[INFO] cloning repository https://github.com/mppbtw/qqml
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mppbtw/qqml" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmppbtw%2Fqqml", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmppbtw%2Fqqml'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a468795766a073495d8417d475df3376195ae955
[INFO] checking mppbtw/qqml against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmppbtw%2Fqqml" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mppbtw/qqml 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/mppbtw/qqml
[INFO] finished tweaking git repo https://github.com/mppbtw/qqml
[INFO] tweaked toml for git repo https://github.com/mppbtw/qqml written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mppbtw/qqml 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 68fd4d02d7c2846ea359100f665e479a7ad169af1f7f35b1db0c98d28e3ac16b
[INFO] running `Command { std: "docker" "start" "-a" "68fd4d02d7c2846ea359100f665e479a7ad169af1f7f35b1db0c98d28e3ac16b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68fd4d02d7c2846ea359100f665e479a7ad169af1f7f35b1db0c98d28e3ac16b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68fd4d02d7c2846ea359100f665e479a7ad169af1f7f35b1db0c98d28e3ac16b", kill_on_drop: false }`
[INFO] [stdout] 68fd4d02d7c2846ea359100f665e479a7ad169af1f7f35b1db0c98d28e3ac16b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 454826b76bc4613604fe952ab89afee35e1105b3d27d8373ac3a1ddf882f4c5d
[INFO] running `Command { std: "docker" "start" "-a" "454826b76bc4613604fe952ab89afee35e1105b3d27d8373ac3a1ddf882f4c5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.86
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]    Compiling qqml v0.5.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: qqml@0.5.4: Compiler version doesn't include clang or GCC: "cc" "--version"
[INFO] [stderr] warning: qqml@0.5.4: Compiler version doesn't include clang or GCC: "c++" "--version"
[INFO] [stdout] warning: the item `JsonConstructionError` is imported redundantly
[INFO] [stdout]   --> lib/eval/state/mod.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use crate::json::parser::JsonConstructionError;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 23 | use crate::json::parser::*;
[INFO] [stdout]    |     ---------------------- the item `JsonConstructionError` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `JsonConstructionError` is imported redundantly
[INFO] [stdout]   --> lib/eval/state/mod.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use crate::json::parser::JsonConstructionError;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 23 | use crate::json::parser::*;
[INFO] [stdout]    |     ---------------------- the item `JsonConstructionError` is already imported here
[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 3.31s
[INFO] running `Command { std: "docker" "inspect" "454826b76bc4613604fe952ab89afee35e1105b3d27d8373ac3a1ddf882f4c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "454826b76bc4613604fe952ab89afee35e1105b3d27d8373ac3a1ddf882f4c5d", kill_on_drop: false }`
[INFO] [stdout] 454826b76bc4613604fe952ab89afee35e1105b3d27d8373ac3a1ddf882f4c5d