[INFO] fetching crate tauformer 0.4.0...
[INFO] checking tauformer-0.4.0 against try#1baf923b9c3a455162afe43e18647f494c1a4b73 for pr-151510
[INFO] extracting crate tauformer 0.4.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate tauformer 0.4.0
[INFO] finished tweaking crates.io crate tauformer 0.4.0
[INFO] tweaked toml for crates.io crate tauformer 0.4.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tauformer 0.4.0 on toolchain 1baf923b9c3a455162afe43e18647f494c1a4b73
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tauformer 0.4.0 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" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 827b562fb0842538c04ce69e071a911295e8023827d4b06419ba9dd9f1ee57b4
[INFO] running `Command { std: "docker" "start" "-a" "827b562fb0842538c04ce69e071a911295e8023827d4b06419ba9dd9f1ee57b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "827b562fb0842538c04ce69e071a911295e8023827d4b06419ba9dd9f1ee57b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "827b562fb0842538c04ce69e071a911295e8023827d4b06419ba9dd9f1ee57b4", kill_on_drop: false }`
[INFO] [stdout] 827b562fb0842538c04ce69e071a911295e8023827d4b06419ba9dd9f1ee57b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9aaaa12636ff6a155e36a2aa931c0e1d03e24c7ee6ceab37c6e3000ffa612b9b
[INFO] running `Command { std: "docker" "start" "-a" "9aaaa12636ff6a155e36a2aa931c0e1d03e24c7ee6ceab37c6e3000ffa612b9b", kill_on_drop: false }`
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[INFO] [stderr]     Checking parquet v57.1.0
[INFO] [stderr]     Checking burn-train v0.19.1
[INFO] [stderr]     Checking burn v0.19.1
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[INFO] [stderr]     Checking tauformer v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `burn::prelude::*`
[INFO] [stdout]   --> src/pretraining/parquet.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use burn::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `burn::prelude::*`
[INFO] [stdout]   --> src/pretraining/parquet.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use burn::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Int`
[INFO] [stdout]   --> src/tests/test_causal_taumode.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 | use burn::tensor::{Int, Tensor};
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]   --> src/tests/test_causal_taumode.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | use log::{debug, info};
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/pretraining/mod.rs:119:38
[INFO] [stdout]     |
[INFO] [stdout] 119 | pub fn ensure_domain_manifold_exists(path: impl AsRef<Path>) -> anyhow::Result<()> {
[INFO] [stdout]     |                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/pretraining/mod.rs:119:38
[INFO] [stdout]     |
[INFO] [stdout] 119 | pub fn ensure_domain_manifold_exists(path: impl AsRef<Path>) -> anyhow::Result<()> {
[INFO] [stdout]     |                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ManifoldMeta` is never constructed
[INFO] [stdout]  --> src/pretraining/parse.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ManifoldMeta {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BuilderConfig` is never constructed
[INFO] [stdout]   --> src/pretraining/parse.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct BuilderConfig {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Synthesis` is never constructed
[INFO] [stdout]   --> src/pretraining/parse.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Synthesis {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WrappedUsize` is never constructed
[INFO] [stdout]   --> src/pretraining/parse.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct WrappedUsize {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `nfeatures` and `tau_mode_str` are never used
[INFO] [stdout]   --> src/pretraining/parse.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl ManifoldMeta {
[INFO] [stdout]    | ----------------- methods in this implementation
[INFO] [stdout] 28 |     pub fn nfeatures(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn tau_mode_str(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tests/test_synthetic_tasks.rs:181:9
[INFO] [stdout]     |
[INFO] [stdout] 181 |     let mut sample_key = |st: &mut u32| -> i64 { (1 + ((lcg_u32(st) as usize) % 15)) as i64 };
[INFO] [stdout]     |         ----^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tests/test_synthetic_tasks.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let mut sample_val = |st: &mut u32| -> i64 { (16 + ((lcg_u32(st) as usize) % 32)) as i64 };
[INFO] [stdout]     |         ----^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ManifoldMeta` is never constructed
[INFO] [stdout]  --> src/pretraining/parse.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ManifoldMeta {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BuilderConfig` is never constructed
[INFO] [stdout]   --> src/pretraining/parse.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct BuilderConfig {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Synthesis` is never constructed
[INFO] [stdout]   --> src/pretraining/parse.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Synthesis {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WrappedUsize` is never constructed
[INFO] [stdout]   --> src/pretraining/parse.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct WrappedUsize {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `nfeatures` and `tau_mode_str` are never used
[INFO] [stdout]   --> src/pretraining/parse.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl ManifoldMeta {
[INFO] [stdout]    | ----------------- methods in this implementation
[INFO] [stdout] 28 |     pub fn nfeatures(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn tau_mode_str(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 2m 10s
[INFO] running `Command { std: "docker" "inspect" "9aaaa12636ff6a155e36a2aa931c0e1d03e24c7ee6ceab37c6e3000ffa612b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aaaa12636ff6a155e36a2aa931c0e1d03e24c7ee6ceab37c6e3000ffa612b9b", kill_on_drop: false }`
[INFO] [stdout] 9aaaa12636ff6a155e36a2aa931c0e1d03e24c7ee6ceab37c6e3000ffa612b9b