[INFO] fetching crate mvutils 1.7.2...
[INFO] testing mvutils-1.7.2 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate mvutils 1.7.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate mvutils 1.7.2
[INFO] finished tweaking crates.io crate mvutils 1.7.2
[INFO] tweaked toml for crates.io crate mvutils 1.7.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mvutils 1.7.2 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mvutils 1.7.2 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytebuffer v2.3.0
[INFO] [stderr]   Downloaded repr_offset v0.2.2
[INFO] [stderr]   Downloaded mvutils-proc-macro v1.1.7
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[INFO] [stderr]   Downloaded abi_stable_derive v0.11.3
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265
[INFO] running `Command { std: "docker" "start" "06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.189
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling memchr v2.8.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.22
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[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling zmij v1.0.23
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling tstr_proc_macros v0.2.2
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling core_extensions_proc_macros v1.5.4
[INFO] [stderr]    Compiling autocfg v1.5.1
[INFO] [stderr]    Compiling smallvec v1.15.2
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[INFO] [stderr]    Compiling aho-corasick v1.1.5
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling abi_stable_shared v0.11.0
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling typed-arena v2.0.2
[INFO] [stderr]    Compiling typewit v1.15.2
[INFO] [stderr]    Compiling syn v3.0.3
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling regex-syntax v0.8.11
[INFO] [stderr]    Compiling crossbeam-channel v0.5.16
[INFO] [stderr]    Compiling const_panic v0.2.17
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling repr_offset v0.2.2
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling generational-arena v0.2.9
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling foldhash v0.2.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling hashbrown v0.17.1
[INFO] [stderr]    Compiling bytebuffer v2.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling regex-automata v0.4.18
[INFO] [stderr]    Compiling mvutils-proc-macro v1.1.7
[INFO] [stderr]    Compiling as_derive_utils v0.11.0
[INFO] [stderr]    Compiling abi_stable_derive v0.11.3
[INFO] [stderr]    Compiling regex v1.13.1
[INFO] [stderr]    Compiling abi_stable v0.11.3
[INFO] [stderr]    Compiling mvutils v1.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::alloc::Layout`
[INFO] [stdout]  --> src/unsafe_utils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::alloc::Layout;
[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 imports: `AtomicUsize` and `Ordering`
[INFO] [stdout]  --> src/unsafe_utils.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::sync::atomic::{AtomicUsize, Ordering};
[INFO] [stdout]   |                         ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/unsafe_utils.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deref`
[INFO] [stdout]  --> src/unsafe_utils.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DerefMut`
[INFO] [stdout]  --> src/unsafe_utils.rs:6:23
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/hashers.rs:137:25
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn write(&mut self, bytes: &[u8]) {
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rwlock_guard` is never read
[INFO] [stdout]    --> src/state.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 204 | pub struct MappedStateReadGuard<'a, T, U> {
[INFO] [stdout]     |            -------------------- field in this struct
[INFO] [stdout] 205 |     mapped: U,
[INFO] [stdout] 206 |     rwlock_guard: RwLockReadGuard<'a, T>
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils.rs:739:23
[INFO] [stdout]     |
[INFO] [stdout] 739 |     fn read_unchecked(&self) -> RwLockReadGuard<T>;
[INFO] [stdout]     |                       ^^^^^     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 739 |     fn read_unchecked(&self) -> RwLockReadGuard<'_, T>;
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils.rs:740:24
[INFO] [stdout]     |
[INFO] [stdout] 740 |     fn write_unchecked(&self) -> RwLockWriteGuard<T>;
[INFO] [stdout]     |                        ^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 740 |     fn write_unchecked(&self) -> RwLockWriteGuard<'_, T>;
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils.rs:744:23
[INFO] [stdout]     |
[INFO] [stdout] 744 |     fn read_unchecked(&self) -> RwLockReadGuard<T> {
[INFO] [stdout]     |                       ^^^^^     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 744 |     fn read_unchecked(&self) -> RwLockReadGuard<'_, T> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils.rs:748:24
[INFO] [stdout]     |
[INFO] [stdout] 748 |     fn write_unchecked(&self) -> RwLockWriteGuard<T> {
[INFO] [stdout]     |                        ^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 748 |     fn write_unchecked(&self) -> RwLockWriteGuard<'_, T> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 1m 10s
[INFO] running `Command { std: "docker" "inspect" "06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::alloc::Layout`
[INFO] [stdout]  --> src/unsafe_utils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::alloc::Layout;
[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 imports: `AtomicUsize` and `Ordering`
[INFO] [stdout]  --> src/unsafe_utils.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::sync::atomic::{AtomicUsize, Ordering};
[INFO] [stdout]   |                         ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mvutils v1.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/unsafe_utils.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deref`
[INFO] [stdout]  --> src/unsafe_utils.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DerefMut`
[INFO] [stdout]  --> src/unsafe_utils.rs:6:23
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/hashers.rs:137:25
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn write(&mut self, bytes: &[u8]) {
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rwlock_guard` is never read
[INFO] [stdout]    --> src/state.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 204 | pub struct MappedStateReadGuard<'a, T, U> {
[INFO] [stdout]     |            -------------------- field in this struct
[INFO] [stdout] 205 |     mapped: U,
[INFO] [stdout] 206 |     rwlock_guard: RwLockReadGuard<'a, T>
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils.rs:739:23
[INFO] [stdout]     |
[INFO] [stdout] 739 |     fn read_unchecked(&self) -> RwLockReadGuard<T>;
[INFO] [stdout]     |                       ^^^^^     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 739 |     fn read_unchecked(&self) -> RwLockReadGuard<'_, T>;
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils.rs:740:24
[INFO] [stdout]     |
[INFO] [stdout] 740 |     fn write_unchecked(&self) -> RwLockWriteGuard<T>;
[INFO] [stdout]     |                        ^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 740 |     fn write_unchecked(&self) -> RwLockWriteGuard<'_, T>;
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils.rs:744:23
[INFO] [stdout]     |
[INFO] [stdout] 744 |     fn read_unchecked(&self) -> RwLockReadGuard<T> {
[INFO] [stdout]     |                       ^^^^^     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 744 |     fn read_unchecked(&self) -> RwLockReadGuard<'_, T> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils.rs:748:24
[INFO] [stdout]     |
[INFO] [stdout] 748 |     fn write_unchecked(&self) -> RwLockWriteGuard<T> {
[INFO] [stdout]     |                        ^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 748 |     fn write_unchecked(&self) -> RwLockWriteGuard<'_, T> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `CreateOnce` in this scope
[INFO] [stdout]    --> src/lib.rs:326:19
[INFO] [stdout]     |
[INFO] [stdout] 326 |         let once: CreateOnce<bool> = CreateOnce::new();
[INFO] [stdout]     |                   ^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout]  26 + use crate::once::CreateOnce;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `CreateOnce` in this scope
[INFO] [stdout]    --> src/lib.rs:326:38
[INFO] [stdout]     |
[INFO] [stdout] 326 |         let once: CreateOnce<bool> = CreateOnce::new();
[INFO] [stdout]     |                                      ^^^^^^^^^^ use of undeclared type `CreateOnce`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout]  26 + use crate::once::CreateOnce;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::alloc::Layout`
[INFO] [stdout]  --> src/unsafe_utils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::alloc::Layout;
[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 imports: `DerefMut` and `Deref`
[INFO] [stdout]  --> src/unsafe_utils.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AtomicUsize` and `Ordering`
[INFO] [stdout]  --> src/unsafe_utils.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::sync::atomic::{AtomicUsize, Ordering};
[INFO] [stdout]   |                         ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/unsafe_utils.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::Regex`
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use regex::Regex;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::once::Lazy`
[INFO] [stdout]    --> src/lib.rs:212:9
[INFO] [stdout]     |
[INFO] [stdout] 212 |     use crate::once::Lazy;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/hashers.rs:137:25
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn write(&mut self, bytes: &[u8]) {
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mvutils` (lib test) due to 2 previous errors; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265", kill_on_drop: false }`
[INFO] [stdout] 06919459b0d117cb6acb8d19323bab2f2eefc699e7a551fed60c987c00888265
