[INFO] fetching crate rtt-target 0.2.2...
[INFO] checking rtt-target-0.2.2 against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] extracting crate rtt-target 0.2.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rtt-target 0.2.2 on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rtt-target 0.2.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rtt-target 0.2.2
[INFO] tweaked toml for crates.io crate rtt-target 0.2.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate rtt-target 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df89d4ea2d9447a3c81d762a6fe2738bbf58f7c221906baadefc7ae61c090c2f
[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" "df89d4ea2d9447a3c81d762a6fe2738bbf58f7c221906baadefc7ae61c090c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df89d4ea2d9447a3c81d762a6fe2738bbf58f7c221906baadefc7ae61c090c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df89d4ea2d9447a3c81d762a6fe2738bbf58f7c221906baadefc7ae61c090c2f", kill_on_drop: false }`
[INFO] [stdout] df89d4ea2d9447a3c81d762a6fe2738bbf58f7c221906baadefc7ae61c090c2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb13cb5d40fa47b4d338c85dc12e1b7465c1ed94be8bb59f2a50942bf615a296
[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" "cb13cb5d40fa47b4d338c85dc12e1b7465c1ed94be8bb59f2a50942bf615a296", kill_on_drop: false }`
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking rtt-target v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: attribute should be applied to a function or static
[INFO] [stdout]    --> src/lib.rs:177:13
[INFO] [stdout]     |
[INFO] [stdout] 177 |             #[no_mangle]
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout] 178 |             #[link_name = "_SEGGER_RTT"]
[INFO] [stdout] 179 |             static mut CONTROL_BLOCK: MaybeUninit<rtt::RttHeader>;
[INFO] [stdout]     |             ------------------------------------------------------ not a function or static
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function or static
[INFO] [stdout]    --> src/lib.rs:177:13
[INFO] [stdout]     |
[INFO] [stdout] 177 |             #[no_mangle]
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout] 178 |             #[link_name = "_SEGGER_RTT"]
[INFO] [stdout] 179 |             static mut CONTROL_BLOCK: MaybeUninit<rtt::RttHeader>;
[INFO] [stdout]     |             ------------------------------------------------------ not a function or static
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "cb13cb5d40fa47b4d338c85dc12e1b7465c1ed94be8bb59f2a50942bf615a296", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb13cb5d40fa47b4d338c85dc12e1b7465c1ed94be8bb59f2a50942bf615a296", kill_on_drop: false }`
[INFO] [stdout] cb13cb5d40fa47b4d338c85dc12e1b7465c1ed94be8bb59f2a50942bf615a296