[INFO] fetching crate panic-rtt-target 0.1.2...
[INFO] testing panic-rtt-target-0.1.2 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate panic-rtt-target 0.1.2 into /workspace/builds/worker-102/source
[INFO] validating manifest of crates.io crate panic-rtt-target 0.1.2 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate panic-rtt-target 0.1.2
[INFO] finished tweaking crates.io crate panic-rtt-target 0.1.2
[INFO] tweaked toml for crates.io crate panic-rtt-target 0.1.2 written to /workspace/builds/worker-102/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b873bcbcaaa6e949b5535e992015b4fcf88a3bd50db4ed7279b84ae3eea64554
[INFO] running `Command { std: "docker" "start" "-a" "b873bcbcaaa6e949b5535e992015b4fcf88a3bd50db4ed7279b84ae3eea64554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b873bcbcaaa6e949b5535e992015b4fcf88a3bd50db4ed7279b84ae3eea64554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b873bcbcaaa6e949b5535e992015b4fcf88a3bd50db4ed7279b84ae3eea64554", kill_on_drop: false }`
[INFO] [stdout] b873bcbcaaa6e949b5535e992015b4fcf88a3bd50db4ed7279b84ae3eea64554
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8d379dc01bd285bdee601dc9b573da1695df63e2427422de5cece4ab55118ed
[INFO] running `Command { std: "docker" "start" "-a" "d8d379dc01bd285bdee601dc9b573da1695df63e2427422de5cece4ab55118ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling rtt-target v0.3.1
[INFO] [stderr]    Compiling panic-rtt-target v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: You must specify a platform feature for panic-rtt-target, such as 'cortex-m'.
[INFO] [stdout] Example:
[INFO] [stdout]   # Cargo.toml
[INFO] [stdout]   panic-rtt-target = { version = "x.y.z", features = ["cortex-m"] }
[INFO] [stdout] 
[INFO] [stdout]   --> src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | / compile_error!(concat!(
[INFO] [stdout] 74 | |     "You must specify a platform feature for panic-rtt-target, such as 'cortex-m'.\r\n",
[INFO] [stdout] 75 | |     "Example:\r\n",
[INFO] [stdout] 76 | |     "  # Cargo.toml\r\n",
[INFO] [stdout] 77 | |     "  panic-rtt-target = { version = \"x.y.z\", features = [\"cortex-m\"] }\r\n"
[INFO] [stdout] 78 | | ));
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `panic-rtt-target` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d8d379dc01bd285bdee601dc9b573da1695df63e2427422de5cece4ab55118ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8d379dc01bd285bdee601dc9b573da1695df63e2427422de5cece4ab55118ed", kill_on_drop: false }`
[INFO] [stdout] d8d379dc01bd285bdee601dc9b573da1695df63e2427422de5cece4ab55118ed