Dec 19 09:29:14.380 INFO checking samfoo/trees against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 09:29:14.380 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:29:14.868 INFO [stdout] 20242e7fc284270c0fcff9d6390d746f931d3ad52222a06c0bc501e43fb1ebf3
Dec 19 09:29:14.876 INFO running `"docker" "start" "-a" "20242e7fc284270c0fcff9d6390d746f931d3ad52222a06c0bc501e43fb1ebf3"`
Dec 19 09:29:16.210 INFO [stderr]    Compiling matrixmultiply v0.1.13
Dec 19 09:29:16.210 INFO [stderr]    Compiling cairo-rs v0.1.3
Dec 19 09:29:16.210 INFO [stderr]    Compiling cairo-sys-rs v0.3.4
Dec 19 09:29:16.210 INFO [stderr]     Checking itertools v0.6.0
Dec 19 09:29:16.210 INFO [stderr]     Checking num-complex v0.1.38
Dec 19 09:29:20.419 INFO [stderr]     Checking ndarray v0.9.1
Dec 19 09:29:26.447 INFO [stderr]     Checking ndarray-rand v0.5.0
Dec 19 09:29:26.643 INFO [stderr]     Checking trees v0.1.0 (/opt/crater/workdir)
Dec 19 09:29:26.789 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 09:29:26.789 INFO [stderr]   --> src/main.rs:10:5
Dec 19 09:29:26.789 INFO [stderr]    |
Dec 19 09:29:26.789 INFO [stderr] 10 | use std::io::prelude::*;
Dec 19 09:29:26.789 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 09:29:26.789 INFO [stderr]    |
Dec 19 09:29:26.789 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 09:29:26.789 INFO [stderr] 
Dec 19 09:29:26.839 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 09:29:26.839 INFO [stderr]   --> src/main.rs:10:5
Dec 19 09:29:26.839 INFO [stderr]    |
Dec 19 09:29:26.839 INFO [stderr] 10 | use std::io::prelude::*;
Dec 19 09:29:26.839 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 09:29:26.839 INFO [stderr]    |
Dec 19 09:29:26.840 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 09:29:26.840 INFO [stderr] 
Dec 19 09:29:26.900 INFO [stderr] warning: unused variable: `ra`
Dec 19 09:29:26.900 INFO [stderr]   --> src/tree.rs:97:25
Dec 19 09:29:26.900 INFO [stderr]    |
Dec 19 09:29:26.900 INFO [stderr] 97 |                     let ra = 0.3 * PI * rng.next_f64() * l_or_r;
Dec 19 09:29:26.900 INFO [stderr]    |                         ^^ help: consider using `_ra` instead
Dec 19 09:29:26.900 INFO [stderr]    |
Dec 19 09:29:26.900 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 09:29:26.900 INFO [stderr] 
Dec 19 09:29:26.900 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:29:26.900 INFO [stderr]    --> src/main.rs:138:9
Dec 19 09:29:26.900 INFO [stderr]     |
Dec 19 09:29:26.900 INFO [stderr] 138 |     let mut output = File::create(output()).unwrap();
Dec 19 09:29:26.900 INFO [stderr]     |         ----^^^^^^
Dec 19 09:29:26.900 INFO [stderr]     |         |
Dec 19 09:29:26.900 INFO [stderr]     |         help: remove this `mut`
Dec 19 09:29:26.900 INFO [stderr]     |
Dec 19 09:29:26.900 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 09:29:26.900 INFO [stderr] 
Dec 19 09:29:26.900 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 09:29:26.900 INFO [stderr]    --> src/main.rs:141:5
Dec 19 09:29:26.900 INFO [stderr]     |
Dec 19 09:29:26.900 INFO [stderr] 141 |     surface.write_to_png(&mut f);
Dec 19 09:29:26.900 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 09:29:26.900 INFO [stderr]     |
Dec 19 09:29:26.900 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 09:29:26.900 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 09:29:26.900 INFO [stderr] 
Dec 19 09:29:27.129 INFO [stderr] warning: unused variable: `ra`
Dec 19 09:29:27.129 INFO [stderr]   --> src/tree.rs:97:25
Dec 19 09:29:27.129 INFO [stderr]    |
Dec 19 09:29:27.129 INFO [stderr] 97 |                     let ra = 0.3 * PI * rng.next_f64() * l_or_r;
Dec 19 09:29:27.130 INFO [stderr]    |                         ^^ help: consider using `_ra` instead
Dec 19 09:29:27.130 INFO [stderr]    |
Dec 19 09:29:27.130 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 09:29:27.130 INFO [stderr] 
Dec 19 09:29:27.144 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:29:27.144 INFO [stderr]    --> src/main.rs:138:9
Dec 19 09:29:27.144 INFO [stderr]     |
Dec 19 09:29:27.144 INFO [stderr] 138 |     let mut output = File::create(output()).unwrap();
Dec 19 09:29:27.145 INFO [stderr]     |         ----^^^^^^
Dec 19 09:29:27.145 INFO [stderr]     |         |
Dec 19 09:29:27.145 INFO [stderr]     |         help: remove this `mut`
Dec 19 09:29:27.145 INFO [stderr]     |
Dec 19 09:29:27.145 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 09:29:27.145 INFO [stderr] 
Dec 19 09:29:27.145 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 09:29:27.145 INFO [stderr]    --> src/main.rs:141:5
Dec 19 09:29:27.145 INFO [stderr]     |
Dec 19 09:29:27.145 INFO [stderr] 141 |     surface.write_to_png(&mut f);
Dec 19 09:29:27.145 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 09:29:27.145 INFO [stderr]     |
Dec 19 09:29:27.145 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 09:29:27.145 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 09:29:27.145 INFO [stderr] 
Dec 19 09:29:27.212 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.13s
Dec 19 09:29:27.904 INFO running `"docker" "inspect" "20242e7fc284270c0fcff9d6390d746f931d3ad52222a06c0bc501e43fb1ebf3"`
Dec 19 09:29:28.100 INFO running `"docker" "rm" "-f" "20242e7fc284270c0fcff9d6390d746f931d3ad52222a06c0bc501e43fb1ebf3"`
Dec 19 09:29:28.217 INFO [stdout] 20242e7fc284270c0fcff9d6390d746f931d3ad52222a06c0bc501e43fb1ebf3