[INFO] fetching crate rayon-hash 0.5.0...
[INFO] checking rayon-hash-0.5.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate rayon-hash 0.5.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate rayon-hash 0.5.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rayon-hash 0.5.0
[INFO] finished tweaking crates.io crate rayon-hash 0.5.0
[INFO] tweaked toml for crates.io crate rayon-hash 0.5.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages
[INFO] [stderr]       Adding autocfg v0.1.8 (latest: v1.2.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cloudabi v0.0.3 (latest: v0.1.0)
[INFO] [stderr]       Adding hashbrown v0.3.1 (latest: v0.14.3)
[INFO] [stderr]       Adding rand v0.6.5 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.1.1 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.1.0 (latest: v0.3.2)
[INFO] [stderr]       Adding rand_isaac v0.1.1 (latest: v0.3.0)
[INFO] [stderr]       Adding rand_jitter v0.1.4 (latest: v0.4.0)
[INFO] [stderr]       Adding rand_os v0.1.3 (latest: v0.2.2)
[INFO] [stderr]       Adding rand_pcg v0.1.2 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_xorshift v0.1.1 (latest: v0.3.0)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 828448aec90982dc7e80c7f7e16d3a91e8ad3275f7859fda2d2c1af374fdf0cc
[INFO] running `Command { std: "docker" "start" "-a" "828448aec90982dc7e80c7f7e16d3a91e8ad3275f7859fda2d2c1af374fdf0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "828448aec90982dc7e80c7f7e16d3a91e8ad3275f7859fda2d2c1af374fdf0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "828448aec90982dc7e80c7f7e16d3a91e8ad3275f7859fda2d2c1af374fdf0cc", kill_on_drop: false }`
[INFO] [stdout] 828448aec90982dc7e80c7f7e16d3a91e8ad3275f7859fda2d2c1af374fdf0cc
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b77cfe25968e75cc570fdf0ba3bfa7ef92f6284f442f16150dfb90a466d53654
[INFO] running `Command { std: "docker" "start" "-a" "b77cfe25968e75cc570fdf0ba3bfa7ef92f6284f442f16150dfb90a466d53654", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking hashbrown v0.3.1
[INFO] [stderr]     Checking rayon-hash v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/std_hash/map.rs:2540:34
[INFO] [stdout]      |
[INFO] [stdout] 2540 |     fn next(&mut self) -> Option<(&'a K)> {
[INFO] [stdout]      |                                  ^     ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 2540 -     fn next(&mut self) -> Option<(&'a K)> {
[INFO] [stdout] 2540 +     fn next(&mut self) -> Option<&'a K> {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/std_hash/map.rs:2563:34
[INFO] [stdout]      |
[INFO] [stdout] 2563 |     fn next(&mut self) -> Option<(&'a V)> {
[INFO] [stdout]      |                                  ^     ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 2563 -     fn next(&mut self) -> Option<(&'a V)> {
[INFO] [stdout] 2563 +     fn next(&mut self) -> Option<&'a V> {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/std_hash/map.rs:2586:34
[INFO] [stdout]      |
[INFO] [stdout] 2586 |     fn next(&mut self) -> Option<(&'a mut V)> {
[INFO] [stdout]      |                                  ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 2586 -     fn next(&mut self) -> Option<(&'a mut V)> {
[INFO] [stdout] 2586 +     fn next(&mut self) -> Option<&'a mut V> {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]   --> src/alloc.rs:18:24
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::alloc::{self, LayoutErr};
[INFO] [stdout]    |                        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]   --> src/alloc.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn layout_err() -> LayoutErr {
[INFO] [stdout]    |                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/alloc.rs:230:11
[INFO] [stdout]     |
[INFO] [stdout] 230 | impl From<LayoutErr> for CollectionAllocErr {
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]   --> src/alloc.rs:59:78
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub(crate) fn from_size_align(size: usize, align: usize) -> Result<Self, LayoutErr> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/alloc.rs:147:68
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub(crate) fn repeat(&self, n: usize) -> Result<(Self, usize), LayoutErr> {
[INFO] [stdout]     |                                                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/alloc.rs:176:70
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub(crate) fn extend(&self, next: Self) -> Result<(Self, usize), LayoutErr> {
[INFO] [stdout]     |                                                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/alloc.rs:194:54
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub(crate) fn array<T>(n: usize) -> Result<Self, LayoutErr> {
[INFO] [stdout]     |                                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/alloc.rs:232:16
[INFO] [stdout]     |
[INFO] [stdout] 232 |     fn from(_: LayoutErr) -> Self {
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]  --> src/std_hash/table.rs:4:42
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::alloc::{alloc, dealloc, Layout, LayoutErr, handle_alloc_error};
[INFO] [stdout]   |                                          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/std_hash/table.rs:663:71
[INFO] [stdout]     |
[INFO] [stdout] 663 | fn calculate_layout<K, V>(capacity: usize) -> Result<(Layout, usize), LayoutErr> {
[INFO] [stdout]     |                                                                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/std_hash/map.rs:2540:34
[INFO] [stdout]      |
[INFO] [stdout] 2540 |     fn next(&mut self) -> Option<(&'a K)> {
[INFO] [stdout]      |                                  ^     ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 2540 -     fn next(&mut self) -> Option<(&'a K)> {
[INFO] [stdout] 2540 +     fn next(&mut self) -> Option<&'a K> {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/std_hash/map.rs:2563:34
[INFO] [stdout]      |
[INFO] [stdout] 2563 |     fn next(&mut self) -> Option<(&'a V)> {
[INFO] [stdout]      |                                  ^     ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 2563 -     fn next(&mut self) -> Option<(&'a V)> {
[INFO] [stdout] 2563 +     fn next(&mut self) -> Option<&'a V> {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/std_hash/map.rs:2586:34
[INFO] [stdout]      |
[INFO] [stdout] 2586 |     fn next(&mut self) -> Option<(&'a mut V)> {
[INFO] [stdout]      |                                  ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 2586 -     fn next(&mut self) -> Option<(&'a mut V)> {
[INFO] [stdout] 2586 +     fn next(&mut self) -> Option<&'a mut V> {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]   --> src/alloc.rs:18:24
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::alloc::{self, LayoutErr};
[INFO] [stdout]    |                        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]   --> src/alloc.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn layout_err() -> LayoutErr {
[INFO] [stdout]    |                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/alloc.rs:230:11
[INFO] [stdout]     |
[INFO] [stdout] 230 | impl From<LayoutErr> for CollectionAllocErr {
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]   --> src/alloc.rs:59:78
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub(crate) fn from_size_align(size: usize, align: usize) -> Result<Self, LayoutErr> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/alloc.rs:147:68
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub(crate) fn repeat(&self, n: usize) -> Result<(Self, usize), LayoutErr> {
[INFO] [stdout]     |                                                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/alloc.rs:176:70
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub(crate) fn extend(&self, next: Self) -> Result<(Self, usize), LayoutErr> {
[INFO] [stdout]     |                                                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/alloc.rs:194:54
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub(crate) fn array<T>(n: usize) -> Result<Self, LayoutErr> {
[INFO] [stdout]     |                                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/alloc.rs:232:16
[INFO] [stdout]     |
[INFO] [stdout] 232 |     fn from(_: LayoutErr) -> Self {
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]  --> src/std_hash/table.rs:4:42
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::alloc::{alloc, dealloc, Layout, LayoutErr, handle_alloc_error};
[INFO] [stdout]   |                                          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/std_hash/table.rs:663:71
[INFO] [stdout]     |
[INFO] [stdout] 663 | fn calculate_layout<K, V>(capacity: usize) -> Result<(Layout, usize), LayoutErr> {
[INFO] [stdout]     |                                                                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]     --> src/std_hash/set.rs:1760:34
[INFO] [stdout]      |
[INFO] [stdout] 1760 |         struct Foo(&'static str, i32);
[INFO] [stdout]      |                ---               ^^^
[INFO] [stdout]      |                |
[INFO] [stdout]      |                field in this struct
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Foo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1760 |         struct Foo(&'static str, ());
[INFO] [stdout]      |                                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]     --> src/std_hash/map.rs:4031:21
[INFO] [stdout]      |
[INFO] [stdout] 4031 |         a.insert(key.clone(), value.clone());
[INFO] [stdout]      |                     ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]      |
[INFO] [stdout]      = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]      = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]     --> src/std_hash/map.rs:4031:36
[INFO] [stdout]      |
[INFO] [stdout] 4031 |         a.insert(key.clone(), value.clone());
[INFO] [stdout]      |                                    ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]      |
[INFO] [stdout]      = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]     --> src/std_hash/map.rs:4035:26
[INFO] [stdout]      |
[INFO] [stdout] 4035 |         match a.entry(key.clone()) {
[INFO] [stdout]      |                          ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]      |
[INFO] [stdout]      = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]     --> src/std_hash/map.rs:4050:26
[INFO] [stdout]      |
[INFO] [stdout] 4050 |         match a.entry(key.clone()) {
[INFO] [stdout]      |                          ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]      |
[INFO] [stdout]      = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]     --> src/std_hash/map.rs:4054:31
[INFO] [stdout]      |
[INFO] [stdout] 4054 |                 e.insert(value.clone());
[INFO] [stdout]      |                               ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]      |
[INFO] [stdout]      = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.28s
[INFO] running `Command { std: "docker" "inspect" "b77cfe25968e75cc570fdf0ba3bfa7ef92f6284f442f16150dfb90a466d53654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b77cfe25968e75cc570fdf0ba3bfa7ef92f6284f442f16150dfb90a466d53654", kill_on_drop: false }`
[INFO] [stdout] b77cfe25968e75cc570fdf0ba3bfa7ef92f6284f442f16150dfb90a466d53654