[INFO] updating cached repository hanhossain/rusty-edison
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hanhossain/rusty-edison
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hanhossain/rusty-edison" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hanhossain/rusty-edison"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hanhossain/rusty-edison'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hanhossain/rusty-edison" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/hanhossain/rusty-edison"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/hanhossain/rusty-edison'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 87932062d7f33d5910ff73da78938b0b0867c0cd
[INFO] sha for GitHub repo hanhossain/rusty-edison: 87932062d7f33d5910ff73da78938b0b0867c0cd
[INFO] validating manifest of hanhossain/rusty-edison on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hanhossain/rusty-edison on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hanhossain/rusty-edison
[INFO] finished frobbing hanhossain/rusty-edison
[INFO] frobbed toml for hanhossain/rusty-edison written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hanhossain/rusty-edison/Cargo.toml
[INFO] started frobbing hanhossain/rusty-edison
[INFO] finished frobbing hanhossain/rusty-edison
[INFO] frobbed toml for hanhossain/rusty-edison written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/hanhossain/rusty-edison/Cargo.toml
[INFO] crate hanhossain/rusty-edison already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking hanhossain/rusty-edison against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-4/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hanhossain/rusty-edison:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 460e54149091515748ac310a1ff01d3eadaba994a1495db15141f9081180c11e
[INFO] running `"docker" "start" "-a" "460e54149091515748ac310a1ff01d3eadaba994a1495db15141f9081180c11e"`
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking sysfs_gpio v0.5.4
[INFO] [stderr]     Checking rusty-edison v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `sysfs_gpio::Direction`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use sysfs_gpio::Direction;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DigitalPin`
[INFO] [stderr]  --> src/edison/mod.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct DigitalPin {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/edison/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(shield_pin: u8, direction: Direction, tristate: &mut Tristate) -> DigitalPin {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read`
[INFO] [stderr]    --> src/edison/mod.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn read(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]    --> src/edison/mod.rs:139:5
[INFO] [stderr]     |
[INFO] [stderr] 139 |     pub fn write(&self, value: u8) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `enable_output`
[INFO] [stderr]    --> src/edison/mod.rs:267:5
[INFO] [stderr]     |
[INFO] [stderr] 267 |     fn enable_output(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `blink`
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn blink(pin: &DigitalPin) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sysfs_gpio::Direction`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use sysfs_gpio::Direction;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DigitalPin`
[INFO] [stderr]  --> src/edison/mod.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct DigitalPin {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/edison/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(shield_pin: u8, direction: Direction, tristate: &mut Tristate) -> DigitalPin {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read`
[INFO] [stderr]    --> src/edison/mod.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn read(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]    --> src/edison/mod.rs:139:5
[INFO] [stderr]     |
[INFO] [stderr] 139 |     pub fn write(&self, value: u8) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `enable_output`
[INFO] [stderr]    --> src/edison/mod.rs:267:5
[INFO] [stderr]     |
[INFO] [stderr] 267 |     fn enable_output(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `blink`
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn blink(pin: &DigitalPin) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.79s
[INFO] running `"docker" "inspect" "460e54149091515748ac310a1ff01d3eadaba994a1495db15141f9081180c11e"`
[INFO] running `"docker" "rm" "-f" "460e54149091515748ac310a1ff01d3eadaba994a1495db15141f9081180c11e"`
[INFO] [stdout] 460e54149091515748ac310a1ff01d3eadaba994a1495db15141f9081180c11e