[INFO] fetching crate panic-rtt-target 0.1.2...
[INFO] checking panic-rtt-target-0.1.2 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate panic-rtt-target 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate panic-rtt-target 0.1.2 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a92d0ac459dde7c6949661bb3f1f232c0514a32944237648a29a20f5a5c2a20
[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" "3a92d0ac459dde7c6949661bb3f1f232c0514a32944237648a29a20f5a5c2a20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a92d0ac459dde7c6949661bb3f1f232c0514a32944237648a29a20f5a5c2a20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a92d0ac459dde7c6949661bb3f1f232c0514a32944237648a29a20f5a5c2a20", kill_on_drop: false }`
[INFO] [stdout] 3a92d0ac459dde7c6949661bb3f1f232c0514a32944237648a29a20f5a5c2a20
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 6e00e477f5e80c6522f60347cb22b342ad15c3e097f678e66f6c2c2f514ca7b8
[INFO] running `Command { std: "docker" "start" "-a" "6e00e477f5e80c6522f60347cb22b342ad15c3e097f678e66f6c2c2f514ca7b8", kill_on_drop: false }`
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking rtt-target v0.3.1
[INFO] [stderr]     Checking 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]   --> 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: 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]   --> 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] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6e00e477f5e80c6522f60347cb22b342ad15c3e097f678e66f6c2c2f514ca7b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e00e477f5e80c6522f60347cb22b342ad15c3e097f678e66f6c2c2f514ca7b8", kill_on_drop: false }`
[INFO] [stdout] 6e00e477f5e80c6522f60347cb22b342ad15c3e097f678e66f6c2c2f514ca7b8