[INFO] cloning repository https://github.com/silven/armstrong
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/silven/armstrong" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsilven%2Farmstrong", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsilven%2Farmstrong'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67cc95946d52c41baf2b4c8a5cad34bc2353cc83
[INFO] checking silven/armstrong against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsilven%2Farmstrong" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/silven/armstrong on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-13/source/.cargo/config
[INFO] started tweaking git repo https://github.com/silven/armstrong
[INFO] finished tweaking git repo https://github.com/silven/armstrong
[INFO] tweaked toml for git repo https://github.com/silven/armstrong written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/silven/armstrong already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cortex-m-rt v0.2.4
[INFO] [stderr]   Downloaded cortex-m v0.2.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff157720efe7a4e55dfcc6a56479346b9ad910a968353ecfd38ca0385417c7e2
[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" "ff157720efe7a4e55dfcc6a56479346b9ad910a968353ecfd38ca0385417c7e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff157720efe7a4e55dfcc6a56479346b9ad910a968353ecfd38ca0385417c7e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff157720efe7a4e55dfcc6a56479346b9ad910a968353ecfd38ca0385417c7e2", kill_on_drop: false }`
[INFO] [stdout] ff157720efe7a4e55dfcc6a56479346b9ad910a968353ecfd38ca0385417c7e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb4144c41ba080950b50ce7aed54c0404776365ee308e0057f10d4158f9e288e
[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" "eb4144c41ba080950b50ce7aed54c0404776365ee308e0057f10d4158f9e288e", kill_on_drop: false }`
[INFO] [stderr]     Checking armstrong v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `crash_uart` should have an upper camel case name
[INFO] [stdout]   --> src/isr.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct crash_uart {
[INFO] [stdout]    |        ^^^^^^^^^^ help: convert the identifier to upper camel case: `CrashUart`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/isr.rs:20:24
[INFO] [stdout]    |
[INFO] [stdout] 20 |                     if (U0LSR_REGISTER.read() & 0x20 != 0) {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stdout]   --> src/isr.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[lang="panic_fmt"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `crash_uart` should have an upper camel case name
[INFO] [stdout]   --> src/isr.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct crash_uart {
[INFO] [stdout]    |        ^^^^^^^^^^ help: convert the identifier to upper camel case: `CrashUart`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/isr.rs:20:24
[INFO] [stdout]    |
[INFO] [stdout] 20 |                     if (U0LSR_REGISTER.read() & 0x20 != 0) {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stdout]   --> src/isr.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[lang="panic_fmt"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0522`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `armstrong`
[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: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0522`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "eb4144c41ba080950b50ce7aed54c0404776365ee308e0057f10d4158f9e288e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb4144c41ba080950b50ce7aed54c0404776365ee308e0057f10d4158f9e288e", kill_on_drop: false }`
[INFO] [stdout] eb4144c41ba080950b50ce7aed54c0404776365ee308e0057f10d4158f9e288e