[INFO] cloning repository https://github.com/EE-EBa/An-RTT-implemention
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EE-EBa/An-RTT-implemention" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEE-EBa%2FAn-RTT-implemention", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEE-EBa%2FAn-RTT-implemention'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e3da2531f9502339c5695f3f7f56ea8d0d61a56
[INFO] checking EE-EBa/An-RTT-implemention against try#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEE-EBa%2FAn-RTT-implemention" "/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] started tweaking git repo https://github.com/EE-EBa/An-RTT-implemention
[INFO] finished tweaking git repo https://github.com/EE-EBa/An-RTT-implemention
[INFO] tweaked toml for git repo https://github.com/EE-EBa/An-RTT-implemention written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/EE-EBa/An-RTT-implemention on toolchain f77b5bc6c7c84df104f86b0dd01d9490e3923fa8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/EE-EBa/An-RTT-implemention 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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a9f3c7c5eb70d03b5a00f24697c31864d110ef1a3f360f96d31171443087d7b
[INFO] running `Command { std: "docker" "start" "-a" "6a9f3c7c5eb70d03b5a00f24697c31864d110ef1a3f360f96d31171443087d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a9f3c7c5eb70d03b5a00f24697c31864d110ef1a3f360f96d31171443087d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a9f3c7c5eb70d03b5a00f24697c31864d110ef1a3f360f96d31171443087d7b", kill_on_drop: false }`
[INFO] [stdout] 6a9f3c7c5eb70d03b5a00f24697c31864d110ef1a3f360f96d31171443087d7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a020edf25e8f4e4c33fc4525a3c78aa4a4c09a78ff056707448885e4606c5934
[INFO] running `Command { std: "docker" "start" "-a" "a020edf25e8f4e4c33fc4525a3c78aa4a4c09a78ff056707448885e4606c5934", kill_on_drop: false }`
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling cortex-m-rt v0.7.5
[INFO] [stderr]     Checking critical-section v1.2.0
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking panic-halt v1.0.0
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking rtt-target v0.5.0
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.5
[INFO] [stderr]     Checking rtt_prints v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rtt_prints` (bin "rtt_prints") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a020edf25e8f4e4c33fc4525a3c78aa4a4c09a78ff056707448885e4606c5934", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a020edf25e8f4e4c33fc4525a3c78aa4a4c09a78ff056707448885e4606c5934", kill_on_drop: false }`
[INFO] [stdout] a020edf25e8f4e4c33fc4525a3c78aa4a4c09a78ff056707448885e4606c5934
