[INFO] fetching crate MA_rs 0.1.0...
[INFO] testing MA_rs-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate MA_rs 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate MA_rs 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate MA_rs 0.1.0
[INFO] tweaked toml for crates.io crate MA_rs 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate MA_rs 0.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate MA_rs 0.1.0 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d9898e1931b7e3bada29246a5a9cf251c4b1be330b538d4b0c5458ce5b5c0b4
[INFO] running `Command { std: "docker" "start" "-a" "2d9898e1931b7e3bada29246a5a9cf251c4b1be330b538d4b0c5458ce5b5c0b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d9898e1931b7e3bada29246a5a9cf251c4b1be330b538d4b0c5458ce5b5c0b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d9898e1931b7e3bada29246a5a9cf251c4b1be330b538d4b0c5458ce5b5c0b4", kill_on_drop: false }`
[INFO] [stdout] 2d9898e1931b7e3bada29246a5a9cf251c4b1be330b538d4b0c5458ce5b5c0b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4cdaff14ea155df7260613583e1943516f05480e6eb736738ce642045cd5f846
[INFO] running `Command { std: "docker" "start" "-a" "4cdaff14ea155df7260613583e1943516f05480e6eb736738ce642045cd5f846", kill_on_drop: false }`
[INFO] [stderr]    Compiling MA_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `strides` and `dtype` are never read
[INFO] [stdout]   --> src/tensor.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Tensor {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     strides: Option<Vec<usize>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     dtype: DType,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tensor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `MA_rs` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `ma_rs`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hinge`
[INFO] [stdout]  --> src/main.rs:2:50
[INFO] [stdout]   |
[INFO] [stdout] 2 | use MA_rs::loss::{mae, mse, rmse, cross_entropy, hinge};
[INFO] [stdout]   |                                                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "4cdaff14ea155df7260613583e1943516f05480e6eb736738ce642045cd5f846", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cdaff14ea155df7260613583e1943516f05480e6eb736738ce642045cd5f846", kill_on_drop: false }`
[INFO] [stdout] 4cdaff14ea155df7260613583e1943516f05480e6eb736738ce642045cd5f846
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5b37140f8acb4dd8bccf92da49799de81ee84275392ba6f9507e66685e91eb0
[INFO] running `Command { std: "docker" "start" "-a" "c5b37140f8acb4dd8bccf92da49799de81ee84275392ba6f9507e66685e91eb0", kill_on_drop: false }`
[INFO] [stdout] warning: fields `strides` and `dtype` are never read
[INFO] [stdout]   --> src/tensor.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Tensor {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     strides: Option<Vec<usize>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     dtype: DType,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tensor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `MA_rs` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `ma_rs`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling MA_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `regression`
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider adding a `main` function to `examples/regression.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `MA_rs` (example "regression") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `MA_rs` (example "mnist") due to 1 previous error
[INFO] [stdout] error[E0601]: `main` function not found in crate `mnist`
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider adding a `main` function to `examples/mnist.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `cifar10`
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider adding a `main` function to `examples/cifar10.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hinge`
[INFO] [stdout]  --> src/main.rs:2:50
[INFO] [stdout]   |
[INFO] [stdout] 2 | use MA_rs::loss::{mae, mse, rmse, cross_entropy, hinge};
[INFO] [stdout]   |                                                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `MA_rs` (example "cifar10") due to 1 previous error
[INFO] [stdout] warning: fields `strides` and `dtype` are never read
[INFO] [stdout]   --> src/tensor.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Tensor {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     strides: Option<Vec<usize>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     dtype: DType,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tensor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c5b37140f8acb4dd8bccf92da49799de81ee84275392ba6f9507e66685e91eb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5b37140f8acb4dd8bccf92da49799de81ee84275392ba6f9507e66685e91eb0", kill_on_drop: false }`
[INFO] [stdout] c5b37140f8acb4dd8bccf92da49799de81ee84275392ba6f9507e66685e91eb0