[INFO] cloning repository https://github.com/Ikerlb/mandelrust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ikerlb/mandelrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIkerlb%2Fmandelrust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIkerlb%2Fmandelrust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cf4b920793631fb0f0f1f05fa77d69e020e02c71 [INFO] checking Ikerlb/mandelrust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIkerlb%2Fmandelrust" "/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/Ikerlb/mandelrust 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/Ikerlb/mandelrust [INFO] finished tweaking git repo https://github.com/Ikerlb/mandelrust [INFO] tweaked toml for git repo https://github.com/Ikerlb/mandelrust written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Ikerlb/mandelrust 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] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded num v0.4.0 [INFO] [stderr] Downloaded inflate v0.2.0 [INFO] [stderr] Downloaded image v0.13.0 [INFO] [stderr] Downloaded png v0.7.0 [INFO] [stderr] Downloaded num-complex v0.4.0 [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] bea77368d2f84110644ab4a02ca22eeecb48eafd6767b5995b36efbf07c4b07f [INFO] running `Command { std: "docker" "start" "-a" "bea77368d2f84110644ab4a02ca22eeecb48eafd6767b5995b36efbf07c4b07f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bea77368d2f84110644ab4a02ca22eeecb48eafd6767b5995b36efbf07c4b07f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bea77368d2f84110644ab4a02ca22eeecb48eafd6767b5995b36efbf07c4b07f", kill_on_drop: false }` [INFO] [stdout] bea77368d2f84110644ab4a02ca22eeecb48eafd6767b5995b36efbf07c4b07f [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] a502f2ce9b3fce045dfcd54299e67d3b1dfb65cbd348ca80fcc4fdf0b649fbdb [INFO] running `Command { std: "docker" "start" "-a" "a502f2ce9b3fce045dfcd54299e67d3b1dfb65cbd348ca80fcc4fdf0b649fbdb", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling libc v0.2.112 [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Compiling crossbeam-epoch v0.9.5 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling num-bigint v0.4.3 [INFO] [stderr] Compiling num-rational v0.4.0 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking deflate v0.7.20 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Checking crossbeam-deque v0.8.1 [INFO] [stderr] Checking bitflags v0.7.0 [INFO] [stderr] Checking inflate v0.2.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking gif v0.9.2 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking num-complex v0.4.0 [INFO] [stderr] Checking enum_primitive v0.1.1 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking png v0.7.0 [INFO] [stderr] Checking num v0.4.0 [INFO] [stderr] Checking jpeg-decoder v0.1.22 [INFO] [stderr] Checking image v0.13.0 [INFO] [stderr] Checking mandelbrot v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `AppSettings`, `SubCommand` [INFO] [stdout] --> src/main.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 6 | use clap::{Arg, App, SubCommand, AppSettings}; [INFO] [stdout] | ^^^^^^^^^^ ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `AppSettings`, `SubCommand` [INFO] [stdout] --> src/main.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 6 | use clap::{Arg, App, SubCommand, AppSettings}; [INFO] [stdout] | ^^^^^^^^^^ ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:87:5 [INFO] [stdout] | [INFO] [stdout] 87 | encode::write_image(&pixels, &filename, img_bounds); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 87 | let _ = encode::write_image(&pixels, &filename, img_bounds); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:87:5 [INFO] [stdout] | [INFO] [stdout] 87 | encode::write_image(&pixels, &filename, img_bounds); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 87 | let _ = encode::write_image(&pixels, &filename, img_bounds); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.30s [INFO] running `Command { std: "docker" "inspect" "a502f2ce9b3fce045dfcd54299e67d3b1dfb65cbd348ca80fcc4fdf0b649fbdb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a502f2ce9b3fce045dfcd54299e67d3b1dfb65cbd348ca80fcc4fdf0b649fbdb", kill_on_drop: false }` [INFO] [stdout] a502f2ce9b3fce045dfcd54299e67d3b1dfb65cbd348ca80fcc4fdf0b649fbdb [INFO] checking Ikerlb/mandelrust against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIkerlb%2Fmandelrust" "/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/Ikerlb/mandelrust 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/Ikerlb/mandelrust [INFO] finished tweaking git repo https://github.com/Ikerlb/mandelrust [INFO] tweaked toml for git repo https://github.com/Ikerlb/mandelrust written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Ikerlb/mandelrust 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] db87368f40f2042fce55e4bed3a5e8dfb705a8017e357025aad97309e0b27547 [INFO] running `Command { std: "docker" "start" "-a" "db87368f40f2042fce55e4bed3a5e8dfb705a8017e357025aad97309e0b27547", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "db87368f40f2042fce55e4bed3a5e8dfb705a8017e357025aad97309e0b27547", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "db87368f40f2042fce55e4bed3a5e8dfb705a8017e357025aad97309e0b27547", kill_on_drop: false }` [INFO] [stdout] db87368f40f2042fce55e4bed3a5e8dfb705a8017e357025aad97309e0b27547 [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] 1f94d788beab772b8d22b3292970bb63cac628c2ad12893b6c14aa8af021cf40 [INFO] running `Command { std: "docker" "start" "-a" "1f94d788beab772b8d22b3292970bb63cac628c2ad12893b6c14aa8af021cf40", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling libc v0.2.112 [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Compiling crossbeam-epoch v0.9.5 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling num-bigint v0.4.3 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling num-rational v0.4.0 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking deflate v0.7.20 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking inflate v0.2.0 [INFO] [stderr] Checking crossbeam-deque v0.8.1 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Checking bitflags v0.7.0 [INFO] [stderr] Checking gif v0.9.2 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking num-complex v0.4.0 [INFO] [stderr] Checking enum_primitive v0.1.1 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking png v0.7.0 [INFO] [stderr] Checking num v0.4.0 [INFO] [stderr] Checking jpeg-decoder v0.1.22 [INFO] [stderr] Checking image v0.13.0 [INFO] [stderr] Checking mandelbrot v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `AppSettings`, `SubCommand` [INFO] [stdout] --> src/main.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 6 | use clap::{Arg, App, SubCommand, AppSettings}; [INFO] [stdout] | ^^^^^^^^^^ ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `AppSettings`, `SubCommand` [INFO] [stdout] --> src/main.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 6 | use clap::{Arg, App, SubCommand, AppSettings}; [INFO] [stdout] | ^^^^^^^^^^ ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:87:5 [INFO] [stdout] | [INFO] [stdout] 87 | encode::write_image(&pixels, &filename, img_bounds); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 87 | let _ = encode::write_image(&pixels, &filename, img_bounds); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:87:5 [INFO] [stdout] | [INFO] [stdout] 87 | encode::write_image(&pixels, &filename, img_bounds); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 87 | let _ = encode::write_image(&pixels, &filename, img_bounds); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.12s [INFO] running `Command { std: "docker" "inspect" "1f94d788beab772b8d22b3292970bb63cac628c2ad12893b6c14aa8af021cf40", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1f94d788beab772b8d22b3292970bb63cac628c2ad12893b6c14aa8af021cf40", kill_on_drop: false }` [INFO] [stdout] 1f94d788beab772b8d22b3292970bb63cac628c2ad12893b6c14aa8af021cf40