[INFO] fetching crate drogue-esp8266 0.3.1...
[INFO] checking drogue-esp8266-0.3.1 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate drogue-esp8266 0.3.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate drogue-esp8266 0.3.1 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/.cargo/config
[INFO] started tweaking crates.io crate drogue-esp8266 0.3.1
[INFO] finished tweaking crates.io crate drogue-esp8266 0.3.1
[INFO] tweaked toml for crates.io crate drogue-esp8266 0.3.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20c61a9a5e051b805e50485a2b912308f88bbfa45cfaf623274f097e0a5a8521
[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" "20c61a9a5e051b805e50485a2b912308f88bbfa45cfaf623274f097e0a5a8521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20c61a9a5e051b805e50485a2b912308f88bbfa45cfaf623274f097e0a5a8521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20c61a9a5e051b805e50485a2b912308f88bbfa45cfaf623274f097e0a5a8521", kill_on_drop: false }`
[INFO] [stdout] 20c61a9a5e051b805e50485a2b912308f88bbfa45cfaf623274f097e0a5a8521
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] 11b1d9c47654369a6e353f3f0f5d26ddc43c234cc477d1af97de4e97f8cd059c
[INFO] running `Command { std: "docker" "start" "-a" "11b1d9c47654369a6e353f3f0f5d26ddc43c234cc477d1af97de4e97f8cd059c", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]     Checking no-std-net v0.4.0
[INFO] [stderr]    Compiling drogue-esp8266 v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking moveslice v2.0.1
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking log v0.4.13
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking as-slice v0.1.4
[INFO] [stderr]     Checking drogue-network v0.2.0
[INFO] [stdout] error[E0432]: unresolved import `arrayvec`
[INFO] [stdout]    --> src/protocol.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |     use arrayvec::ArrayString;
[INFO] [stdout]     |         ^^^^^^^^ use of undeclared crate or module `arrayvec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/protocol.rs:296:57
[INFO] [stdout]     |
[INFO] [stdout] 296 |         write!(&mut buf, "{:?}", Response::DataReceived(array, data.len())).expect("Can't write");
[INFO] [stdout]     |                                                         ^^^^^ expected an array with a fixed size of 512 elements, found one with 128 elements
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt::Write`
[INFO] [stdout]    --> src/protocol.rs:268:9
[INFO] [stdout]     |
[INFO] [stdout] 268 |     use core::fmt::Write;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `drogue-esp8266`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "11b1d9c47654369a6e353f3f0f5d26ddc43c234cc477d1af97de4e97f8cd059c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11b1d9c47654369a6e353f3f0f5d26ddc43c234cc477d1af97de4e97f8cd059c", kill_on_drop: false }`
[INFO] [stdout] 11b1d9c47654369a6e353f3f0f5d26ddc43c234cc477d1af97de4e97f8cd059c