[INFO] fetching crate screenruster-saver-laughing_man 0.2.1...
[INFO] testing screenruster-saver-laughing_man-0.2.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate screenruster-saver-laughing_man 0.2.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate screenruster-saver-laughing_man 0.2.1 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 crates.io crate screenruster-saver-laughing_man 0.2.1
[INFO] finished tweaking crates.io crate screenruster-saver-laughing_man 0.2.1
[INFO] tweaked toml for crates.io crate screenruster-saver-laughing_man 0.2.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate screenruster-saver-laughing_man 0.2.1 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]  Downloading crates ...
[INFO] [stderr]   Downloaded takeable-option v0.4.0
[INFO] [stderr]   Downloaded x11 v2.18.1
[INFO] [stderr]   Downloaded libm v0.1.4
[INFO] [stderr]   Downloaded inflate v0.1.1
[INFO] [stderr]   Downloaded nalgebra v0.19.0
[INFO] [stderr]   Downloaded gl_generator v0.11.0
[INFO] [stderr]   Downloaded matrixmultiply v0.2.3
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.0
[INFO] [stderr]   Downloaded picto v0.4.3
[INFO] [stderr]   Downloaded imagefmt v4.0.0
[INFO] [stderr]   Downloaded alga v0.9.2
[INFO] [stderr]   Downloaded approx v0.1.1
[INFO] [stderr]   Downloaded gif v0.9.2
[INFO] [stderr]   Downloaded json v0.12.0
[INFO] [stderr]   Downloaded screenruster-saver v0.2.2
[INFO] [stderr]   Downloaded xyz v0.2.1
[INFO] [stderr]   Downloaded xml-rs v0.8.0
[INFO] [stderr]   Downloaded palette v0.2.1
[INFO] [stderr]   Downloaded exoquant v0.2.0
[INFO] [stderr]   Downloaded png v0.6.2
[INFO] [stderr]   Downloaded glium v0.25.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ff051367953e42bc1a1753331108d4d9059be4d217c6738bf35791b9233d160
[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" "7ff051367953e42bc1a1753331108d4d9059be4d217c6738bf35791b9233d160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ff051367953e42bc1a1753331108d4d9059be4d217c6738bf35791b9233d160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ff051367953e42bc1a1753331108d4d9059be4d217c6738bf35791b9233d160", kill_on_drop: false }`
[INFO] [stdout] 7ff051367953e42bc1a1753331108d4d9059be4d217c6738bf35791b9233d160
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8549654944d06c69adbec6675f7af2d9697b5c30a1ff23c7c56fbdcd0b6beecf
[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" "8549654944d06c69adbec6675f7af2d9697b5c30a1ff23c7c56fbdcd0b6beecf", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling inflate v0.1.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling takeable-option v0.4.0
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling exoquant v0.2.0
[INFO] [stderr]    Compiling json v0.12.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling x11 v2.18.1
[INFO] [stderr]    Compiling gif v0.9.2
[INFO] [stderr]    Compiling matrixmultiply v0.2.3
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling gl_generator v0.11.0
[INFO] [stderr]    Compiling flate2 v0.2.20
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling imagefmt v4.0.0
[INFO] [stderr]    Compiling xyz v0.2.1
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling glium v0.25.1
[INFO] [stderr]    Compiling palette v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling alga v0.9.2
[INFO] [stderr]    Compiling rand_distr v0.2.2
[INFO] [stderr]    Compiling png v0.6.2
[INFO] [stderr]    Compiling nalgebra v0.19.0
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling jpeg-decoder v0.1.18
[INFO] [stderr]    Compiling picto v0.4.3
[INFO] [stderr]    Compiling screenruster-saver v0.2.2
[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/screenruster-saver-0.2.2/src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(type_ascription)]
[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 `screenruster-saver` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8549654944d06c69adbec6675f7af2d9697b5c30a1ff23c7c56fbdcd0b6beecf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8549654944d06c69adbec6675f7af2d9697b5c30a1ff23c7c56fbdcd0b6beecf", kill_on_drop: false }`
[INFO] [stdout] 8549654944d06c69adbec6675f7af2d9697b5c30a1ff23c7c56fbdcd0b6beecf