[INFO] cloning repository https://github.com/dflemstr/seven-segment-display
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dflemstr/seven-segment-display" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdflemstr%2Fseven-segment-display", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdflemstr%2Fseven-segment-display'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 37b9c8aeb15eb63900de1261da6400cdb1936709
[INFO] documenting dflemstr/seven-segment-display against 1.100.0-beta.1 for beta-rustdoc-1.100
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdflemstr%2Fseven-segment-display" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-5-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-5-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/dflemstr/seven-segment-display
[INFO] finished tweaking git repo https://github.com/dflemstr/seven-segment-display
[INFO] tweaked toml for git repo https://github.com/dflemstr/seven-segment-display written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dflemstr/seven-segment-display on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dflemstr/seven-segment-display already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ufmt-macros v0.1.1
[INFO] [stderr]   Downloaded ufmt-write v0.1.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.26
[INFO] [stderr]   Downloaded ringbuffer v0.7.1
[INFO] [stderr]   Downloaded nb v1.0.0
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.19
[INFO] [stderr]   Downloaded embedded-hal v0.2.4
[INFO] [stderr]   Downloaded array-init v2.0.0
[INFO] [stderr]   Downloaded panic-abort v0.3.2
[INFO] [stderr]   Downloaded avr-device-macros v0.3.0
[INFO] [stderr]   Downloaded arrayvec v0.7.0
[INFO] [stderr]   Downloaded syn v1.0.69
[INFO] [stderr]   Downloaded paste v1.0.5
[INFO] [stderr]   Downloaded ufmt v0.1.0
[INFO] [stderr]   Downloaded avr-device v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c0959b4b4aff07e99eb9d638d8d9c4a001855f3493d64dd7eb1b95e68fb7c8e1
[INFO] running `Command { std: "docker" "start" "c0959b4b4aff07e99eb9d638d8d9c4a001855f3493d64dd7eb1b95e68fb7c8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0959b4b4aff07e99eb9d638d8d9c4a001855f3493d64dd7eb1b95e68fb7c8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c0959b4b4aff07e99eb9d638d8d9c4a001855f3493d64dd7eb1b95e68fb7c8e1" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0959b4b4aff07e99eb9d638d8d9c4a001855f3493d64dd7eb1b95e68fb7c8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c0959b4b4aff07e99eb9d638d8d9c4a001855f3493d64dd7eb1b95e68fb7c8e1" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]     Checking array-init v2.0.0
[INFO] [stderr]     Checking arrayvec v0.7.0
[INFO] [stderr]     Checking panic-abort v0.3.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/panic-abort-0.3.2/src/lib.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | #![feature(core_intrinsics)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `panic_handler` has been stable since `1.30.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `panic-abort` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c0959b4b4aff07e99eb9d638d8d9c4a001855f3493d64dd7eb1b95e68fb7c8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0959b4b4aff07e99eb9d638d8d9c4a001855f3493d64dd7eb1b95e68fb7c8e1", kill_on_drop: false }`
[INFO] [stdout] c0959b4b4aff07e99eb9d638d8d9c4a001855f3493d64dd7eb1b95e68fb7c8e1
