[INFO] cloning repository https://github.com/jasiek/rpncalc-firmware
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jasiek/rpncalc-firmware" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjasiek%2Frpncalc-firmware"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjasiek%2Frpncalc-firmware'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f53e511647f803f3d1cb253d052d9ba32c8d8983
[INFO] checking jasiek/rpncalc-firmware against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjasiek%2Frpncalc-firmware" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jasiek/rpncalc-firmware on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jasiek/rpncalc-firmware
[INFO] finished tweaking git repo https://github.com/jasiek/rpncalc-firmware
[INFO] tweaked toml for git repo https://github.com/jasiek/rpncalc-firmware written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jasiek/rpncalc-firmware already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 4ae0b887a7cd202303a4a50cbedebf7c01f2324845d1f1380157a2cd9ea52520
[INFO] running `"docker" "start" "-a" "4ae0b887a7cd202303a4a50cbedebf7c01f2324845d1f1380157a2cd9ea52520"`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cc v1.0.40
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking rpncalc-firmware v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/calc.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn peek(&self) -> T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `KEY_2`
[INFO] [stderr]   --> src/ui.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | const KEY_2: i32 = 50;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `KEY_3`
[INFO] [stderr]   --> src/ui.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | const KEY_3: i32 = 51;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `KEY_4`
[INFO] [stderr]   --> src/ui.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | const KEY_4: i32 = 52;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `KEY_5`
[INFO] [stderr]   --> src/ui.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | const KEY_5: i32 = 53;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `KEY_6`
[INFO] [stderr]   --> src/ui.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | const KEY_6: i32 = 54;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `KEY_7`
[INFO] [stderr]   --> src/ui.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | const KEY_7: i32 = 55;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `KEY_8`
[INFO] [stderr]   --> src/ui.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | const KEY_8: i32 = 56;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `feed_test_helper`
[INFO] [stderr]    --> src/ui.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn feed_test_helper(&mut self, chars: Vec<i32>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.87s
[INFO] running `"docker" "inspect" "4ae0b887a7cd202303a4a50cbedebf7c01f2324845d1f1380157a2cd9ea52520"`
[INFO] running `"docker" "rm" "-f" "4ae0b887a7cd202303a4a50cbedebf7c01f2324845d1f1380157a2cd9ea52520"`
[INFO] [stdout] 4ae0b887a7cd202303a4a50cbedebf7c01f2324845d1f1380157a2cd9ea52520