[INFO] cloning repository https://github.com/Jxspy/rust-qml
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jxspy/rust-qml" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJxspy%2Frust-qml", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJxspy%2Frust-qml'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88bc0311a06ac60e4d7b8567c1d121206943fa03
[INFO] testing Jxspy/rust-qml against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJxspy%2Frust-qml" "/workspace/builds/worker-64/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-64/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jxspy/rust-qml on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jxspy/rust-qml
[INFO] finished tweaking git repo https://github.com/Jxspy/rust-qml
[INFO] tweaked toml for git repo https://github.com/Jxspy/rust-qml written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] crate git repo https://github.com/Jxspy/rust-qml already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/alexcrichton/pkg-config-rs`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb169a0720ac42fc7aa1a51adfb821e7d5edbd41a7e84453cfa0bef14c2672b4
[INFO] running `Command { std: "docker" "start" "-a" "cb169a0720ac42fc7aa1a51adfb821e7d5edbd41a7e84453cfa0bef14c2672b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb169a0720ac42fc7aa1a51adfb821e7d5edbd41a7e84453cfa0bef14c2672b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb169a0720ac42fc7aa1a51adfb821e7d5edbd41a7e84453cfa0bef14c2672b4", kill_on_drop: false }`
[INFO] [stdout] cb169a0720ac42fc7aa1a51adfb821e7d5edbd41a7e84453cfa0bef14c2672b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8ea110fffb183b311495ddef1667f1cd1a5ef5f7ccee395685186a85b7a4864
[INFO] running `Command { std: "docker" "start" "-a" "e8ea110fffb183b311495ddef1667f1cd1a5ef5f7ccee395685186a85b7a4864", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.5 (https://github.com/alexcrichton/pkg-config-rs#42f1704b)
[INFO] [stderr]    Compiling libc v0.1.10
[INFO] [stderr]    Compiling qmlrs v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `QVariant`
[INFO] [stdout]  --> src/lib.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ffi::{QVariant, QrsEngine, QObject};
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]    --> src/variant.rs:12:45
[INFO] [stdout]     |
[INFO] [stdout] 12  |   fn from_qvariant(arg: *const QVariant) -> Option<Self>;
[INFO] [stdout]     |                                             ^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout] note: required by a bound in `Option`
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]     |
[INFO] [stdout] 12  |   fn from_qvariant(arg: *const QVariant) -> Option<Self> where Self: Sized;
[INFO] [stdout]     |                                                          +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `qmlrs` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "e8ea110fffb183b311495ddef1667f1cd1a5ef5f7ccee395685186a85b7a4864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8ea110fffb183b311495ddef1667f1cd1a5ef5f7ccee395685186a85b7a4864", kill_on_drop: false }`
[INFO] [stdout] e8ea110fffb183b311495ddef1667f1cd1a5ef5f7ccee395685186a85b7a4864