[INFO] cloning repository https://github.com/emre-ergun/Rust-Qt-Demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emre-ergun/Rust-Qt-Demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femre-ergun%2FRust-Qt-Demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femre-ergun%2FRust-Qt-Demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8007d7fa014d94b81854328dc69e9cf5330e4383
[INFO] checking emre-ergun/Rust-Qt-Demo against master#a42d94ebb883116f2867cbe3016d9bde9ca6d3f7 for pr-117593
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femre-ergun%2FRust-Qt-Demo" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emre-ergun/Rust-Qt-Demo on toolchain a42d94ebb883116f2867cbe3016d9bde9ca6d3f7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emre-ergun/Rust-Qt-Demo
[INFO] finished tweaking git repo https://github.com/emre-ergun/Rust-Qt-Demo
[INFO] tweaked toml for git repo https://github.com/emre-ergun/Rust-Qt-Demo written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/emre-ergun/Rust-Qt-Demo 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" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking emre-ergun/Rust-Qt-Demo against try#031b389f0c31c0f91c9464d26313ae513dbe8d36 for pr-117593
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femre-ergun%2FRust-Qt-Demo" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emre-ergun/Rust-Qt-Demo on toolchain 031b389f0c31c0f91c9464d26313ae513dbe8d36
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emre-ergun/Rust-Qt-Demo
[INFO] finished tweaking git repo https://github.com/emre-ergun/Rust-Qt-Demo
[INFO] tweaked toml for git repo https://github.com/emre-ergun/Rust-Qt-Demo written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/emre-ergun/Rust-Qt-Demo 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" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cxx-qt-build v0.5.3
[INFO] [stderr]   Downloaded versions v4.1.0
[INFO] [stderr]   Downloaded cxx-qt-lib-headers v0.5.3
[INFO] [stderr]   Downloaded cxx-qt v0.5.3
[INFO] [stderr]   Downloaded cxx-qt-gen v0.5.3
[INFO] [stderr]   Downloaded cxx-gen v0.7.95
[INFO] [stderr]   Downloaded cxx-qt-lib v0.5.3
[INFO] [stderr]   Downloaded qt-build-utils v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4779246a4dd0be83aba54fdf37c3a763515f96e8acebf98f2f4c8d7bf5ea8e1
[INFO] running `Command { std: "docker" "start" "-a" "a4779246a4dd0be83aba54fdf37c3a763515f96e8acebf98f2f4c8d7bf5ea8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4779246a4dd0be83aba54fdf37c3a763515f96e8acebf98f2f4c8d7bf5ea8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4779246a4dd0be83aba54fdf37c3a763515f96e8acebf98f2f4c8d7bf5ea8e1", kill_on_drop: false }`
[INFO] [stdout] a4779246a4dd0be83aba54fdf37c3a763515f96e8acebf98f2f4c8d7bf5ea8e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af70317768431feac5552b469252e80d25ba262930b17799c71f29c7469b6d4e
[INFO] running `Command { std: "docker" "start" "-a" "af70317768431feac5552b469252e80d25ba262930b17799c71f29c7469b6d4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling once_cell v1.17.2
[INFO] [stderr]    Compiling termcolor v1.2.0
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling scratch v1.0.5
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.59/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cxx-qt-lib-headers v0.5.3
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.95
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "af70317768431feac5552b469252e80d25ba262930b17799c71f29c7469b6d4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af70317768431feac5552b469252e80d25ba262930b17799c71f29c7469b6d4e", kill_on_drop: false }`
[INFO] [stdout] af70317768431feac5552b469252e80d25ba262930b17799c71f29c7469b6d4e