "start" "-a" "6dd32672a211571b21e2a383888722fc1431ea30009e7cd6a84076b12163582b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dd32672a211571b21e2a383888722fc1431ea30009e7cd6a84076b12163582b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dd32672a211571b21e2a383888722fc1431ea30009e7cd6a84076b12163582b", kill_on_drop: false }`
[INFO] [stdout] 6dd32672a211571b21e2a383888722fc1431ea30009e7cd6a84076b12163582b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 808b5e072d0852b90e10c5fb012246153688ee877baa2169130c1bca0455f9b5
[INFO] running `Command { std: "docker" "start" "-a" "808b5e072d0852b90e10c5fb012246153688ee877baa2169130c1bca0455f9b5", kill_on_drop: false }`
[INFO] [stderr] Compiling glib-sys v0.5.0
[INFO] [stderr] Compiling libc v0.2.94
[INFO] [stderr] Compiling gobject-sys v0.5.0
[INFO] [stderr] Compiling gio-sys v0.5.0
[INFO] [stderr] Compiling gdk-pixbuf-sys v0.5.0
[INFO] [stderr] Compiling radium v0.5.3
[INFO] [stderr] Compiling lexical-core v0.7.6
[INFO] [stderr] Compiling memchr v2.3.4
[INFO] [stderr] Compiling libnotify-sys v1.0.2
[INFO] [stderr] Compiling gdk-pixbuf v0.3.0
[INFO] [stderr] Compiling nom v6.1.2
[INFO] [stderr] Checking arrayvec v0.5.2
[INFO] [stderr] Checking bytesize v1.0.1
[INFO] [stderr] Checking num-integer v0.1.44
[INFO] [stderr] Checking bitvec v0.19.5
[INFO] [stderr] Checking time v0.1.44
[INFO] [stderr] Checking chrono v0.4.19
[INFO] [stderr] Checking glib v0.4.1
[INFO] [stderr] Checking libnotify v1.0.3
[INFO] [stderr] Checking systemstat v0.1.7
[INFO] [stderr] Checking gnome_notif v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `Option<&str>: From