[INFO] cloning repository https://github.com/zachdrone/rust-data-systems-lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zachdrone/rust-data-systems-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzachdrone%2Frust-data-systems-lab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzachdrone%2Frust-data-systems-lab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 535e66751c68b8c3a645b39fc1be4c8046f4aae6
[INFO] checking zachdrone/rust-data-systems-lab against try#94382f34384023f3d2062a34ccf0bb6b4d44a75a for mutual-coercion
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzachdrone%2Frust-data-systems-lab" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zachdrone/rust-data-systems-lab
[INFO] finished tweaking git repo https://github.com/zachdrone/rust-data-systems-lab
[INFO] tweaked toml for git repo https://github.com/zachdrone/rust-data-systems-lab written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zachdrone/rust-data-systems-lab on toolchain 94382f34384023f3d2062a34ccf0bb6b4d44a75a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zachdrone/rust-data-systems-lab 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" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21e0bb6fb96ded8075347322aae702795c230e47e9d0fb39cd6fc265370ef954
[INFO] running `Command { std: "docker" "start" "-a" "21e0bb6fb96ded8075347322aae702795c230e47e9d0fb39cd6fc265370ef954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21e0bb6fb96ded8075347322aae702795c230e47e9d0fb39cd6fc265370ef954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21e0bb6fb96ded8075347322aae702795c230e47e9d0fb39cd6fc265370ef954", kill_on_drop: false }`
[INFO] [stdout] 21e0bb6fb96ded8075347322aae702795c230e47e9d0fb39cd6fc265370ef954
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79b9e9b5358e8ee6b42a51fe84d168c7a96dbc88cf140de6161b248f079564f2
[INFO] running `Command { std: "docker" "start" "-a" "79b9e9b5358e8ee6b42a51fe84d168c7a96dbc88cf140de6161b248f079564f2", kill_on_drop: false }`
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[INFO] [stderr]    Compiling proc-macro-crate v3.4.0
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[INFO] [stderr]     Checking futures-timer v3.0.3
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[INFO] [stderr]     Checking arrow-cast v57.1.0
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[INFO] [stderr]     Checking arrow-csv v57.1.0
[INFO] [stderr]     Checking parquet v57.1.0
[INFO] [stderr]     Checking arrow v57.1.0
[INFO] [stderr]     Checking rstest v0.26.1
[INFO] [stderr]     Checking datafusion-common v51.0.0
[INFO] [stderr]     Checking etl-engine v0.1.0 (/opt/rustwide/workdir/crates/etl-engine)
[INFO] [stdout] warning: function `read_csv` is never used
[INFO] [stdout]   --> crates/etl-engine/src/bin/csv_to_arrow.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | async fn read_csv(filepath: String, schema: Arc<Schema>, tx: mpsc::Sender<RecordBatch>) {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_json` is never used
[INFO] [stdout]   --> crates/etl-engine/src/bin/csv_to_arrow.rs:74:10
[INFO] [stdout]    |
[INFO] [stdout] 74 | async fn write_json(mut rx: mpsc::Receiver<RecordBatch>) {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_csv` is never used
[INFO] [stdout]   --> crates/etl-engine/src/bin/csv_to_arrow.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | async fn read_csv(filepath: String, schema: Arc<Schema>, tx: mpsc::Sender<RecordBatch>) {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_json` is never used
[INFO] [stdout]   --> crates/etl-engine/src/bin/csv_to_arrow.rs:74:10
[INFO] [stdout]    |
[INFO] [stdout] 74 | async fn write_json(mut rx: mpsc::Receiver<RecordBatch>) {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking datafusion-expr-common v51.0.0
[INFO] [stderr]     Checking datafusion-physical-expr-common v51.0.0
[INFO] [stderr]     Checking datafusion-functions-window-common v51.0.0
[INFO] [stderr]     Checking datafusion-functions-aggregate-common v51.0.0
[INFO] [stderr]     Checking datafusion-expr v51.0.0
[INFO] [stderr]     Checking datafusion-physical-expr v51.0.0
[INFO] [stderr]     Checking datafusion-execution v51.0.0
[INFO] [stderr]     Checking datafusion-sql v51.0.0
[INFO] [stderr]     Checking datafusion-functions v51.0.0
[INFO] [stderr]     Checking datafusion-physical-plan v51.0.0
[INFO] [stderr]     Checking datafusion-functions-aggregate v51.0.0
[INFO] [stderr]     Checking datafusion-functions-window v51.0.0
[INFO] [stderr]     Checking datafusion-optimizer v51.0.0
[INFO] [stderr]     Checking datafusion-physical-expr-adapter v51.0.0
[INFO] [stderr]     Checking datafusion-functions-nested v51.0.0
[INFO] [stderr]     Checking datafusion-session v51.0.0
[INFO] [stderr]     Checking datafusion-datasource v51.0.0
[INFO] [stderr]     Checking datafusion-pruning v51.0.0
[INFO] [stderr]     Checking datafusion-catalog v51.0.0
[INFO] [stderr]     Checking datafusion-datasource-csv v51.0.0
[INFO] [stderr]     Checking datafusion-datasource-arrow v51.0.0
[INFO] [stderr]     Checking datafusion-datasource-json v51.0.0
[INFO] [stderr]     Checking datafusion-physical-optimizer v51.0.0
[INFO] [stderr]     Checking datafusion-datasource-parquet v51.0.0
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/datafusion-datasource-parquet-51.0.0/src/opener.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 | /             self.parquet_file_reader_factory.create_reader(
[INFO] [stdout] 131 | |                 self.partition_index,
[INFO] [stdout] 132 | |                 partitioned_file.clone(),
[INFO] [stdout] 133 | |                 metadata_size_hint,
[INFO] [stdout] 134 | |                 &self.metrics,
[INFO] [stdout] 135 | |             )?;
[INFO] [stdout]     | |______________^ expected trait `AsyncFileReader + std::marker::Send`, found trait `AsyncFileReader`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `?` operator cannot convert from `Box<dyn AsyncFileReader + std::marker::Send>` to `Box<dyn AsyncFileReader>`
[INFO] [stdout]     = note: expected struct `Box<dyn AsyncFileReader>`
[INFO] [stdout]                found struct `Box<dyn AsyncFileReader + std::marker::Send>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `Arc<_, _>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/datafusion-datasource-parquet-51.0.0/src/opener.rs:353:17
[INFO] [stdout]     |
[INFO] [stdout] 353 |             let file_metadata = Arc::clone(builder.metadata());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^
[INFO] [stdout] 354 |             let predicate = pruning_predicate.as_ref().map(|p| p.as_ref());
[INFO] [stdout] 355 |             let rg_metadata = file_metadata.row_groups();
[INFO] [stdout]     |                               ------------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving `file_metadata` an explicit type, where the placeholders `_` are specified
[INFO] [stdout]     |
[INFO] [stdout] 353 |             let file_metadata: Arc<T, A> = Arc::clone(builder.metadata());
[INFO] [stdout]     |                              +++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/datafusion-datasource-parquet-51.0.0/src/opener.rs:458:74
[INFO] [stdout]     |
[INFO] [stdout] 458 |             let stream = stream.map_err(DataFusionError::from).map(move |b| {
[INFO] [stdout]     |                                                                          ^
[INFO] [stdout] 459 |                 b.and_then(|b| {
[INFO] [stdout]     |                 - type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 458 |             let stream = stream.map_err(DataFusionError::from).map(move |b: /* Type */| {
[INFO] [stdout]     |                                                                           ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `datafusion-datasource-parquet` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "79b9e9b5358e8ee6b42a51fe84d168c7a96dbc88cf140de6161b248f079564f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79b9e9b5358e8ee6b42a51fe84d168c7a96dbc88cf140de6161b248f079564f2", kill_on_drop: false }`
[INFO] [stdout] 79b9e9b5358e8ee6b42a51fe84d168c7a96dbc88cf140de6161b248f079564f2
