[INFO] cloning repository https://github.com/joebentley/rust-chip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joebentley/rust-chip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoebentley%2Frust-chip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoebentley%2Frust-chip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 521b78293ee1cc346bbf4034f119493ce792ac2a
[INFO] checking joebentley/rust-chip8 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoebentley%2Frust-chip8" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joebentley/rust-chip8 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/joebentley/rust-chip8
[INFO] finished tweaking git repo https://github.com/joebentley/rust-chip8
[INFO] tweaked toml for git repo https://github.com/joebentley/rust-chip8 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/joebentley/rust-chip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cfg-if v0.1.4
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded rand_core v0.2.1
[INFO] [stderr]   Downloaded num-traits v0.2.5
[INFO] [stderr]   Downloaded rand v0.5.2
[INFO] [stderr]   Downloaded libc v0.2.42
[INFO] [stderr]   Downloaded winapi v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7f145fa1bd4ccdfc5206ca78742bcbadcce1d8a76f111f64980fb22c324824a
[INFO] running `Command { std: "docker" "start" "-a" "a7f145fa1bd4ccdfc5206ca78742bcbadcce1d8a76f111f64980fb22c324824a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7f145fa1bd4ccdfc5206ca78742bcbadcce1d8a76f111f64980fb22c324824a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7f145fa1bd4ccdfc5206ca78742bcbadcce1d8a76f111f64980fb22c324824a", kill_on_drop: false }`
[INFO] [stdout] a7f145fa1bd4ccdfc5206ca78742bcbadcce1d8a76f111f64980fb22c324824a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1f64fd72d6faa77ecacbdba8b398628f65cc4adce7f3deb62e64cc724b40d83
[INFO] running `Command { std: "docker" "start" "-a" "b1f64fd72d6faa77ecacbdba8b398628f65cc4adce7f3deb62e64cc724b40d83", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]    Compiling sdl2-sys v0.31.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking rand v0.5.2
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking sdl2 v0.31.0
[INFO] [stderr]     Checking rust-chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/cpu.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate rand;
[INFO] [stdout]   | ------------------ the item `rand` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `termion` is imported redundantly
[INFO] [stdout]  --> src/interface/termion.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use termion;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate termion;
[INFO] [stdout]   | --------------------- the item `termion` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `sdl2` is imported redundantly
[INFO] [stdout]  --> src/interface/sdl.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sdl2;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate sdl2;
[INFO] [stdout]   | ------------------ the item `sdl2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/cpu.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate rand;
[INFO] [stdout]   | ------------------ the item `rand` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `termion` is imported redundantly
[INFO] [stdout]  --> src/interface/termion.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use termion;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate termion;
[INFO] [stdout]   | --------------------- the item `termion` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `sdl2` is imported redundantly
[INFO] [stdout]  --> src/interface/sdl.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sdl2;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate sdl2;
[INFO] [stdout]   | ------------------ the item `sdl2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.37s
[INFO] running `Command { std: "docker" "inspect" "b1f64fd72d6faa77ecacbdba8b398628f65cc4adce7f3deb62e64cc724b40d83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1f64fd72d6faa77ecacbdba8b398628f65cc4adce7f3deb62e64cc724b40d83", kill_on_drop: false }`
[INFO] [stdout] b1f64fd72d6faa77ecacbdba8b398628f65cc4adce7f3deb62e64cc724b40d83
[INFO] checking joebentley/rust-chip8 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoebentley%2Frust-chip8" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joebentley/rust-chip8 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/joebentley/rust-chip8
[INFO] finished tweaking git repo https://github.com/joebentley/rust-chip8
[INFO] tweaked toml for git repo https://github.com/joebentley/rust-chip8 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/joebentley/rust-chip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 385c3ad23544530fd4c06c73dbd37cbe02365081fe2403f298438636cbbe88a1
[INFO] running `Command { std: "docker" "start" "-a" "385c3ad23544530fd4c06c73dbd37cbe02365081fe2403f298438636cbbe88a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "385c3ad23544530fd4c06c73dbd37cbe02365081fe2403f298438636cbbe88a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "385c3ad23544530fd4c06c73dbd37cbe02365081fe2403f298438636cbbe88a1", kill_on_drop: false }`
[INFO] [stdout] 385c3ad23544530fd4c06c73dbd37cbe02365081fe2403f298438636cbbe88a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0490f8d773946c15b3e9485b1cfe50e9730333bdf88adb0d8b593415d0b4c35
[INFO] running `Command { std: "docker" "start" "-a" "b0490f8d773946c15b3e9485b1cfe50e9730333bdf88adb0d8b593415d0b4c35", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]    Compiling sdl2-sys v0.31.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking rand v0.5.2
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking sdl2 v0.31.0
[INFO] [stderr]     Checking rust-chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/cpu.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate rand;
[INFO] [stdout]   | ------------------ the item `rand` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `termion` is imported redundantly
[INFO] [stdout]  --> src/interface/termion.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use termion;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate termion;
[INFO] [stdout]   | --------------------- the item `termion` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `sdl2` is imported redundantly
[INFO] [stdout]  --> src/interface/sdl.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sdl2;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate sdl2;
[INFO] [stdout]   | ------------------ the item `sdl2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/cpu.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate rand;
[INFO] [stdout]   | ------------------ the item `rand` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `termion` is imported redundantly
[INFO] [stdout]  --> src/interface/termion.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use termion;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate termion;
[INFO] [stdout]   | --------------------- the item `termion` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `sdl2` is imported redundantly
[INFO] [stdout]  --> src/interface/sdl.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sdl2;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate sdl2;
[INFO] [stdout]   | ------------------ the item `sdl2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.35s
[INFO] running `Command { std: "docker" "inspect" "b0490f8d773946c15b3e9485b1cfe50e9730333bdf88adb0d8b593415d0b4c35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0490f8d773946c15b3e9485b1cfe50e9730333bdf88adb0d8b593415d0b4c35", kill_on_drop: false }`
[INFO] [stdout] b0490f8d773946c15b3e9485b1cfe50e9730333bdf88adb0d8b593415d0b4c35