[INFO] updating cached repository https://github.com/amarao/rust_july_2019_gtk_use
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9d46de5a1ca4ef811332687c8925865a6015385d
[INFO] checking amarao/rust_july_2019_gtk_use against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Famarao%2Frust_july_2019_gtk_use" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amarao/rust_july_2019_gtk_use on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/amarao/rust_july_2019_gtk_use
[INFO] finished tweaking git repo https://github.com/amarao/rust_july_2019_gtk_use
[INFO] tweaked toml for git repo https://github.com/amarao/rust_july_2019_gtk_use written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/amarao/rust_july_2019_gtk_use already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c866a8ad83aed27e6dde465ca0ef521663d963bcd2c561e1b848b00f9958423d
[INFO] running `"docker" "start" "-a" "c866a8ad83aed27e6dde465ca0ef521663d963bcd2c561e1b848b00f9958423d"`
[INFO] [stderr]     Checking glib-sys v0.8.0
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking gobject-sys v0.8.0
[INFO] [stderr]     Checking cairo-sys-rs v0.8.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking gio-sys v0.8.0
[INFO] [stderr]     Checking glib v0.7.1
[INFO] [stderr]     Checking pango-sys v0.8.0
[INFO] [stderr]     Checking atk-sys v0.8.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking cairo v0.0.4
[INFO] [stderr]     Checking gdk-pixbuf-sys v0.8.0
[INFO] [stderr]     Checking gdk-sys v0.8.0
[INFO] [stderr]     Checking gio v0.6.0
[INFO] [stderr]     Checking pango v0.6.0
[INFO] [stderr]     Checking cairo-rs v0.6.0
[INFO] [stderr]     Checking atk v0.6.0
[INFO] [stderr]     Checking gtk-sys v0.8.0
[INFO] [stderr]     Checking gdk-pixbuf v0.6.0
[INFO] [stderr]     Checking gdk v0.10.0
[INFO] [stderr]     Checking gtk v0.6.0
[INFO] [stderr]     Checking gtk_use v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `cairo`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use cairo;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BoxExt`, `ScrolledWindowExt`, `StateFlags`
[INFO] [stderr]   --> src/main.rs:10:11
[INFO] [stderr]    |
[INFO] [stderr] 10 | use gtk::{BoxExt, ContainerExt, DrawingArea, ScrolledWindowExt, StateFlags, WidgetExt};
[INFO] [stderr]    |           ^^^^^^                             ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `WindowExt`
[INFO] [stderr]   --> src/main.rs:12:11
[INFO] [stderr]    |
[INFO] [stderr] 12 | use gdk::{WindowExt};
[INFO] [stderr]    |           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let mut rng = RefCell::new(rand::thread_rng());
[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: unused import: `cairo`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use cairo;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BoxExt`, `ScrolledWindowExt`, `StateFlags`
[INFO] [stderr]   --> src/main.rs:10:11
[INFO] [stderr]    |
[INFO] [stderr] 10 | use gtk::{BoxExt, ContainerExt, DrawingArea, ScrolledWindowExt, StateFlags, WidgetExt};
[INFO] [stderr]    |           ^^^^^^                             ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `WindowExt`
[INFO] [stderr]   --> src/main.rs:12:11
[INFO] [stderr]    |
[INFO] [stderr] 12 | use gdk::{WindowExt};
[INFO] [stderr]    |           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let mut rng = RefCell::new(rand::thread_rng());
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1m 48s
[INFO] running `"docker" "inspect" "c866a8ad83aed27e6dde465ca0ef521663d963bcd2c561e1b848b00f9958423d"`
[INFO] running `"docker" "rm" "-f" "c866a8ad83aed27e6dde465ca0ef521663d963bcd2c561e1b848b00f9958423d"`
[INFO] [stdout] c866a8ad83aed27e6dde465ca0ef521663d963bcd2c561e1b848b00f9958423d