[INFO] cloning repository https://github.com/chrisjdavies/mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chrisjdavies/mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisjdavies%2Fmandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisjdavies%2Fmandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2be42f42909e6be58411903ed02fa275d5bf675c
[INFO] checking chrisjdavies/mandelbrot against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisjdavies%2Fmandelbrot" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrisjdavies/mandelbrot 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/chrisjdavies/mandelbrot
[INFO] finished tweaking git repo https://github.com/chrisjdavies/mandelbrot
[INFO] tweaked toml for git repo https://github.com/chrisjdavies/mandelbrot written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/chrisjdavies/mandelbrot 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]     Updating git repository `https://github.com/chrisjdavies/gfx_demo.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-rational v0.4.1
[INFO] [stderr]   Downloaded num v0.4.1
[INFO] [stderr]   Downloaded num-iter v0.1.43
[INFO] [stderr]   Downloaded num-complex v0.4.4
[INFO] [stderr]   Downloaded num-integer v0.1.45
[INFO] [stderr]   Downloaded version-compare v0.0.10
[INFO] [stderr]   Downloaded sdl2 v0.34.5
[INFO] [stderr]   Downloaded num-bigint v0.4.4
[INFO] [stderr]   Downloaded sdl2-sys v0.34.5
[INFO] [stderr]   Downloaded libc v0.2.149
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4213751ec1eb5f6997ab76b264c95db3cc240f31841842b511b3931fd4c050d0
[INFO] running `Command { std: "docker" "start" "-a" "4213751ec1eb5f6997ab76b264c95db3cc240f31841842b511b3931fd4c050d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4213751ec1eb5f6997ab76b264c95db3cc240f31841842b511b3931fd4c050d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4213751ec1eb5f6997ab76b264c95db3cc240f31841842b511b3931fd4c050d0", kill_on_drop: false }`
[INFO] [stdout] 4213751ec1eb5f6997ab76b264c95db3cc240f31841842b511b3931fd4c050d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 70dd2bd5bb0a468c3aebd84f307b1eda1ef058c25db4650e82d51217451178b0
[INFO] running `Command { std: "docker" "start" "-a" "70dd2bd5bb0a468c3aebd84f307b1eda1ef058c25db4650e82d51217451178b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]    Compiling sdl2-sys v0.34.5
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]     Checking gfx_demo v0.3.0 (https://github.com/chrisjdavies/gfx_demo.git?tag=v0.3.0#2e102b9b)
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `gfx_demo` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use gfx_demo;
[INFO] [stdout]   |     ^^^^^^^^ the item `gfx_demo` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gfx_demo` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use gfx_demo;
[INFO] [stdout]   |     ^^^^^^^^ the item `gfx_demo` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.00s
[INFO] running `Command { std: "docker" "inspect" "70dd2bd5bb0a468c3aebd84f307b1eda1ef058c25db4650e82d51217451178b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70dd2bd5bb0a468c3aebd84f307b1eda1ef058c25db4650e82d51217451178b0", kill_on_drop: false }`
[INFO] [stdout] 70dd2bd5bb0a468c3aebd84f307b1eda1ef058c25db4650e82d51217451178b0
[INFO] checking chrisjdavies/mandelbrot against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisjdavies%2Fmandelbrot" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrisjdavies/mandelbrot 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/chrisjdavies/mandelbrot
[INFO] finished tweaking git repo https://github.com/chrisjdavies/mandelbrot
[INFO] tweaked toml for git repo https://github.com/chrisjdavies/mandelbrot written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/chrisjdavies/mandelbrot 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 3d16335a1049dfd526c0e075de262b5cdbe6b66e583900033161cc59be1a0d7d
[INFO] running `Command { std: "docker" "start" "-a" "3d16335a1049dfd526c0e075de262b5cdbe6b66e583900033161cc59be1a0d7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d16335a1049dfd526c0e075de262b5cdbe6b66e583900033161cc59be1a0d7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d16335a1049dfd526c0e075de262b5cdbe6b66e583900033161cc59be1a0d7d", kill_on_drop: false }`
[INFO] [stdout] 3d16335a1049dfd526c0e075de262b5cdbe6b66e583900033161cc59be1a0d7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 14a6504c30267f7dae326036562081d5ca1d945ba3720969a52460798a9e3b81
[INFO] running `Command { std: "docker" "start" "-a" "14a6504c30267f7dae326036562081d5ca1d945ba3720969a52460798a9e3b81", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]    Compiling sdl2-sys v0.34.5
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]     Checking gfx_demo v0.3.0 (https://github.com/chrisjdavies/gfx_demo.git?tag=v0.3.0#2e102b9b)
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `gfx_demo` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use gfx_demo;
[INFO] [stdout]   |     ^^^^^^^^ the item `gfx_demo` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gfx_demo` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use gfx_demo;
[INFO] [stdout]   |     ^^^^^^^^ the item `gfx_demo` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.59s
[INFO] running `Command { std: "docker" "inspect" "14a6504c30267f7dae326036562081d5ca1d945ba3720969a52460798a9e3b81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14a6504c30267f7dae326036562081d5ca1d945ba3720969a52460798a9e3b81", kill_on_drop: false }`
[INFO] [stdout] 14a6504c30267f7dae326036562081d5ca1d945ba3720969a52460798a9e3b81