[INFO] fetching crate toolbelt 0.0.6...
[INFO] checking toolbelt-0.0.6 against master#bad50269f8eb0fda214f0478c3afb2c6fbb427fd for pr-149195-1
[INFO] extracting crate toolbelt 0.0.6 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate toolbelt 0.0.6
[INFO] finished tweaking crates.io crate toolbelt 0.0.6
[INFO] tweaked toml for crates.io crate toolbelt 0.0.6 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate toolbelt 0.0.6 on toolchain bad50269f8eb0fda214f0478c3afb2c6fbb427fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bad50269f8eb0fda214f0478c3afb2c6fbb427fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bad50269f8eb0fda214f0478c3afb2c6fbb427fd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 59 packages to latest compatible versions
[INFO] [stderr]       Adding noise v0.7.0 (available: v0.9.0)
[INFO] [stderr]       Adding walkdir v2.3.3 (available: v2.5.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bad50269f8eb0fda214f0478c3afb2c6fbb427fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded weezl v0.1.12
[INFO] [stderr]   Downloaded approx v0.4.0
[INFO] [stderr]   Downloaded walkdir v2.3.3
[INFO] [stderr]   Downloaded cgmath v0.18.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+bad50269f8eb0fda214f0478c3afb2c6fbb427fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 255dc2608c5c463c4d06b4ef1322caca852a1eb84dd3311f77a6f2038f8c9559
[INFO] running `Command { std: "docker" "start" "-a" "255dc2608c5c463c4d06b4ef1322caca852a1eb84dd3311f77a6f2038f8c9559", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "255dc2608c5c463c4d06b4ef1322caca852a1eb84dd3311f77a6f2038f8c9559", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "255dc2608c5c463c4d06b4ef1322caca852a1eb84dd3311f77a6f2038f8c9559", kill_on_drop: false }`
[INFO] [stdout] 255dc2608c5c463c4d06b4ef1322caca852a1eb84dd3311f77a6f2038f8c9559
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+bad50269f8eb0fda214f0478c3afb2c6fbb427fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94ae05ef494acea243616f7ede723a085ac201249de7217bdfb42f44d04c7391
[INFO] running `Command { std: "docker" "start" "-a" "94ae05ef494acea243616f7ede723a085ac201249de7217bdfb42f44d04c7391", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling libc v0.2.178
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling zerocopy v0.8.31
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking weezl v0.1.12
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking bytemuck v1.24.0
[INFO] [stderr]    Compiling cgmath v0.18.0
[INFO] [stderr]     Checking walkdir v2.3.3
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking gif v0.11.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking rayon v1.11.0
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking noise v0.7.0
[INFO] [stderr]     Checking toolbelt v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] error: `Perlin` is ambiguous
[INFO] [stdout]  --> src/noise.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use noise::{Perlin, Seedable, NoiseFn};
[INFO] [stdout]   |             ^^^^^^ ambiguous name
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #114095 <https://github.com/rust-lang/rust/issues/114095>
[INFO] [stdout]   = note: ambiguous because of multiple glob imports of a name in the same module
[INFO] [stdout] note: `Perlin` could refer to the struct defined here
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use self::perlin::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] note: `Perlin` could also refer to the struct defined here
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use self::perlin_surflet::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: `#[deny(ambiguous_glob_imports)]` (part of `#[deny(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Perlin` is ambiguous
[INFO] [stdout]  --> src/noise.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub generator: Perlin,
[INFO] [stdout]   |                    ^^^^^^ ambiguous name
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #114095 <https://github.com/rust-lang/rust/issues/114095>
[INFO] [stdout]   = note: ambiguous because of multiple glob imports of a name in the same module
[INFO] [stdout] note: `Perlin` could refer to the struct defined here
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use self::perlin::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] note: `Perlin` could also refer to the struct defined here
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use self::perlin_surflet::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Perlin` is ambiguous
[INFO] [stdout]   --> src/noise.rs:18:21
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let p = Perlin::new();
[INFO] [stdout]    |                     ^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #114095 <https://github.com/rust-lang/rust/issues/114095>
[INFO] [stdout]    = note: ambiguous because of multiple glob imports of a name in the same module
[INFO] [stdout] note: `Perlin` could refer to the struct defined here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:6:9
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub use self::perlin::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] note: `Perlin` could also refer to the struct defined here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:7:9
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub use self::perlin_surflet::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Perlin` is ambiguous
[INFO] [stdout]  --> src/noise.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use noise::{Perlin, Seedable, NoiseFn};
[INFO] [stdout]   |             ^^^^^^ ambiguous name
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #114095 <https://github.com/rust-lang/rust/issues/114095>
[INFO] [stdout]   = note: ambiguous because of multiple glob imports of a name in the same module
[INFO] [stdout] note: `Perlin` could refer to the struct defined here
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use self::perlin::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] note: `Perlin` could also refer to the struct defined here
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use self::perlin_surflet::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: `#[deny(ambiguous_glob_imports)]` (part of `#[deny(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Perlin` is ambiguous
[INFO] [stdout]  --> src/noise.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub generator: Perlin,
[INFO] [stdout]   |                    ^^^^^^ ambiguous name
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #114095 <https://github.com/rust-lang/rust/issues/114095>
[INFO] [stdout]   = note: ambiguous because of multiple glob imports of a name in the same module
[INFO] [stdout] note: `Perlin` could refer to the struct defined here
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use self::perlin::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] note: `Perlin` could also refer to the struct defined here
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use self::perlin_surflet::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Perlin` is ambiguous
[INFO] [stdout]   --> src/noise.rs:18:21
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let p = Perlin::new();
[INFO] [stdout]    |                     ^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #114095 <https://github.com/rust-lang/rust/issues/114095>
[INFO] [stdout]    = note: ambiguous because of multiple glob imports of a name in the same module
[INFO] [stdout] note: `Perlin` could refer to the struct defined here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:6:9
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub use self::perlin::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] note: `Perlin` could also refer to the struct defined here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/noise-0.7.0/src/noise_fns/generators.rs:7:9
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub use self::perlin_surflet::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/cell.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn get(&self) -> Ref<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] 32 |     pub fn get(&self) -> Ref<'_, T> {
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/cell.rs:36:20
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn try_get(&self) -> Result<Ref<T>, std::cell::BorrowError> {
[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] 36 |     pub fn try_get(&self) -> Result<Ref<'_, T>, std::cell::BorrowError> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/cell.rs:40:20
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn get_mut(&self) -> RefMut<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] 40 |     pub fn get_mut(&self) -> RefMut<'_, T> {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/cell.rs:44:24
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn try_get_mut(&self) -> Result<RefMut<T>, std::cell::BorrowMutError> {
[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] 44 |     pub fn try_get_mut(&self) -> Result<RefMut<'_, T>, std::cell::BorrowMutError> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `toolbelt` (lib) due to 6 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/cell.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn get(&self) -> Ref<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] 32 |     pub fn get(&self) -> Ref<'_, T> {
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/cell.rs:36:20
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn try_get(&self) -> Result<Ref<T>, std::cell::BorrowError> {
[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] 36 |     pub fn try_get(&self) -> Result<Ref<'_, T>, std::cell::BorrowError> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/cell.rs:40:20
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn get_mut(&self) -> RefMut<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] 40 |     pub fn get_mut(&self) -> RefMut<'_, T> {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/cell.rs:44:24
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn try_get_mut(&self) -> Result<RefMut<T>, std::cell::BorrowMutError> {
[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] 44 |     pub fn try_get_mut(&self) -> Result<RefMut<'_, T>, std::cell::BorrowMutError> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `toolbelt` (lib test) due to 6 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "94ae05ef494acea243616f7ede723a085ac201249de7217bdfb42f44d04c7391", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94ae05ef494acea243616f7ede723a085ac201249de7217bdfb42f44d04c7391", kill_on_drop: false }`
[INFO] [stdout] 94ae05ef494acea243616f7ede723a085ac201249de7217bdfb42f44d04c7391
