Dec 19 09:29:14.659 INFO checking samfoo/trees against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 09:29:14.659 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/samfoo/trees:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:29:15.046 INFO [stdout] 3d066d601bc6bf6e25ee77d0e4a348e3e2361a0783fd9d91280a20256c6364f6
Dec 19 09:29:15.048 INFO running `"docker" "start" "-a" "3d066d601bc6bf6e25ee77d0e4a348e3e2361a0783fd9d91280a20256c6364f6"`
Dec 19 09:29:16.424 INFO [stderr]    Compiling matrixmultiply v0.1.13
Dec 19 09:29:16.424 INFO [stderr]    Compiling ndarray v0.9.1
Dec 19 09:29:16.424 INFO [stderr]     Checking either v1.1.0
Dec 19 09:29:16.425 INFO [stderr]    Compiling cairo-rs v0.1.3
Dec 19 09:29:16.425 INFO [stderr]     Checking bitflags v0.5.0
Dec 19 09:29:16.425 INFO [stderr]     Checking c_vec v1.2.1
Dec 19 09:29:16.425 INFO [stderr]    Compiling glib-sys v0.3.4
Dec 19 09:29:16.437 INFO [stderr]    Compiling gobject-sys v0.3.4
Dec 19 09:29:17.035 INFO [stderr]    Compiling cairo-sys-rs v0.3.4
Dec 19 09:29:17.965 INFO [stderr]     Checking num-complex v0.1.38
Dec 19 09:29:18.004 INFO [stderr]     Checking itertools v0.6.0
Dec 19 09:29:23.638 INFO [stderr]     Checking glib v0.1.3
Dec 19 09:29:28.972 INFO [stderr]     Checking ndarray-rand v0.5.0
Dec 19 09:29:29.209 INFO [stderr]     Checking trees v0.1.0 (/opt/crater/workdir)
Dec 19 09:29:29.464 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 09:29:29.464 INFO [stderr]   --> src/main.rs:10:5
Dec 19 09:29:29.464 INFO [stderr]    |
Dec 19 09:29:29.464 INFO [stderr] 10 | use std::io::prelude::*;
Dec 19 09:29:29.464 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 09:29:29.464 INFO [stderr]    |
Dec 19 09:29:29.464 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 09:29:29.464 INFO [stderr] 
Dec 19 09:29:29.496 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 09:29:29.496 INFO [stderr]   --> src/main.rs:10:5
Dec 19 09:29:29.496 INFO [stderr]    |
Dec 19 09:29:29.496 INFO [stderr] 10 | use std::io::prelude::*;
Dec 19 09:29:29.496 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 09:29:29.496 INFO [stderr]    |
Dec 19 09:29:29.496 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 09:29:29.496 INFO [stderr] 
Dec 19 09:29:29.620 INFO [stderr] warning: unused variable: `ra`
Dec 19 09:29:29.620 INFO [stderr]   --> src/tree.rs:97:25
Dec 19 09:29:29.620 INFO [stderr]    |
Dec 19 09:29:29.620 INFO [stderr] 97 |                     let ra = 0.3 * PI * rng.next_f64() * l_or_r;
Dec 19 09:29:29.620 INFO [stderr]    |                         ^^ help: consider using `_ra` instead
Dec 19 09:29:29.620 INFO [stderr]    |
Dec 19 09:29:29.620 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 09:29:29.620 INFO [stderr] 
Dec 19 09:29:29.620 INFO [stderr] warning: unused variable: `ra`
Dec 19 09:29:29.620 INFO [stderr]   --> src/tree.rs:97:25
Dec 19 09:29:29.620 INFO [stderr]    |
Dec 19 09:29:29.620 INFO [stderr] 97 |                     let ra = 0.3 * PI * rng.next_f64() * l_or_r;
Dec 19 09:29:29.620 INFO [stderr]    |                         ^^ help: consider using `_ra` instead
Dec 19 09:29:29.620 INFO [stderr]    |
Dec 19 09:29:29.620 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 09:29:29.620 INFO [stderr] 
Dec 19 09:29:29.632 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:29:29.632 INFO [stderr]    --> src/main.rs:138:9
Dec 19 09:29:29.632 INFO [stderr]     |
Dec 19 09:29:29.632 INFO [stderr] 138 |     let mut output = File::create(output()).unwrap();
Dec 19 09:29:29.632 INFO [stderr]     |         ----^^^^^^
Dec 19 09:29:29.632 INFO [stderr]     |         |
Dec 19 09:29:29.632 INFO [stderr]     |         help: remove this `mut`
Dec 19 09:29:29.632 INFO [stderr]     |
Dec 19 09:29:29.632 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 09:29:29.632 INFO [stderr] 
Dec 19 09:29:29.636 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:29:29.636 INFO [stderr]    --> src/main.rs:138:9
Dec 19 09:29:29.636 INFO [stderr]     |
Dec 19 09:29:29.636 INFO [stderr] 138 |     let mut output = File::create(output()).unwrap();
Dec 19 09:29:29.636 INFO [stderr]     |         ----^^^^^^
Dec 19 09:29:29.636 INFO [stderr]     |         |
Dec 19 09:29:29.636 INFO [stderr]     |         help: remove this `mut`
Dec 19 09:29:29.636 INFO [stderr]     |
Dec 19 09:29:29.636 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 09:29:29.636 INFO [stderr] 
Dec 19 09:29:29.644 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 09:29:29.644 INFO [stderr]    --> src/main.rs:141:5
Dec 19 09:29:29.644 INFO [stderr]     |
Dec 19 09:29:29.644 INFO [stderr] 141 |     surface.write_to_png(&mut f);
Dec 19 09:29:29.644 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 09:29:29.644 INFO [stderr]     |
Dec 19 09:29:29.644 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 09:29:29.644 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 09:29:29.644 INFO [stderr] 
Dec 19 09:29:29.648 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 09:29:29.648 INFO [stderr]    --> src/main.rs:141:5
Dec 19 09:29:29.648 INFO [stderr]     |
Dec 19 09:29:29.648 INFO [stderr] 141 |     surface.write_to_png(&mut f);
Dec 19 09:29:29.648 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 09:29:29.648 INFO [stderr]     |
Dec 19 09:29:29.648 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 09:29:29.648 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 09:29:29.648 INFO [stderr] 
Dec 19 09:29:29.689 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.39s
Dec 19 09:29:30.609 INFO running `"docker" "inspect" "3d066d601bc6bf6e25ee77d0e4a348e3e2361a0783fd9d91280a20256c6364f6"`
Dec 19 09:29:30.895 INFO running `"docker" "rm" "-f" "3d066d601bc6bf6e25ee77d0e4a348e3e2361a0783fd9d91280a20256c6364f6"`
Dec 19 09:29:31.156 INFO [stdout] 3d066d601bc6bf6e25ee77d0e4a348e3e2361a0783fd9d91280a20256c6364f6