[INFO] updating cached repository https://github.com/MashPlant/ray_tracer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 62ea967f344ad420fd026805892594819baf1149
[INFO] testing MashPlant/ray_tracer against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FMashPlant%2Fray_tracer" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  23% (17/73)   
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[INFO] validating manifest of git repo https://github.com/MashPlant/ray_tracer on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/MashPlant/ray_tracer
[INFO] finished tweaking git repo https://github.com/MashPlant/ray_tracer
[INFO] tweaked toml for git repo https://github.com/MashPlant/ray_tracer written to work/builds/worker-6/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 4c542aa7b44491bba524e25d5e53a595e049c22466e60894dbba49d7d473df55
[INFO] running `"docker" "start" "-a" "4c542aa7b44491bba524e25d5e53a595e049c22466e60894dbba49d7d473df55"`
[INFO] [stderr]    Compiling f128_internal v0.1.0
[INFO] [stderr]    Compiling bincode v1.2.0
[INFO] [stderr]    Compiling inflate v0.3.4
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling f128_input v0.1.0
[INFO] [stderr]    Compiling f128 v0.2.3
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/f128-0.2.3/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_hygiene)]
[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 `f128`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4c542aa7b44491bba524e25d5e53a595e049c22466e60894dbba49d7d473df55"`
[INFO] running `"docker" "rm" "-f" "4c542aa7b44491bba524e25d5e53a595e049c22466e60894dbba49d7d473df55"`
[INFO] [stdout] 4c542aa7b44491bba524e25d5e53a595e049c22466e60894dbba49d7d473df55