[INFO] updating cached repository CodeGradox/Rust-Sense-Hat
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CodeGradox/Rust-Sense-Hat
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CodeGradox/Rust-Sense-Hat" "work/ex/beta-1.38-1/sources/1.37.0/gh/CodeGradox/Rust-Sense-Hat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/CodeGradox/Rust-Sense-Hat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CodeGradox/Rust-Sense-Hat" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CodeGradox/Rust-Sense-Hat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CodeGradox/Rust-Sense-Hat'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7357bd2e3c08db1bc90085846e39bc48479dba95
[INFO] sha for GitHub repo CodeGradox/Rust-Sense-Hat: 7357bd2e3c08db1bc90085846e39bc48479dba95
[INFO] validating manifest of CodeGradox/Rust-Sense-Hat on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of CodeGradox/Rust-Sense-Hat on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing CodeGradox/Rust-Sense-Hat
[INFO] finished frobbing CodeGradox/Rust-Sense-Hat
[INFO] frobbed toml for CodeGradox/Rust-Sense-Hat written to work/ex/beta-1.38-1/sources/1.37.0/gh/CodeGradox/Rust-Sense-Hat/Cargo.toml
[INFO] started frobbing CodeGradox/Rust-Sense-Hat
[INFO] finished frobbing CodeGradox/Rust-Sense-Hat
[INFO] frobbed toml for CodeGradox/Rust-Sense-Hat written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CodeGradox/Rust-Sense-Hat/Cargo.toml
[INFO] crate CodeGradox/Rust-Sense-Hat already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing CodeGradox/Rust-Sense-Hat against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CodeGradox/Rust-Sense-Hat:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 7b085667d937c84c1fd2d928f843e41fc28ee79f5e8589e97ec72a6e225c1152
[INFO] running `"docker" "start" "-a" "7b085667d937c84c1fd2d928f843e41fc28ee79f5e8589e97ec72a6e225c1152"`
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling memmap v0.3.0
[INFO] [stderr]    Compiling framebuffer v0.1.4
[INFO] [stderr]    Compiling rust_sense_hat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let mut frame = self.get_frame();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let mut frame = self.get_frame();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let mut frame = self.get_frame();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.37s
[INFO] running `"docker" "inspect" "7b085667d937c84c1fd2d928f843e41fc28ee79f5e8589e97ec72a6e225c1152"`
[INFO] running `"docker" "rm" "-f" "7b085667d937c84c1fd2d928f843e41fc28ee79f5e8589e97ec72a6e225c1152"`
[INFO] [stdout] 7b085667d937c84c1fd2d928f843e41fc28ee79f5e8589e97ec72a6e225c1152
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CodeGradox/Rust-Sense-Hat:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 221132f17c4fb6d6a33decdf81d3f254079f49580ae7f8e13a94317eff0fa45b
[INFO] running `"docker" "start" "-a" "221132f17c4fb6d6a33decdf81d3f254079f49580ae7f8e13a94317eff0fa45b"`
[INFO] [stderr]    Compiling rust_sense_hat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0599]: no method named `draw_pixel` found for type `rust_sense_hat::LedDisplay` in the current scope
[INFO] [stderr]   --> examples/main.rs:20:21
[INFO] [stderr]    |
[INFO] [stderr] 20 |             display.draw_pixel(i, j, white);
[INFO] [stderr]    |                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `draw_pixel` found for type `rust_sense_hat::LedDisplay` in the current scope
[INFO] [stderr]   --> examples/main.rs:29:21
[INFO] [stderr]    |
[INFO] [stderr] 29 |             display.draw_pixel(j, i, red);
[INFO] [stderr]    |                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `draw_pixel` found for type `rust_sense_hat::LedDisplay` in the current scope
[INFO] [stderr]   --> examples/main.rs:38:21
[INFO] [stderr]    |
[INFO] [stderr] 38 |             display.draw_pixel(i, j, blue);
[INFO] [stderr]    |                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `draw_pixel` found for type `rust_sense_hat::LedDisplay` in the current scope
[INFO] [stderr]   --> examples/main.rs:47:21
[INFO] [stderr]    |
[INFO] [stderr] 47 |             display.draw_pixel(j, i, green);
[INFO] [stderr]    |                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `rust_sense_hat`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let mut frame = self.get_frame();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let mut frame = self.get_frame();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let mut frame = self.get_frame();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "221132f17c4fb6d6a33decdf81d3f254079f49580ae7f8e13a94317eff0fa45b"`
[INFO] running `"docker" "rm" "-f" "221132f17c4fb6d6a33decdf81d3f254079f49580ae7f8e13a94317eff0fa45b"`
[INFO] [stdout] 221132f17c4fb6d6a33decdf81d3f254079f49580ae7f8e13a94317eff0fa45b