[INFO] fetching crate texcore 0.7.2...
[INFO] checking texcore-0.7.2 against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] extracting crate texcore 0.7.2 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate texcore 0.7.2 on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate texcore 0.7.2
[INFO] finished tweaking crates.io crate texcore 0.7.2
[INFO] tweaked toml for crates.io crate texcore 0.7.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate texcore 0.7.2 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" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d18cc06675ff257eff5725595151b7dbf39f20d3defc41bc518936e59a3d47d8
[INFO] running `Command { std: "docker" "start" "-a" "d18cc06675ff257eff5725595151b7dbf39f20d3defc41bc518936e59a3d47d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d18cc06675ff257eff5725595151b7dbf39f20d3defc41bc518936e59a3d47d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d18cc06675ff257eff5725595151b7dbf39f20d3defc41bc518936e59a3d47d8", kill_on_drop: false }`
[INFO] [stdout] d18cc06675ff257eff5725595151b7dbf39f20d3defc41bc518936e59a3d47d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 554a6e3d939b909a37f956367524e1e8926f628417964995eb95f92d77ef406e
[INFO] running `Command { std: "docker" "start" "-a" "554a6e3d939b909a37f956367524e1e8926f628417964995eb95f92d77ef406e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]    Compiling texcore_derive v0.1.0
[INFO] [stderr]     Checking texcore_traits v0.1.0
[INFO] [stderr]     Checking texcore v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `tokio`
[INFO] [stdout]  --> examples/async_example.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::io::Result;
[INFO] [stdout]   |     ^^^^^ use of undeclared crate or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `tokio`
[INFO] [stdout]  --> examples/async_example.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[tokio::main]
[INFO] [stdout]   |   ^^^^^ use of undeclared crate or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `async_write` found for struct `ElementList` in the current scope
[INFO] [stdout]   --> examples/async_example.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |     list.async_write(PathBuf::from("main.tex")).await?;
[INFO] [stdout]    |          ^^^^^^^^^^^ method not found in `ElementList<Any>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `async_write_split` found for struct `ElementList` in the current scope
[INFO] [stdout]   --> examples/async_example.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 |     list.async_write_split(
[INFO] [stdout]    |     -----^^^^^^^^^^^^^^^^^ help: there is a method with a similar name: `write_split`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0752]: `main` function is not allowed to be `async`
[INFO] [stdout]  --> examples/async_example.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | async fn main() -> Result<()> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0599, E0752.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `texcore` (example "async_example") due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "554a6e3d939b909a37f956367524e1e8926f628417964995eb95f92d77ef406e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "554a6e3d939b909a37f956367524e1e8926f628417964995eb95f92d77ef406e", kill_on_drop: false }`
[INFO] [stdout] 554a6e3d939b909a37f956367524e1e8926f628417964995eb95f92d77ef406e
