[INFO] cloning repository https://github.com/nico-abram/rusty-boy-advance
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nico-abram/rusty-boy-advance" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnico-abram%2Frusty-boy-advance", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnico-abram%2Frusty-boy-advance'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3794efa4303ddef1d1dce0b9951f3631df88df71
[INFO] testing nico-abram/rusty-boy-advance against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnico-abram%2Frusty-boy-advance" "/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/nico-abram/rusty-boy-advance on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/.cargo/config
[INFO] started tweaking git repo https://github.com/nico-abram/rusty-boy-advance
[INFO] finished tweaking git repo https://github.com/nico-abram/rusty-boy-advance
[INFO] tweaked toml for git repo https://github.com/nico-abram/rusty-boy-advance written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/nico-abram/rusty-boy-advance already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 856986d45301bf935fbcafc0ae574cddc53ef6b6adea8833dad72cb4c415db26
[INFO] running `Command { std: "docker" "start" "-a" "856986d45301bf935fbcafc0ae574cddc53ef6b6adea8833dad72cb4c415db26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "856986d45301bf935fbcafc0ae574cddc53ef6b6adea8833dad72cb4c415db26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "856986d45301bf935fbcafc0ae574cddc53ef6b6adea8833dad72cb4c415db26", kill_on_drop: false }`
[INFO] [stdout] 856986d45301bf935fbcafc0ae574cddc53ef6b6adea8833dad72cb4c415db26
[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=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec5f37514221d1f3871392baa2e5789a9f08150481fe9b14200b4de09a7cba03
[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" "ec5f37514221d1f3871392baa2e5789a9f08150481fe9b14200b4de09a7cba03", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling takeable-option v0.4.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling fermium v0.1.4
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling slotmap v0.3.0
[INFO] [stderr]    Compiling rusty-boy-advance v0.0.4 (/opt/rustwide/workdir/rusty-boy-advance)
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling immi v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> rusty-boy-advance/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> rusty-boy-advance/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> rusty-boy-advance/src/gba/gba.rs:755:42
[INFO] [stdout]     |
[INFO] [stdout] 755 |         const SCREEN_Y_TILE_COUNT: u32 = ((VIDEO_HEIGHT as u32) / TILE_HEIGHT);
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> rusty-boy-advance/src/gba/gba.rs:756:42
[INFO] [stdout]     |
[INFO] [stdout] 756 |         const SCREEN_X_TILE_COUNT: u32 = ((VIDEO_WIDTH as u32) / TILE_WIDTH);
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-boy-advance` due to 3 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ec5f37514221d1f3871392baa2e5789a9f08150481fe9b14200b4de09a7cba03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec5f37514221d1f3871392baa2e5789a9f08150481fe9b14200b4de09a7cba03", kill_on_drop: false }`
[INFO] [stdout] ec5f37514221d1f3871392baa2e5789a9f08150481fe9b14200b4de09a7cba03