[INFO] cloning repository https://github.com/synczer0/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/synczer0/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsynczer0%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsynczer0%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7c02ba7959c716055889bff6b19e7dbf2c0ace4
[INFO] checking synczer0/learn-rust against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsynczer0%2Flearn-rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/synczer0/learn-rust on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/synczer0/learn-rust
[INFO] removed path dependency restaurant from git repo https://github.com/synczer0/learn-rust
[INFO] finished tweaking git repo https://github.com/synczer0/learn-rust
[INFO] tweaked toml for git repo https://github.com/synczer0/learn-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/synczer0/learn-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (restaurant) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/microsoft/winrt-rs`
[INFO] [stderr] error: the lock file /workspace/builds/worker-4/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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/microsoft/winrt-rs`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (restaurant) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a9ec4988c55cdd1a68105b5ad8d673b4c5e8df4188e83919b0fe297a0391490a
[INFO] running `Command { std: "docker" "start" "-a" "a9ec4988c55cdd1a68105b5ad8d673b4c5e8df4188e83919b0fe297a0391490a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9ec4988c55cdd1a68105b5ad8d673b4c5e8df4188e83919b0fe297a0391490a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9ec4988c55cdd1a68105b5ad8d673b4c5e8df4188e83919b0fe297a0391490a", kill_on_drop: false }`
[INFO] [stdout] a9ec4988c55cdd1a68105b5ad8d673b4c5e8df4188e83919b0fe297a0391490a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f60919fc142017cbf9a1e853fff71b6109af9340d27d4ab9724cf8b7ddcbed6b
[INFO] running `Command { std: "docker" "start" "-a" "f60919fc142017cbf9a1e853fff71b6109af9340d27d4ab9724cf8b7ddcbed6b", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (restaurant) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling const_fn v0.4.4
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling squote v0.1.2
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking const-sha1 v0.2.0
[INFO] [stderr]     Checking restaurant v0.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]     Checking ryu v1.0.5
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling winmd-macros v0.8.0 (https://github.com/microsoft/winrt-rs#bacab1e1)
[INFO] [stderr]    Compiling winrt-gen-macros v0.8.0 (https://github.com/microsoft/winrt-rs#bacab1e1)
[INFO] [stderr]     Checking winmd v0.8.0 (https://github.com/microsoft/winrt-rs#bacab1e1)
[INFO] [stderr]     Checking winrt-gen v0.8.0 (https://github.com/microsoft/winrt-rs#bacab1e1)
[INFO] [stderr]    Compiling winrt-macros v0.8.0 (https://github.com/microsoft/winrt-rs#bacab1e1)
[INFO] [stderr]    Compiling winrt v0.8.0 (https://github.com/microsoft/winrt-rs#bacab1e1)
[INFO] [stdout] error: proc macro panicked
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/winrt-rs-5b24704ba4b09dbb/bacab1e/build.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     winrt_macros::build!();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: message: Failed to parse `cargo metadata`: Error("EOF while parsing a value", line: 1, column: 0)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `winrt`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f60919fc142017cbf9a1e853fff71b6109af9340d27d4ab9724cf8b7ddcbed6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f60919fc142017cbf9a1e853fff71b6109af9340d27d4ab9724cf8b7ddcbed6b", kill_on_drop: false }`
[INFO] [stdout] f60919fc142017cbf9a1e853fff71b6109af9340d27d4ab9724cf8b7ddcbed6b