[INFO] cloning repository https://github.com/julianandrews/sgf-render
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/julianandrews/sgf-render" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulianandrews%2Fsgf-render", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulianandrews%2Fsgf-render'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6faee5b3a592d43810ca567a3cbbde1bdb01782
[INFO] testing julianandrews/sgf-render against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulianandrews%2Fsgf-render" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/julianandrews/sgf-render 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/julianandrews/sgf-render
[INFO] finished tweaking git repo https://github.com/julianandrews/sgf-render
[INFO] tweaked toml for git repo https://github.com/julianandrews/sgf-render written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/julianandrews/sgf-render 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2671ac2f22f2b5739cd5312f1c4bbc148c5ce2e0466dfe99976484117bd1c58f
[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" "2671ac2f22f2b5739cd5312f1c4bbc148c5ce2e0466dfe99976484117bd1c58f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2671ac2f22f2b5739cd5312f1c4bbc148c5ce2e0466dfe99976484117bd1c58f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2671ac2f22f2b5739cd5312f1c4bbc148c5ce2e0466dfe99976484117bd1c58f", kill_on_drop: false }`
[INFO] [stdout] 2671ac2f22f2b5739cd5312f1c4bbc148c5ce2e0466dfe99976484117bd1c58f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db74b01371118fe54d4041c67994a42afcbeee244e380194dec759234ecf4391
[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" "db74b01371118fe54d4041c67994a42afcbeee244e380194dec759234ecf4391", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytemuck v1.4.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling unicode-general-category v0.2.0
[INFO] [stderr]    Compiling ttf-parser v0.9.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling float-cmp v0.5.3
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling smallvec v1.5.1
[INFO] [stderr]    Compiling unicode-ccc v0.1.0
[INFO] [stderr]    Compiling xmlparser v0.13.3
[INFO] [stderr]    Compiling unicode-bidi-mirroring v0.1.0
[INFO] [stderr]    Compiling unicode-script v0.5.2
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling xmlwriter v0.1.0
[INFO] [stderr]    Compiling pico-args v0.3.4
[INFO] [stderr]    Compiling unicode-vo v0.1.0
[INFO] [stderr]    Compiling rctree v0.3.3
[INFO] [stderr]    Compiling svg v0.8.0
[INFO] [stderr]    Compiling sgf-parse v2.0.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling data-url v0.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling svgtypes v0.5.0
[INFO] [stderr]    Compiling safe_arch v0.5.2
[INFO] [stderr]    Compiling rgb v0.8.25
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling kurbo v0.7.1
[INFO] [stderr]    Compiling memmap2 v0.1.0
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling simplecss v0.2.0
[INFO] [stderr]    Compiling roxmltree v0.13.0
[INFO] [stderr]    Compiling wide v0.6.4
[INFO] [stderr]    Compiling svgfilters v0.2.0
[INFO] [stderr]    Compiling png v0.16.7
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling fontdb v0.3.0
[INFO] [stderr]    Compiling flate2 v1.0.19
[INFO] [stderr]    Compiling rustybuzz v0.3.0
[INFO] [stderr]    Compiling tiny-skia v0.2.0
[INFO] [stderr]    Compiling usvg v0.12.0
[INFO] [stderr]    Compiling resvg v0.12.0
[INFO] [stderr]    Compiling sgf-render v1.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(str_split_once)]
[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 `sgf-render`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "db74b01371118fe54d4041c67994a42afcbeee244e380194dec759234ecf4391", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db74b01371118fe54d4041c67994a42afcbeee244e380194dec759234ecf4391", kill_on_drop: false }`
[INFO] [stdout] db74b01371118fe54d4041c67994a42afcbeee244e380194dec759234ecf4391