[INFO] fetching crate panic-rtt-target 0.1.0...
[INFO] checking panic-rtt-target-0.1.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate panic-rtt-target 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate panic-rtt-target 0.1.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate panic-rtt-target 0.1.0
[INFO] finished tweaking crates.io crate panic-rtt-target 0.1.0
[INFO] tweaked toml for crates.io crate panic-rtt-target 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] 49c41f4e006bfc61d613f0a59aaaf261c530560776743cce95649491a96acd46
[INFO] running `Command { std: "docker" "start" "-a" "49c41f4e006bfc61d613f0a59aaaf261c530560776743cce95649491a96acd46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49c41f4e006bfc61d613f0a59aaaf261c530560776743cce95649491a96acd46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49c41f4e006bfc61d613f0a59aaaf261c530560776743cce95649491a96acd46", kill_on_drop: false }`
[INFO] [stdout] 49c41f4e006bfc61d613f0a59aaaf261c530560776743cce95649491a96acd46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6241872dc7faa5e937adfd623919b05cf5cb648724f5027ecf0a042b0603212
[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" "f6241872dc7faa5e937adfd623919b05cf5cb648724f5027ecf0a042b0603212", kill_on_drop: false }`
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking vcell v0.1.2
[INFO] [stderr]     Checking rtt-target v0.1.1
[INFO] [stderr]     Checking panic-rtt-target v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: You must specify a platform feature for panic-rtt-target, such as 'cortex-m'.
[INFO] [stdout]   --> src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | compile_error!("You must specify a platform feature for panic-rtt-target, such as 'cortex-m'.");
[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`.
[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] [stdout] error: You must specify a platform feature for panic-rtt-target, such as 'cortex-m'.
[INFO] [stdout]   --> src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | compile_error!("You must specify a platform feature for panic-rtt-target, such as 'cortex-m'.");
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f6241872dc7faa5e937adfd623919b05cf5cb648724f5027ecf0a042b0603212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6241872dc7faa5e937adfd623919b05cf5cb648724f5027ecf0a042b0603212", kill_on_drop: false }`
[INFO] [stdout] f6241872dc7faa5e937adfd623919b05cf5cb648724f5027ecf0a042b0603212