[INFO] cloning repository https://github.com/marcusrossel/rust-arduino
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcusrossel/rust-arduino" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcusrossel%2Frust-arduino", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcusrossel%2Frust-arduino'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c234e9eac01bf5869cb4f572a427e9cadc01cd54
[INFO] checking marcusrossel/rust-arduino against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcusrossel%2Frust-arduino" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/marcusrossel/rust-arduino on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-6/source/Cargo.toml
[INFO] crate git repo https://github.com/marcusrossel/rust-arduino already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded firmata v0.2.0
[INFO] [stderr]   Downloaded termios v0.1.0
[INFO] [stderr]   Downloaded serial v0.2.1
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6bd0caf32c0044b84351f7b6ae616396330e224f9a2b6bed0b9804d04084da6c
[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" "6bd0caf32c0044b84351f7b6ae616396330e224f9a2b6bed0b9804d04084da6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bd0caf32c0044b84351f7b6ae616396330e224f9a2b6bed0b9804d04084da6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bd0caf32c0044b84351f7b6ae616396330e224f9a2b6bed0b9804d04084da6c", kill_on_drop: false }`
[INFO] [stdout] 6bd0caf32c0044b84351f7b6ae616396330e224f9a2b6bed0b9804d04084da6c
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d77eabadb78a3fb2cf61a7d8ae8d9dd19a4fdfef2b1d48f31d6ca4fccdf60481
[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" "d77eabadb78a3fb2cf61a7d8ae8d9dd19a4fdfef2b1d48f31d6ca4fccdf60481", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking termios v0.1.0
[INFO] [stderr]     Checking serial v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking firmata v0.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking crossbeam v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking arduinors v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]   --> src/cli/core.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn id(&self) -> &str { &self.ID }
[INFO] [stdout]    |            ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `version`
[INFO] [stdout]   --> src/cli/core.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn version(&self) -> &str { &self.Version }
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `name`
[INFO] [stdout]   --> src/cli/core.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn name(&self) -> &str { &self.Name }
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `install_core`
[INFO] [stdout]   --> src/cli/core.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn install_core(id: &str) -> Result<(), Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_core_index`
[INFO] [stdout]   --> src/cli/core.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn update_core_index() -> Result<(), Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `core_list_all`
[INFO] [stdout]   --> src/cli/core.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn core_list_all() -> Result<Vec<Core>, Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cores_from_json`
[INFO] [stdout]   --> src/cli/core.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn cores_from_json(core_json: &str) -> Result<Vec<Core>, Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]   --> src/cli/core.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn id(&self) -> &str { &self.ID }
[INFO] [stdout]    |            ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `version`
[INFO] [stdout]   --> src/cli/core.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn version(&self) -> &str { &self.Version }
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `name`
[INFO] [stdout]   --> src/cli/core.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn name(&self) -> &str { &self.Name }
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `install_core`
[INFO] [stdout]   --> src/cli/core.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn install_core(id: &str) -> Result<(), Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_core_index`
[INFO] [stdout]   --> src/cli/core.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn update_core_index() -> Result<(), Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `core_list_all`
[INFO] [stdout]   --> src/cli/core.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn core_list_all() -> Result<Vec<Core>, Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.17s
[INFO] running `Command { std: "docker" "inspect" "d77eabadb78a3fb2cf61a7d8ae8d9dd19a4fdfef2b1d48f31d6ca4fccdf60481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d77eabadb78a3fb2cf61a7d8ae8d9dd19a4fdfef2b1d48f31d6ca4fccdf60481", kill_on_drop: false }`
[INFO] [stdout] d77eabadb78a3fb2cf61a7d8ae8d9dd19a4fdfef2b1d48f31d6ca4fccdf60481