Dec 17 16:11:56.909 INFO checking samfoo/trees against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 16:11:56.909 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 16:11:57.334 INFO [stdout] 6c96311200d48b63ddf629991644f1ba06d3ce6934ba063f61a1aaaccbdd895b
Dec 17 16:11:57.338 INFO running `"docker" "start" "-a" "6c96311200d48b63ddf629991644f1ba06d3ce6934ba063f61a1aaaccbdd895b"`
Dec 17 16:11:58.711 INFO [stderr]     Checking libc v0.2.24
Dec 17 16:11:58.711 INFO [stderr]    Compiling matrixmultiply v0.1.13
Dec 17 16:11:58.712 INFO [stderr]    Compiling ndarray v0.9.1
Dec 17 16:11:58.713 INFO [stderr]     Checking bitflags v0.5.0
Dec 17 16:11:58.713 INFO [stderr]    Compiling cairo-rs v0.1.3
Dec 17 16:11:58.713 INFO [stderr]     Checking c_vec v1.2.1
Dec 17 16:11:58.713 INFO [stderr]    Compiling glib-sys v0.3.4
Dec 17 16:11:58.713 INFO [stderr]    Compiling gobject-sys v0.3.4
Dec 17 16:11:59.312 INFO [stderr]    Compiling cairo-sys-rs v0.3.4
Dec 17 16:11:59.312 INFO [stderr]     Checking num-complex v0.1.38
Dec 17 16:11:59.852 INFO [stderr]     Checking rand v0.3.15
Dec 17 16:12:03.300 INFO [stderr]     Checking glib v0.1.3
Dec 17 16:12:06.900 INFO [stderr]     Checking ndarray-rand v0.5.0
Dec 17 16:12:07.104 INFO [stderr]     Checking trees v0.1.0 (/opt/crater/workdir)
Dec 17 16:12:07.284 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 17 16:12:07.284 INFO [stderr]   --> src/main.rs:10:5
Dec 17 16:12:07.284 INFO [stderr]    |
Dec 17 16:12:07.284 INFO [stderr] 10 | use std::io::prelude::*;
Dec 17 16:12:07.284 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 17 16:12:07.284 INFO [stderr]    |
Dec 17 16:12:07.284 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 17 16:12:07.284 INFO [stderr] 
Dec 17 16:12:07.348 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 17 16:12:07.348 INFO [stderr]   --> src/main.rs:10:5
Dec 17 16:12:07.348 INFO [stderr]    |
Dec 17 16:12:07.348 INFO [stderr] 10 | use std::io::prelude::*;
Dec 17 16:12:07.348 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 17 16:12:07.348 INFO [stderr]    |
Dec 17 16:12:07.348 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 17 16:12:07.348 INFO [stderr] 
Dec 17 16:12:07.428 INFO [stderr] warning: unused variable: `ra`
Dec 17 16:12:07.428 INFO [stderr]   --> src/tree.rs:97:25
Dec 17 16:12:07.428 INFO [stderr]    |
Dec 17 16:12:07.428 INFO [stderr] 97 |                     let ra = 0.3 * PI * rng.next_f64() * l_or_r;
Dec 17 16:12:07.428 INFO [stderr]    |                         ^^ help: consider using `_ra` instead
Dec 17 16:12:07.428 INFO [stderr]    |
Dec 17 16:12:07.428 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 16:12:07.428 INFO [stderr] 
Dec 17 16:12:07.432 INFO [stderr] warning: unused variable: `ra`
Dec 17 16:12:07.432 INFO [stderr]   --> src/tree.rs:97:25
Dec 17 16:12:07.432 INFO [stderr]    |
Dec 17 16:12:07.432 INFO [stderr] 97 |                     let ra = 0.3 * PI * rng.next_f64() * l_or_r;
Dec 17 16:12:07.432 INFO [stderr]    |                         ^^ help: consider using `_ra` instead
Dec 17 16:12:07.432 INFO [stderr]    |
Dec 17 16:12:07.432 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 16:12:07.432 INFO [stderr] 
Dec 17 16:12:07.443 INFO [stderr] warning: variable does not need to be mutable
Dec 17 16:12:07.443 INFO [stderr]    --> src/main.rs:138:9
Dec 17 16:12:07.443 INFO [stderr]     |
Dec 17 16:12:07.443 INFO [stderr] 138 |     let mut output = File::create(output()).unwrap();
Dec 17 16:12:07.443 INFO [stderr]     |         ----^^^^^^
Dec 17 16:12:07.443 INFO [stderr]     |         |
Dec 17 16:12:07.443 INFO [stderr]     |         help: remove this `mut`
Dec 17 16:12:07.443 INFO [stderr]     |
Dec 17 16:12:07.443 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 16:12:07.443 INFO [stderr] 
Dec 17 16:12:07.448 INFO [stderr] warning: variable does not need to be mutable
Dec 17 16:12:07.448 INFO [stderr]    --> src/main.rs:138:9
Dec 17 16:12:07.448 INFO [stderr]     |
Dec 17 16:12:07.448 INFO [stderr] 138 |     let mut output = File::create(output()).unwrap();
Dec 17 16:12:07.448 INFO [stderr]     |         ----^^^^^^
Dec 17 16:12:07.448 INFO [stderr]     |         |
Dec 17 16:12:07.448 INFO [stderr]     |         help: remove this `mut`
Dec 17 16:12:07.448 INFO [stderr]     |
Dec 17 16:12:07.448 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 16:12:07.448 INFO [stderr] 
Dec 17 16:12:07.448 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 16:12:07.448 INFO [stderr]    --> src/main.rs:141:5
Dec 17 16:12:07.448 INFO [stderr]     |
Dec 17 16:12:07.448 INFO [stderr] 141 |     surface.write_to_png(&mut f);
Dec 17 16:12:07.448 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 16:12:07.448 INFO [stderr]     |
Dec 17 16:12:07.448 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 16:12:07.448 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 16:12:07.448 INFO [stderr] 
Dec 17 16:12:07.463 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 16:12:07.463 INFO [stderr]    --> src/main.rs:141:5
Dec 17 16:12:07.463 INFO [stderr]     |
Dec 17 16:12:07.463 INFO [stderr] 141 |     surface.write_to_png(&mut f);
Dec 17 16:12:07.463 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 16:12:07.463 INFO [stderr]     |
Dec 17 16:12:07.463 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 16:12:07.463 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 16:12:07.463 INFO [stderr] 
Dec 17 16:12:07.509 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.85s
Dec 17 16:12:08.314 INFO running `"docker" "inspect" "6c96311200d48b63ddf629991644f1ba06d3ce6934ba063f61a1aaaccbdd895b"`
Dec 17 16:12:08.603 INFO running `"docker" "rm" "-f" "6c96311200d48b63ddf629991644f1ba06d3ce6934ba063f61a1aaaccbdd895b"`
Dec 17 16:12:08.885 INFO [stdout] 6c96311200d48b63ddf629991644f1ba06d3ce6934ba063f61a1aaaccbdd895b