[INFO] fetching crate ArmlabRadio 0.6.5...
[INFO] checking ArmlabRadio-0.6.5 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate ArmlabRadio 0.6.5 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate ArmlabRadio 0.6.5 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ArmlabRadio 0.6.5
[INFO] finished tweaking crates.io crate ArmlabRadio 0.6.5
[INFO] tweaked toml for crates.io crate ArmlabRadio 0.6.5 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate ArmlabRadio 0.6.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitflags v1.3.2
[INFO] [stderr]   Downloaded serialport v4.2.0
[INFO] [stderr]   Downloaded memchr v2.5.0
[INFO] [stderr]   Downloaded regex v1.6.0
[INFO] [stderr]   Downloaded gcc v0.3.55
[INFO] [stderr]   Downloaded iovec v0.1.4
[INFO] [stderr]   Downloaded serde_derive v1.0.142
[INFO] [stderr]   Downloaded libc v0.2.127
[INFO] [stderr]   Downloaded cfg-if v0.1.10
[INFO] [stderr]   Downloaded camino v1.0.9
[INFO] [stderr]   Downloaded semver v1.0.13
[INFO] [stderr]   Downloaded syn v1.0.99
[INFO] [stderr]   Downloaded instant v0.1.12
[INFO] [stderr]   Downloaded redox_syscall v0.2.16
[INFO] [stderr]   Downloaded remove_dir_all v0.5.3
[INFO] [stderr]   Downloaded cargo_metadata v0.14.2
[INFO] [stderr]   Downloaded bytes v0.4.12
[INFO] [stderr]   Downloaded bytecount v0.6.3
[INFO] [stderr]   Downloaded cargo-platform v0.1.2
[INFO] [stderr]   Downloaded unicode-ident v1.0.3
[INFO] [stderr]   Downloaded serde v1.0.142
[INFO] [stderr]   Downloaded serde_json v1.0.83
[INFO] [stderr]   Downloaded error-chain v0.12.4
[INFO] [stderr]   Downloaded version_check v0.9.4
[INFO] [stderr]   Downloaded unicase v2.6.0
[INFO] [stderr]   Downloaded pulldown-cmark v0.9.2
[INFO] [stderr]   Downloaded fastrand v1.8.0
[INFO] [stderr]   Downloaded tempfile v3.3.0
[INFO] [stderr]   Downloaded same-file v1.0.6
[INFO] [stderr]   Downloaded winapi-util v0.1.5
[INFO] [stderr]   Downloaded walkdir v2.3.2
[INFO] [stderr]   Downloaded skeptic v0.13.7
[INFO] [stderr]   Downloaded regex-syntax v0.6.27
[INFO] [stderr]   Downloaded void v1.0.2
[INFO] [stderr]   Downloaded nix v0.10.0
[INFO] [stderr]   Downloaded itoa v1.0.3
[INFO] [stderr]   Downloaded ryu v1.0.11
[INFO] [stderr]   Downloaded proc-macro2 v1.0.43
[INFO] [stderr]   Downloaded quote v1.0.21
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded mach v0.3.2
[INFO] [stderr]   Downloaded nix v0.24.2
[INFO] [stderr]   Downloaded aho-corasick v0.7.18
[INFO] [stderr]   Downloaded i2cdev v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e55b1d805d9f3de121c2705488a6dc4422217a32c7c6edffa95052b12b016fda
[INFO] running `Command { std: "docker" "start" "-a" "e55b1d805d9f3de121c2705488a6dc4422217a32c7c6edffa95052b12b016fda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e55b1d805d9f3de121c2705488a6dc4422217a32c7c6edffa95052b12b016fda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e55b1d805d9f3de121c2705488a6dc4422217a32c7c6edffa95052b12b016fda", kill_on_drop: false }`
[INFO] [stdout] e55b1d805d9f3de121c2705488a6dc4422217a32c7c6edffa95052b12b016fda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62ca17adab4d63e945137e9942586837f92661d03a39848bf49372fac7ea8fd6
[INFO] running `Command { std: "docker" "start" "-a" "62ca17adab4d63e945137e9942586837f92661d03a39848bf49372fac7ea8fd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling serde_derive v1.0.142
[INFO] [stderr]    Compiling serde v1.0.142
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling semver v1.0.13
[INFO] [stderr]    Compiling camino v1.0.9
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling pulldown-cmark v0.9.2
[INFO] [stderr]    Compiling itoa v1.0.3
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling bytecount v0.6.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking nix v0.24.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking serialport v4.2.0
[INFO] [stderr]    Compiling cargo-platform v0.1.2
[INFO] [stderr]    Compiling cargo_metadata v0.14.2
[INFO] [stderr]    Compiling skeptic v0.13.7
[INFO] [stderr]    Compiling i2cdev v0.3.2
[INFO] [stderr]     Checking ArmlabRadio v0.6.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `ArmlabRadio` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `armlab_radio`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/beacon.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 radio.sync(6);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 let _ = radio.sync(6);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.38s
[INFO] running `Command { std: "docker" "inspect" "62ca17adab4d63e945137e9942586837f92661d03a39848bf49372fac7ea8fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62ca17adab4d63e945137e9942586837f92661d03a39848bf49372fac7ea8fd6", kill_on_drop: false }`
[INFO] [stdout] 62ca17adab4d63e945137e9942586837f92661d03a39848bf49372fac7ea8fd6