[INFO] cloning repository https://github.com/gen0x39/gba-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gen0x39/gba-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgen0x39%2Fgba-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgen0x39%2Fgba-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b77472582ce8f1100f224a03e3801d2014dd170c
[INFO] testing gen0x39/gba-engine against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgen0x39%2Fgba-engine" "/workspace/builds/worker-33/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-33/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gen0x39/gba-engine 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/gen0x39/gba-engine
[INFO] finished tweaking git repo https://github.com/gen0x39/gba-engine
[INFO] tweaked toml for git repo https://github.com/gen0x39/gba-engine written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate git repo https://github.com/gen0x39/gba-engine 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 linked_list_allocator v0.8.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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] cf47f38c4e1287ff88e8bc73973053f6fcbb83fa864527151fba5c668a311bfa
[INFO] running `Command { std: "docker" "start" "-a" "cf47f38c4e1287ff88e8bc73973053f6fcbb83fa864527151fba5c668a311bfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf47f38c4e1287ff88e8bc73973053f6fcbb83fa864527151fba5c668a311bfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf47f38c4e1287ff88e8bc73973053f6fcbb83fa864527151fba5c668a311bfa", kill_on_drop: false }`
[INFO] [stdout] cf47f38c4e1287ff88e8bc73973053f6fcbb83fa864527151fba5c668a311bfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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] e36a41aea4a7c91ae529f1906054a8b0338329136df517d9556d7d6fffd932d6
[INFO] running `Command { std: "docker" "start" "-a" "e36a41aea4a7c91ae529f1906054a8b0338329136df517d9556d7d6fffd932d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling linked_list_allocator v0.8.6
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.8.6/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_mut_refs)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `linked_list_allocator` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e36a41aea4a7c91ae529f1906054a8b0338329136df517d9556d7d6fffd932d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e36a41aea4a7c91ae529f1906054a8b0338329136df517d9556d7d6fffd932d6", kill_on_drop: false }`
[INFO] [stdout] e36a41aea4a7c91ae529f1906054a8b0338329136df517d9556d7d6fffd932d6