[INFO] cloning repository https://github.com/zolkko/rust-katas
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zolkko/rust-katas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzolkko%2Frust-katas", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzolkko%2Frust-katas'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 68676fc622353634503c404bb690ddbea4039fdb
[INFO] checking zolkko/rust-katas against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzolkko%2Frust-katas" "/workspace/builds/worker-67/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-67/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zolkko/rust-katas on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zolkko/rust-katas
[INFO] finished tweaking git repo https://github.com/zolkko/rust-katas
[INFO] tweaked toml for git repo https://github.com/zolkko/rust-katas written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] crate git repo https://github.com/zolkko/rust-katas already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "cdb7992b2a331fd3ebf0ff62f49375a23040baf2bc4383225cedf2f8f4f609e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdb7992b2a331fd3ebf0ff62f49375a23040baf2bc4383225cedf2f8f4f609e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdb7992b2a331fd3ebf0ff62f49375a23040baf2bc4383225cedf2f8f4f609e8", kill_on_drop: false }`
[INFO] [stdout] cdb7992b2a331fd3ebf0ff62f49375a23040baf2bc4383225cedf2f8f4f609e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 551e0e80facc12182d996920105de68b75c3683aac50c0aa5c72c2687fe2a3bd
[INFO] running `Command { std: "docker" "start" "-a" "551e0e80facc12182d996920105de68b75c3683aac50c0aa5c72c2687fe2a3bd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking futures-sink v0.3.16
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.16
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling rust-katas v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking matrixmultiply v0.3.1
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking ndarray v0.15.3
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking futures-executor v0.3.16
[INFO] [stderr]     Checking futures v0.3.16
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/read_ints.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stdout]  --> src/read_ints.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let input = line.trim_right();
[INFO] [stdout]   |                      ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/read_ints.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::ShapeBuilder`
[INFO] [stdout]   --> src/read_ints.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     use ndarray::ShapeBuilder;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryFutureExt`
[INFO] [stdout]  --> src/poll_fn_stream.rs:5:40
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures::future::{self, FutureExt, TryFutureExt};
[INFO] [stdout]   |                                        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> src/poll_fn_stream.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]   --> src/poll_fn_stream.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::task::{Context, Poll};
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::fs::File`
[INFO] [stdout]   --> src/poll_fn_stream.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use tokio::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/async_book.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let mut state = Arc::new(Mutex::new(SharedState { completed: false, waker: None }));
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/async_book.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let mut thread_state = Arc::clone(&state);
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryFutureExt`
[INFO] [stdout]  --> src/poll_fn_stream.rs:5:40
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures::future::{self, FutureExt, TryFutureExt};
[INFO] [stdout]   |                                        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryFutureExt`
[INFO] [stdout]  --> src/watch_file.rs:5:48
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures::future::{self, Either, FutureExt, TryFutureExt};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> src/poll_fn_stream.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]   --> src/watch_file.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::task::{Context, Poll};
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]   --> src/poll_fn_stream.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::task::{Context, Poll};
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::fs::File`
[INFO] [stdout]   --> src/poll_fn_stream.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use tokio::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryFutureExt`
[INFO] [stdout]  --> src/watch_file.rs:5:48
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures::future::{self, Either, FutureExt, TryFutureExt};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]   --> src/watch_file.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::task::{Context, Poll};
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stdout]  --> src/read_ints.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let input = line.trim_right();
[INFO] [stdout]   |                      ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/read_ints.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         for mut sub_levels in a.axis_iter_mut(Axis(0)) {
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/async_book.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let mut state = Arc::new(Mutex::new(SharedState { completed: false, waker: None }));
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/async_book.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let mut thread_state = Arc::clone(&state);
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryStreamExt`
[INFO] [stdout]  --> src/watch_file.rs:6:48
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures::stream::{self, Stream, StreamExt, TryStreamExt};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryStreamExt`
[INFO] [stdout]  --> src/watch_file.rs:6:48
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures::stream::{self, Stream, StreamExt, TryStreamExt};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryStreamExt`
[INFO] [stdout]  --> src/poll_fn_stream.rs:6:48
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures::stream::{self, Stream, StreamExt, TryStreamExt};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryStreamExt`
[INFO] [stdout]  --> src/poll_fn_stream.rs:6:48
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures::stream::{self, Stream, StreamExt, TryStreamExt};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.57s
[INFO] running `Command { std: "docker" "inspect" "551e0e80facc12182d996920105de68b75c3683aac50c0aa5c72c2687fe2a3bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "551e0e80facc12182d996920105de68b75c3683aac50c0aa5c72c2687fe2a3bd", kill_on_drop: false }`
[INFO] [stdout] 551e0e80facc12182d996920105de68b75c3683aac50c0aa5c72c2687fe2a3bd