[INFO] fetching crate rad1o-firmware 0.0.0...
[INFO] testing rad1o-firmware-0.0.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate rad1o-firmware 0.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rad1o-firmware 0.0.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rad1o-firmware 0.0.0
[INFO] finished tweaking crates.io crate rad1o-firmware 0.0.0
[INFO] tweaked toml for crates.io crate rad1o-firmware 0.0.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.1.8
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.13
[INFO] [stderr]   Downloaded cortex-m-rt v0.5.7
[INFO] [stderr]   Downloaded lpc43xx-hal v0.0.0
[INFO] [stderr]   Downloaded core_io v0.1.20190701
[INFO] [stderr]   Downloaded console-traits v0.2.0
[INFO] [stderr]   Downloaded fatfs v0.2.0
[INFO] [stderr]   Downloaded vga-framebuffer v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 477c7f7659d851afe2f07dc8908b620d8764defd11d60dad23b2c09016df9977
[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" "477c7f7659d851afe2f07dc8908b620d8764defd11d60dad23b2c09016df9977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "477c7f7659d851afe2f07dc8908b620d8764defd11d60dad23b2c09016df9977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "477c7f7659d851afe2f07dc8908b620d8764defd11d60dad23b2c09016df9977", kill_on_drop: false }`
[INFO] [stdout] 477c7f7659d851afe2f07dc8908b620d8764defd11d60dad23b2c09016df9977
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 096f5ecd33f6c1e783884b2230ff5e767bb72d79c16915eb7ab8a4f2b6d3d1e4
[INFO] running `Command { std: "docker" "start" "-a" "096f5ecd33f6c1e783884b2230ff5e767bb72d79c16915eb7ab8a4f2b6d3d1e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling cortex-m v0.6.4
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling cortex-m-rt v0.6.13
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m v0.5.10
[INFO] [stderr]    Compiling aligned v0.2.0
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling lpc43xx v0.1.0
[INFO] [stderr]    Compiling rad1o-firmware v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling console-traits v0.2.0
[INFO] [stderr]    Compiling core_io v0.1.20190701
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling vga-framebuffer v0.2.1
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stderr]    Compiling fatfs v0.2.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/vga-framebuffer-0.2.1/src/lib.rs:41:1
[INFO] [stdout]    |
[INFO] [stdout] 41 | #![feature(const_fn)]
[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 `vga-framebuffer`
[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] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/fatfs-0.2.0/src/dir_entry.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub(crate) fn reset_created(&mut self) {
[INFO] [stdout]     |                                            - expected `()` because of default return type
[INFO] [stdout] 150 |         // nop - user controls timestamps manually
[INFO] [stdout] 151 |         false
[INFO] [stdout]     |         ^^^^^ expected `()`, found `bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/fatfs-0.2.0/src/dir_entry.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub(crate) fn reset_modified(&mut self) {
[INFO] [stdout]     |                                             - expected `()` because of default return type
[INFO] [stdout] 162 |         // nop - user controls timestamps manually
[INFO] [stdout] 163 |         false
[INFO] [stdout]     |         ^^^^^ expected `()`, found `bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "096f5ecd33f6c1e783884b2230ff5e767bb72d79c16915eb7ab8a4f2b6d3d1e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "096f5ecd33f6c1e783884b2230ff5e767bb72d79c16915eb7ab8a4f2b6d3d1e4", kill_on_drop: false }`
[INFO] [stdout] 096f5ecd33f6c1e783884b2230ff5e767bb72d79c16915eb7ab8a4f2b6d3d1e4