[INFO] cloning repository https://github.com/gi-rust/grust-proof
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gi-rust/grust-proof" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgi-rust%2Fgrust-proof", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgi-rust%2Fgrust-proof'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f3df4d31c57f5a8acc0acf1769144fbdd148ad1e
[INFO] checking gi-rust/grust-proof against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgi-rust%2Fgrust-proof" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gi-rust/grust-proof on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gi-rust/grust-proof
[INFO] finished tweaking git repo https://github.com/gi-rust/grust-proof
[INFO] tweaked toml for git repo https://github.com/gi-rust/grust-proof written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/gi-rust/grust-proof already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/gi-rust/grust.git`
[INFO] [stderr]     Updating git repository `https://github.com/gi-rust/glib-sys.git`
[INFO] [stderr]     Updating git repository `https://github.com/gi-rust/gobject-sys.git`
[INFO] [stderr]     Updating git repository `https://github.com/gi-rust/gio-sys.git`
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/gi-rust/grust.git`
[INFO] [stderr]     Updating git repository `https://github.com/gi-rust/glib-sys.git`
[INFO] [stderr]     Updating git repository `https://github.com/gi-rust/gobject-sys.git`
[INFO] [stderr]     Updating git repository `https://github.com/gi-rust/gio-sys.git`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--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 gtypes v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5307ba394ae95b7024542d834fed2debca81a5e1d9498dc3c7868a623b680284
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5307ba394ae95b7024542d834fed2debca81a5e1d9498dc3c7868a623b680284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5307ba394ae95b7024542d834fed2debca81a5e1d9498dc3c7868a623b680284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5307ba394ae95b7024542d834fed2debca81a5e1d9498dc3c7868a623b680284", kill_on_drop: false }`
[INFO] [stdout] 5307ba394ae95b7024542d834fed2debca81a5e1d9498dc3c7868a623b680284
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3afb8c309c204caf7c7b1de2b52a94be398615448aa45031202003bc49035e93
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3afb8c309c204caf7c7b1de2b52a94be398615448aa45031202003bc49035e93", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling glib-2-0-sys v0.47.0-dev (https://github.com/gi-rust/glib-sys.git#cd5bf488)
[INFO] [stderr]    Compiling gobject-2-0-sys v0.47.0-dev (https://github.com/gi-rust/gobject-sys.git#dc41c4cf)
[INFO] [stderr]    Compiling gio-2-0-sys v0.47.0-dev (https://github.com/gi-rust/gio-sys.git#3f8cec35)
[INFO] [stderr]     Checking gtypes v0.2.0
[INFO] [stderr]     Checking grust v0.4.0-dev (https://github.com/gi-rust/grust.git#f9d241e9)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/grust-a4872ac48faf825c/f9d241e/src/lib.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![feature(unsafe_no_drop_flag)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `unsafe_no_drop_flag` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/grust-a4872ac48faf825c/f9d241e/src/value.rs:42:3
[INFO] [stdout]    |
[INFO] [stdout] 42 | #[unsafe_no_drop_flag]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `grust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3afb8c309c204caf7c7b1de2b52a94be398615448aa45031202003bc49035e93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3afb8c309c204caf7c7b1de2b52a94be398615448aa45031202003bc49035e93", kill_on_drop: false }`
[INFO] [stdout] 3afb8c309c204caf7c7b1de2b52a94be398615448aa45031202003bc49035e93