[INFO] cloning repository https://github.com/jdburnet/rust-mc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jdburnet/rust-mc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdburnet%2Frust-mc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdburnet%2Frust-mc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 074f25854300e90ace43390a5a011313014ed560
[INFO] checking jdburnet/rust-mc against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdburnet%2Frust-mc" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jdburnet/rust-mc on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/.cargo/config
[INFO] started tweaking git repo https://github.com/jdburnet/rust-mc
[INFO] finished tweaking git repo https://github.com/jdburnet/rust-mc
[INFO] tweaked toml for git repo https://github.com/jdburnet/rust-mc written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/jdburnet/rust-mc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nb v0.1.1
[INFO] [stderr]   Downloaded aligned v0.2.0
[INFO] [stderr]   Downloaded generic-array v0.11.1
[INFO] [stderr]   Downloaded embedded-hal v0.2.1
[INFO] [stderr]   Downloaded lsm303dlhc v0.2.0
[INFO] [stderr]   Downloaded cortex-m-rt v0.5.1
[INFO] [stderr]   Downloaded bare-metal v0.2.1
[INFO] [stderr]   Downloaded panic-abort v0.2.0
[INFO] [stderr]   Downloaded cortex-m v0.5.4
[INFO] [stderr]   Downloaded l3gd20 v0.2.0
[INFO] [stderr]   Downloaded stm32f30x-hal v0.2.0
[INFO] [stderr]   Downloaded f3 v0.6.1
[INFO] [stderr]   Downloaded vcell v0.1.0
[INFO] [stderr]   Downloaded stm32f30x v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", 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] 995c7888f0a48fcca0a363d7bb4c06a5a6b42aa13418f5da47269a4328d4de8b
[INFO] running `Command { std: "docker" "start" "-a" "995c7888f0a48fcca0a363d7bb4c06a5a6b42aa13418f5da47269a4328d4de8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "995c7888f0a48fcca0a363d7bb4c06a5a6b42aa13418f5da47269a4328d4de8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "995c7888f0a48fcca0a363d7bb4c06a5a6b42aa13418f5da47269a4328d4de8b", kill_on_drop: false }`
[INFO] [stdout] 995c7888f0a48fcca0a363d7bb4c06a5a6b42aa13418f5da47269a4328d4de8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5c0578387b0bd7fbb570a4d8811ed85faceb0657ee935bbc7ca8c613eabe58f
[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" "e5c0578387b0bd7fbb570a4d8811ed85faceb0657ee935bbc7ca8c613eabe58f", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v0.1.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling stm32f30x v0.7.0
[INFO] [stderr]     Checking bare-metal v0.2.1
[INFO] [stderr]    Compiling f3 v0.6.1
[INFO] [stderr]     Checking panic-abort v0.2.0
[INFO] [stderr]     Checking futures v0.1.23
[INFO] [stderr]    Compiling cortex-m-rt v0.5.1
[INFO] [stderr]    Compiling cortex-m v0.5.4
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(panic_implementation)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: subsumed by `#[panic_handler]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `panic_implementation` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:28:3
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[panic_implementation]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `panic-abort`.
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e5c0578387b0bd7fbb570a4d8811ed85faceb0657ee935bbc7ca8c613eabe58f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5c0578387b0bd7fbb570a4d8811ed85faceb0657ee935bbc7ca8c613eabe58f", kill_on_drop: false }`
[INFO] [stdout] e5c0578387b0bd7fbb570a4d8811ed85faceb0657ee935bbc7ca8c613eabe58f