[INFO] cloning repository https://github.com/Ichbinjoe/stm-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ichbinjoe/stm-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIchbinjoe%2Fstm-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIchbinjoe%2Fstm-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ccb06576fa4efe630fc8e770fa590e392876c192
[INFO] checking Ichbinjoe/stm-demo against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIchbinjoe%2Fstm-demo" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ichbinjoe/stm-demo on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/Ichbinjoe/stm-demo
[INFO] finished tweaking git repo https://github.com/Ichbinjoe/stm-demo
[INFO] tweaked toml for git repo https://github.com/Ichbinjoe/stm-demo written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Ichbinjoe/stm-demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.7
[INFO] [stderr]   Downloaded cortex-m v0.7.1
[INFO] [stderr]   Downloaded stm32l4 v0.12.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c12f72f60e3be18dbd7c40e0fc17c2b1defef7c9f8fac08f73b9b1cd73acae6e
[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" "c12f72f60e3be18dbd7c40e0fc17c2b1defef7c9f8fac08f73b9b1cd73acae6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c12f72f60e3be18dbd7c40e0fc17c2b1defef7c9f8fac08f73b9b1cd73acae6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c12f72f60e3be18dbd7c40e0fc17c2b1defef7c9f8fac08f73b9b1cd73acae6e", kill_on_drop: false }`
[INFO] [stdout] c12f72f60e3be18dbd7c40e0fc17c2b1defef7c9f8fac08f73b9b1cd73acae6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 409a3531f328ccef2c0077892b8996583f10320de9fdb04fa08191b37ca42b1d
[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" "409a3531f328ccef2c0077892b8996583f10320de9fdb04fa08191b37ca42b1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.7.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]    Compiling stm32l4 v0.12.1
[INFO] [stderr]    Compiling joeblink v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking as-slice v0.1.4
[INFO] [stderr]     Checking embedded-hal v0.2.4
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking aligned v0.3.4
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking cortex-m-rt v0.6.13
[INFO] [stdout] warning: unused import: `cortex_m::asm`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cortex_m::asm;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `joeblink`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "409a3531f328ccef2c0077892b8996583f10320de9fdb04fa08191b37ca42b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "409a3531f328ccef2c0077892b8996583f10320de9fdb04fa08191b37ca42b1d", kill_on_drop: false }`
[INFO] [stdout] 409a3531f328ccef2c0077892b8996583f10320de9fdb04fa08191b37ca42b1d