[INFO] cloning repository https://github.com/dtomvan/dmenu_drun
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dtomvan/dmenu_drun" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtomvan%2Fdmenu_drun", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtomvan%2Fdmenu_drun'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a67306e885f335bc7b0c81e6af4242f5be1a3b46
[INFO] testing dtomvan/dmenu_drun against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtomvan%2Fdmenu_drun" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dtomvan/dmenu_drun on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dtomvan/dmenu_drun
[INFO] finished tweaking git repo https://github.com/dtomvan/dmenu_drun
[INFO] tweaked toml for git repo https://github.com/dtomvan/dmenu_drun written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/dtomvan/dmenu_drun already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dirs v4.0.0
[INFO] [stderr]   Downloaded redox_syscall v0.2.10
[INFO] [stderr]   Downloaded wasi v0.10.2+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded bitflags v1.3.2
[INFO] [stderr]   Downloaded getrandom v0.2.3
[INFO] [stderr]   Downloaded either v1.6.1
[INFO] [stderr]   Downloaded fork v0.1.18
[INFO] [stderr]   Downloaded dirs-sys v0.3.6
[INFO] [stderr]   Downloaded redox_users v0.4.0
[INFO] [stderr]   Downloaded itertools v0.10.3
[INFO] [stderr]   Downloaded libc v0.2.112
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8db64186605c115c5ea6042037049dbeddebd1ea7c8cbd459c6d38f10c0b23a2
[INFO] running `Command { std: "docker" "start" "-a" "8db64186605c115c5ea6042037049dbeddebd1ea7c8cbd459c6d38f10c0b23a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8db64186605c115c5ea6042037049dbeddebd1ea7c8cbd459c6d38f10c0b23a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8db64186605c115c5ea6042037049dbeddebd1ea7c8cbd459c6d38f10c0b23a2", kill_on_drop: false }`
[INFO] [stdout] 8db64186605c115c5ea6042037049dbeddebd1ea7c8cbd459c6d38f10c0b23a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f65235e67f725bc7d756cc98d62e8d8bb46188c6bb3bfda12fc5e52ad4d9e027
[INFO] running `Command { std: "docker" "start" "-a" "f65235e67f725bc7d756cc98d62e8d8bb46188c6bb3bfda12fc5e52ad4d9e027", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling fork v0.1.18
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling dirs v4.0.0
[INFO] [stderr]    Compiling dmenu_drun v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_result_contains)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(hash_drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dmenu_drun` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "f65235e67f725bc7d756cc98d62e8d8bb46188c6bb3bfda12fc5e52ad4d9e027", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f65235e67f725bc7d756cc98d62e8d8bb46188c6bb3bfda12fc5e52ad4d9e027", kill_on_drop: false }`
[INFO] [stdout] f65235e67f725bc7d756cc98d62e8d8bb46188c6bb3bfda12fc5e52ad4d9e027