[INFO] cloning repository https://github.com/ctrlcctrlv/Qglif
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ctrlcctrlv/Qglif" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctrlcctrlv%2FQglif", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctrlcctrlv%2FQglif'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e34cbdf4db05f73ca3bf4ce01d0a95dbb9de011c
[INFO] testing ctrlcctrlv/Qglif against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctrlcctrlv%2FQglif" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ctrlcctrlv/Qglif on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ctrlcctrlv/Qglif
[INFO] finished tweaking git repo https://github.com/ctrlcctrlv/Qglif
[INFO] tweaked toml for git repo https://github.com/ctrlcctrlv/Qglif written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/ctrlcctrlv/Qglif already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa8d36b8f96c8fc4923e38e5f986ff906b890553f02313cd99dc6dc7be2e82e1
[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" "fa8d36b8f96c8fc4923e38e5f986ff906b890553f02313cd99dc6dc7be2e82e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa8d36b8f96c8fc4923e38e5f986ff906b890553f02313cd99dc6dc7be2e82e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa8d36b8f96c8fc4923e38e5f986ff906b890553f02313cd99dc6dc7be2e82e1", kill_on_drop: false }`
[INFO] [stdout] fa8d36b8f96c8fc4923e38e5f986ff906b890553f02313cd99dc6dc7be2e82e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 369e4cd038e6c15a5d67ccc4185fc3cba50b94d0892ba0c5fb71957f12cfa548
[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" "369e4cd038e6c15a5d67ccc4185fc3cba50b94d0892ba0c5fb71957f12cfa548", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling regex-syntax v0.6.19
[INFO] [stderr]    Compiling curl v0.4.33
[INFO] [stderr]    Compiling bindgen v0.55.1
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling object v0.21.1
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]    Compiling curl-sys v0.4.36+curl-7.71.1
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling imgui-sys v0.4.0
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]    Compiling xmltree v0.10.1
[INFO] [stderr]    Compiling clang-sys v1.0.0
[INFO] [stderr]    Compiling nfd v0.0.4 (https://github.com/raphlinus/nfd-rs?rev=5e09b79bf511e3a91ae8cefdb96e9734fa4a79c2#5e09b79b)
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling filetime v0.2.12
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling xcb v0.8.2
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling mfeq-ipc v0.0.0 (https://github.com/mfeq/ipc#f07ea86d)
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling ash v0.31.0
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling glifparser v0.0.0 (https://github.com/mfeq/glifparser#5f5f1d76)
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/glifparser-a0b09305bd94eda1/5f5f1d7/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(assoc_char_funcs, let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling colored v2.0.0
[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 `glifparser`
[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 `Command { std: "docker" "inspect" "369e4cd038e6c15a5d67ccc4185fc3cba50b94d0892ba0c5fb71957f12cfa548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "369e4cd038e6c15a5d67ccc4185fc3cba50b94d0892ba0c5fb71957f12cfa548", kill_on_drop: false }`
[INFO] [stdout] 369e4cd038e6c15a5d67ccc4185fc3cba50b94d0892ba0c5fb71957f12cfa548