[INFO] updating cached repository https://github.com/marcusrossel/rust-arduino
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c234e9eac01bf5869cb4f572a427e9cadc01cd54
[INFO] checking marcusrossel/rust-arduino against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcusrossel%2Frust-arduino" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/marcusrossel/rust-arduino on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/marcusrossel/rust-arduino
[INFO] finished tweaking git repo https://github.com/marcusrossel/rust-arduino
[INFO] tweaked toml for git repo https://github.com/marcusrossel/rust-arduino written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/marcusrossel/rust-arduino already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b50f35f840034a437ac0e374cc9c8d7090d359c0aef6a5b99754d3fb7c4b4f2e
[INFO] running `"docker" "start" "-a" "b50f35f840034a437ac0e374cc9c8d7090d359c0aef6a5b99754d3fb7c4b4f2e"`
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]     Checking termios v0.1.0
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking serial v0.2.1
[INFO] [stderr]     Checking firmata v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]     Checking serde v1.0.92
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking arduinors v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `id`
[INFO] [stderr]   --> src/cli/core.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn id(&self) -> &str { &self.ID }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `version`
[INFO] [stderr]   --> src/cli/core.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn version(&self) -> &str { &self.Version }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `name`
[INFO] [stderr]   --> src/cli/core.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn name(&self) -> &str { &self.Name }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `install_core`
[INFO] [stderr]   --> src/cli/core.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn install_core(id: &str) -> Result<(), Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `update_core_index`
[INFO] [stderr]   --> src/cli/core.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub fn update_core_index() -> Result<(), Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `core_list_all`
[INFO] [stderr]   --> src/cli/core.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn core_list_all() -> Result<Vec<Core>, Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cores_from_json`
[INFO] [stderr]   --> src/cli/core.rs:71:4
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn cores_from_json(core_json: &str) -> Result<Vec<Core>, Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `id`
[INFO] [stderr]   --> src/cli/core.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn id(&self) -> &str { &self.ID }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `version`
[INFO] [stderr]   --> src/cli/core.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn version(&self) -> &str { &self.Version }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `name`
[INFO] [stderr]   --> src/cli/core.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn name(&self) -> &str { &self.Name }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `install_core`
[INFO] [stderr]   --> src/cli/core.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn install_core(id: &str) -> Result<(), Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `update_core_index`
[INFO] [stderr]   --> src/cli/core.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub fn update_core_index() -> Result<(), Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `core_list_all`
[INFO] [stderr]   --> src/cli/core.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn core_list_all() -> Result<Vec<Core>, Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.59s
[INFO] running `"docker" "inspect" "b50f35f840034a437ac0e374cc9c8d7090d359c0aef6a5b99754d3fb7c4b4f2e"`
[INFO] running `"docker" "rm" "-f" "b50f35f840034a437ac0e374cc9c8d7090d359c0aef6a5b99754d3fb7c4b4f2e"`
[INFO] [stdout] b50f35f840034a437ac0e374cc9c8d7090d359c0aef6a5b99754d3fb7c4b4f2e