[INFO] cloning repository https://github.com/darkwater/patternlock
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/darkwater/patternlock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarkwater%2Fpatternlock"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarkwater%2Fpatternlock'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 537bd2738220bb6e0011a3e0c6a3541baf49150d
[INFO] testing darkwater/patternlock against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarkwater%2Fpatternlock" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/darkwater/patternlock on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/darkwater/patternlock
[INFO] finished tweaking git repo https://github.com/darkwater/patternlock
[INFO] tweaked toml for git repo https://github.com/darkwater/patternlock written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/darkwater/patternlock already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c7a066d440faa86b69e632becd0f71efc7610c74e325a68b421aa7b054228a76
[INFO] running `"docker" "start" "-a" "c7a066d440faa86b69e632becd0f71efc7610c74e325a68b421aa7b054228a76"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling khronos_api v0.0.8
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling cairo-rs v0.1.1 (https://github.com/gtk-rs/cairo.git#8be0251d)
[INFO] [stderr]    Compiling gio v0.1.1 (https://github.com/gtk-rs/gio#a7e8f44f)
[INFO] [stderr]    Compiling gdk-pixbuf v0.1.1 (https://github.com/gtk-rs/gdk-pixbuf.git#739fe928)
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling gdk v0.5.1 (https://github.com/gtk-rs/gdk.git#8b334252)
[INFO] [stderr]    Compiling adler32 v0.3.0
[INFO] [stderr]    Compiling c_vec v1.2.0
[INFO] [stderr]    Compiling bitflags v0.2.1
[INFO] [stderr]    Compiling gtk v0.1.1 (https://github.com/gtk-rs/gtk.git#7a4b9660)
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling glib-sys v0.3.2 (https://github.com/gtk-rs/sys.git#9ae84c22)
[INFO] [stderr]    Compiling gobject-sys v0.3.2 (https://github.com/gtk-rs/sys.git#9ae84c22)
[INFO] [stderr]    Compiling gio-sys v0.3.2 (https://github.com/gtk-rs/sys.git#9ae84c22)
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.3.2 (https://github.com/gtk-rs/sys.git#9ae84c22)
[INFO] [stderr]    Compiling cairo-sys-rs v0.3.2 (https://github.com/gtk-rs/cairo.git#8be0251d)
[INFO] [stderr]    Compiling pango-sys v0.3.2 (https://github.com/gtk-rs/sys.git#9ae84c22)
[INFO] [stderr]    Compiling gdk-sys v0.3.2 (https://github.com/gtk-rs/sys.git#9ae84c22)
[INFO] [stderr]    Compiling xml-rs v0.1.26
[INFO] [stderr]    Compiling atk-sys v0.3.2 (https://github.com/gtk-rs/sys.git#9ae84c22)
[INFO] [stderr]    Compiling num-integer v0.1.33
[INFO] [stderr]    Compiling gtk-sys v0.3.2 (https://github.com/gtk-rs/sys.git#9ae84c22)
[INFO] [stderr]    Compiling deflate v0.7.4
[INFO] [stderr]    Compiling gl_common v0.1.0
[INFO] [stderr]    Compiling num-iter v0.1.33
[INFO] [stderr]    Compiling num-rational v0.1.36
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num_cpus v1.2.1
[INFO] [stderr]    Compiling xlib v0.1.0 (https://github.com/servo/rust-xlib#38ce24e6)
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling shared_library v0.1.5
[INFO] [stderr]    Compiling screenshot v0.0.7 (https://github.com/darkwater/screenshot-rs#e808926a)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/git/checkouts/screenshot-rs-a773e88c0337d451/e808926/src/lib.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | #![feature(core_intrinsics, convert)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `screenshot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c7a066d440faa86b69e632becd0f71efc7610c74e325a68b421aa7b054228a76"`
[INFO] running `"docker" "rm" "-f" "c7a066d440faa86b69e632becd0f71efc7610c74e325a68b421aa7b054228a76"`
[INFO] [stdout] c7a066d440faa86b69e632becd0f71efc7610c74e325a68b421aa7b054228a76