[INFO] cloning repository https://github.com/richcallow/rradio_lcd_driver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/richcallow/rradio_lcd_driver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frichcallow%2Frradio_lcd_driver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frichcallow%2Frradio_lcd_driver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dfbfeae1522ebce1a4f8ad10b9d2957415d02440
[INFO] checking richcallow/rradio_lcd_driver against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frichcallow%2Frradio_lcd_driver" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/richcallow/rradio_lcd_driver on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/richcallow/rradio_lcd_driver
[INFO] finished tweaking git repo https://github.com/richcallow/rradio_lcd_driver
[INFO] tweaked toml for git repo https://github.com/richcallow/rradio_lcd_driver written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/richcallow/rradio_lcd_driver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "metadata" "--no-deps" "--format-version=1", 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] bb99deb957bf7fbbae8eaef33b86bf5d28fb38150a2a165d5b2e218f843e33ab
[INFO] running `Command { std: "docker" "start" "-a" "bb99deb957bf7fbbae8eaef33b86bf5d28fb38150a2a165d5b2e218f843e33ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb99deb957bf7fbbae8eaef33b86bf5d28fb38150a2a165d5b2e218f843e33ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb99deb957bf7fbbae8eaef33b86bf5d28fb38150a2a165d5b2e218f843e33ab", kill_on_drop: false }`
[INFO] [stdout] bb99deb957bf7fbbae8eaef33b86bf5d28fb38150a2a165d5b2e218f843e33ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c3c85c274aaae68d9d2b99fd99120cd167decb69e0868e18668664df15ed65e
[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" "7c3c85c274aaae68d9d2b99fd99120cd167decb69e0868e18668664df15ed65e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking pnet_base v0.26.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling anyhow v1.0.34
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling pnet v0.26.0
[INFO] [stderr]     Checking unidecode v0.3.0
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]     Checking pnet_macros_support v0.26.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking pnet_sys v0.26.0
[INFO] [stderr]     Checking clerk v0.4.0
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking rmp v0.8.9
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]     Checking gpio-cdev v0.4.0
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.26.0
[INFO] [stderr]     Checking ipnetwork v0.16.0
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking rradio-messages v0.6.3 (https://github.com/sammhicks/internet-radio-rs#9668b234)
[INFO] [stderr]     Checking rmp-serde v0.14.4
[INFO] [stderr]     Checking pnet_datalink v0.26.0
[INFO] [stderr]    Compiling pnet_packet v0.26.0
[INFO] [stderr]     Checking pnet_transport v0.26.0
[INFO] [stderr]     Checking rradio_lcd_driver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `current_track_index` is never read
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut current_track_index: usize = 0;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `track_position`
[INFO] [stdout]    --> src/main.rs:119:29
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 if let Some(track_position) = diff.track_position.into_option() {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_track_position`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_utf8`
[INFO] [stdout]    --> src/lcd_screen/mod.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn write_utf8(&mut self, line: LCDLineNumbers, position: u8, string: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_track_index` is never read
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut current_track_index: usize = 0;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `track_position`
[INFO] [stdout]    --> src/main.rs:119:29
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 if let Some(track_position) = diff.track_position.into_option() {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_track_position`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_utf8`
[INFO] [stdout]    --> src/lcd_screen/mod.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn write_utf8(&mut self, line: LCDLineNumbers, position: u8, string: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 44s
[INFO] running `Command { std: "docker" "inspect" "7c3c85c274aaae68d9d2b99fd99120cd167decb69e0868e18668664df15ed65e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c3c85c274aaae68d9d2b99fd99120cd167decb69e0868e18668664df15ed65e", kill_on_drop: false }`
[INFO] [stdout] 7c3c85c274aaae68d9d2b99fd99120cd167decb69e0868e18668664df15ed65e