[INFO] cloning repository https://github.com/MatthewBlanchard/QStroke
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MatthewBlanchard/QStroke" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthewBlanchard%2FQStroke", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthewBlanchard%2FQStroke'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e30a46be33cd62601aa7488ff6852f516676aead
[INFO] testing MatthewBlanchard/QStroke against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthewBlanchard%2FQStroke" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MatthewBlanchard/QStroke on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MatthewBlanchard/QStroke
[INFO] finished tweaking git repo https://github.com/MatthewBlanchard/QStroke
[INFO] tweaked toml for git repo https://github.com/MatthewBlanchard/QStroke written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/MatthewBlanchard/QStroke already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ureq v1.5.4
[INFO] [stderr]   Downloaded skia-safe v0.36.0
[INFO] [stderr]   Downloaded skia-bindings v0.36.0
[INFO] [stderr]   Downloaded bindgen v0.55.1
[INFO] [stderr]   Downloaded xmlwriter v0.1.0
[INFO] [stderr]   Downloaded clang-sys v1.0.3
[INFO] [stderr]   Downloaded xmltree v0.10.2
[INFO] [stderr]   Downloaded skulpin-renderer v0.4.0
[INFO] [stderr]   Downloaded skulpin v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7dbe1666dd960d8ffdc2d4d51b3d75b9abf1211deadebb1190f38984b74abd5f
[INFO] running `Command { std: "docker" "start" "-a" "7dbe1666dd960d8ffdc2d4d51b3d75b9abf1211deadebb1190f38984b74abd5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7dbe1666dd960d8ffdc2d4d51b3d75b9abf1211deadebb1190f38984b74abd5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dbe1666dd960d8ffdc2d4d51b3d75b9abf1211deadebb1190f38984b74abd5f", kill_on_drop: false }`
[INFO] [stdout] 7dbe1666dd960d8ffdc2d4d51b3d75b9abf1211deadebb1190f38984b74abd5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 124d52daac5f3ba157de91e0801856c0ebc3f22d1b9f136d3e4f62d4490ae76e
[INFO] running `Command { std: "docker" "start" "-a" "124d52daac5f3ba157de91e0801856c0ebc3f22d1b9f136d3e4f62d4490ae76e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling bindgen v0.55.1
[INFO] [stderr]    Compiling chunked_transfer v1.3.0
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling xmlwriter v0.1.0
[INFO] [stderr]    Compiling standback v0.2.14
[INFO] [stderr]    Compiling time v0.2.23
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]    Compiling thread_local v1.1.0
[INFO] [stderr]    Compiling clang-sys v1.0.3
[INFO] [stderr]    Compiling libloading v0.6.6
[INFO] [stderr]    Compiling qstring v0.7.2
[INFO] [stderr]    Compiling unicode-normalization v0.1.16
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling ash v0.31.0
[INFO] [stderr]    Compiling xmltree v0.10.2
[INFO] [stderr]    Compiling glifparser v0.0.0 (https://github.com/mfeq/glifparser#5f5f1d76)
[INFO] [stderr]    Compiling idna v0.2.0
[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] [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` 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" "124d52daac5f3ba157de91e0801856c0ebc3f22d1b9f136d3e4f62d4490ae76e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "124d52daac5f3ba157de91e0801856c0ebc3f22d1b9f136d3e4f62d4490ae76e", kill_on_drop: false }`
[INFO] [stdout] 124d52daac5f3ba157de91e0801856c0ebc3f22d1b9f136d3e4f62d4490ae76e