[INFO] cloning repository https://github.com/dharanad/learn-arrow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dharanad/learn-arrow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdharanad%2Flearn-arrow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdharanad%2Flearn-arrow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0da2db9e0ad4e13d3f5827d5161d590fe3e946ad
[INFO] checking dharanad/learn-arrow against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdharanad%2Flearn-arrow" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dharanad/learn-arrow
[INFO] finished tweaking git repo https://github.com/dharanad/learn-arrow
[INFO] tweaked toml for git repo https://github.com/dharanad/learn-arrow written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dharanad/learn-arrow on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dharanad/learn-arrow 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9a0cdbc8301d0bb609d6d2e0b514a6bc48f2fa853e087dd4a78111a685072e3
[INFO] running `Command { std: "docker" "start" "-a" "e9a0cdbc8301d0bb609d6d2e0b514a6bc48f2fa853e087dd4a78111a685072e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9a0cdbc8301d0bb609d6d2e0b514a6bc48f2fa853e087dd4a78111a685072e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9a0cdbc8301d0bb609d6d2e0b514a6bc48f2fa853e087dd4a78111a685072e3", kill_on_drop: false }`
[INFO] [stdout] e9a0cdbc8301d0bb609d6d2e0b514a6bc48f2fa853e087dd4a78111a685072e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02c5be4fdbb5f7b68d6f8e08d7d4c9e86d82908f4e518d7947354166f2fd927a
[INFO] running `Command { std: "docker" "start" "-a" "02c5be4fdbb5f7b68d6f8e08d7d4c9e86d82908f4e518d7947354166f2fd927a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.11
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.168
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[INFO] [stderr]     Checking arrow-schema v54.2.1
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[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking lexical-util v1.0.6
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling rustversion v1.0.18
[INFO] [stderr]    Compiling semver v1.0.23
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[INFO] [stderr]     Checking lexical-write-integer v1.0.5
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[INFO] [stderr]     Checking learn-arrow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Int64Array`
[INFO] [stdout]  --> src/operators/scan.rs:4:56
[INFO] [stdout]   |
[INFO] [stdout] 4 | use arrow::array::{ArrayRef, Float32Array, Int32Array, Int64Array, StringArray};
[INFO] [stdout]   |                                                        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/operators/filter.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let data = self.child.next();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Operator` is never used
[INFO] [stdout]  --> src/operators/mod.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub trait Operator {
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Scan` is never constructed
[INFO] [stdout]  --> src/operators/scan.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Scan {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/operators/scan.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Scan {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 16 |     pub fn new(data: Vec<RecordBatch>, schema: Schema) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_random_batches` is never used
[INFO] [stdout]   --> src/operators/scan.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn generate_random_batches(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Selection` is never constructed
[INFO] [stdout]  --> src/operators/project.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Selection {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/operators/project.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Selection {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(projection: Vec<Field>, child: Arc<dyn Operator>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Filter` is never constructed
[INFO] [stdout]  --> src/operators/filter.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Filter {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one` is never used
[INFO] [stdout]    --> src/main.rs:215:12
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub fn one() {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Int64Array`
[INFO] [stdout]  --> src/operators/scan.rs:4:56
[INFO] [stdout]   |
[INFO] [stdout] 4 | use arrow::array::{ArrayRef, Float32Array, Int32Array, Int64Array, StringArray};
[INFO] [stdout]   |                                                        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/operators/filter.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let data = self.child.next();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name` and `child` are never used
[INFO] [stdout]   --> src/operators/mod.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub trait Operator {
[INFO] [stdout]    |           -------- methods in this trait
[INFO] [stdout] 10 |     fn name(&self) -> String;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn child(&self) -> Arc<dyn Operator>;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Filter` is never constructed
[INFO] [stdout]  --> src/operators/filter.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Filter {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one` is never used
[INFO] [stdout]    --> src/main.rs:215:12
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub fn one() {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 43.31s
[INFO] running `Command { std: "docker" "inspect" "02c5be4fdbb5f7b68d6f8e08d7d4c9e86d82908f4e518d7947354166f2fd927a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02c5be4fdbb5f7b68d6f8e08d7d4c9e86d82908f4e518d7947354166f2fd927a", kill_on_drop: false }`
[INFO] [stdout] 02c5be4fdbb5f7b68d6f8e08d7d4c9e86d82908f4e518d7947354166f2fd927a