[INFO] cloning repository https://github.com/thumperca/mutex-experiments [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thumperca/mutex-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthumperca%2Fmutex-experiments", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthumperca%2Fmutex-experiments'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 052da1010a141b49b486ea496ed21a0b2ce28104 [INFO] testing thumperca/mutex-experiments against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthumperca%2Fmutex-experiments" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/thumperca/mutex-experiments [INFO] finished tweaking git repo https://github.com/thumperca/mutex-experiments [INFO] tweaked toml for git repo https://github.com/thumperca/mutex-experiments written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/thumperca/mutex-experiments on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/thumperca/mutex-experiments 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded atomic-wait v1.1.0 [INFO] [stderr] Downloaded libc v0.2.151 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2902a8044d2aa9ea434b7acc80fc36d1fcae814d620829442d8f0a150acbe46d [INFO] running `Command { std: "docker" "start" "-a" "2902a8044d2aa9ea434b7acc80fc36d1fcae814d620829442d8f0a150acbe46d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2902a8044d2aa9ea434b7acc80fc36d1fcae814d620829442d8f0a150acbe46d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2902a8044d2aa9ea434b7acc80fc36d1fcae814d620829442d8f0a150acbe46d", kill_on_drop: false }` [INFO] [stdout] 2902a8044d2aa9ea434b7acc80fc36d1fcae814d620829442d8f0a150acbe46d [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c2d8e54beefa02cd8c0282429587012843a6da0edfdf83dadc5460dffb331662 [INFO] running `Command { std: "docker" "start" "-a" "c2d8e54beefa02cd8c0282429587012843a6da0edfdf83dadc5460dffb331662", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.151 [INFO] [stderr] Compiling atomic-wait v1.1.0 [INFO] [stderr] Compiling mutex v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/fair_mutex.rs:115:9 [INFO] [stdout] | [INFO] [stdout] 115 | use super::*; [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 import: `std::sync::Arc` [INFO] [stdout] --> src/fair_mutex.rs:116:9 [INFO] [stdout] | [INFO] [stdout] 116 | use std::sync::Arc; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/kernel_wait_mutex.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::sync::Arc` [INFO] [stdout] --> src/kernel_wait_mutex.rs:77:9 [INFO] [stdout] | [INFO] [stdout] 77 | use std::sync::Arc; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/raw_mutex.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::sync::Arc` [INFO] [stdout] --> src/raw_mutex.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | use std::sync::Arc; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/safe_spin_mutex.rs:88:9 [INFO] [stdout] | [INFO] [stdout] 88 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | for i in 0..100_000 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MutexGuard` is never constructed [INFO] [stdout] --> src/fair_mutex.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct MutexGuard<'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: associated function `new` is never used [INFO] [stdout] --> src/fair_mutex.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 16 | impl<'a, T> MutexGuard<'a, T> { [INFO] [stdout] | ----------------------------- associated function in this implementation [INFO] [stdout] 17 | pub fn new(mux: &'a Mutex) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Mutex` is never constructed [INFO] [stdout] --> src/fair_mutex.rs:70:12 [INFO] [stdout] | [INFO] [stdout] 70 | pub struct Mutex { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `lock` are never used [INFO] [stdout] --> src/fair_mutex.rs:77:12 [INFO] [stdout] | [INFO] [stdout] 76 | impl Mutex { [INFO] [stdout] | ---------------- associated items in this implementation [INFO] [stdout] 77 | pub fn new(value: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 85 | pub fn lock(&self) -> MutexGuard { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MutexGuard` is never constructed [INFO] [stdout] --> src/kernel_wait_mutex.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct MutexGuard<'a, T> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/kernel_wait_mutex.rs:15:12 [INFO] [stdout] | [INFO] [stdout] 14 | impl<'a, T> MutexGuard<'a, T> { [INFO] [stdout] | ----------------------------- associated function in this implementation [INFO] [stdout] 15 | pub fn new(mux: &'a Mutex) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Mutex` is never constructed [INFO] [stdout] --> src/kernel_wait_mutex.rs:51:12 [INFO] [stdout] | [INFO] [stdout] 51 | pub struct Mutex { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `lock` are never used [INFO] [stdout] --> src/kernel_wait_mutex.rs:57:12 [INFO] [stdout] | [INFO] [stdout] 56 | impl Mutex { [INFO] [stdout] | ---------------- associated items in this implementation [INFO] [stdout] 57 | pub fn new(value: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 64 | pub fn lock(&self) -> MutexGuard { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Mutex` is never constructed [INFO] [stdout] --> src/raw_mutex.rs:18:12 [INFO] [stdout] | [INFO] [stdout] 18 | pub struct Mutex { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `lock`, and `unlock` are never used [INFO] [stdout] --> src/raw_mutex.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 23 | impl Mutex { [INFO] [stdout] | ---------------- associated items in this implementation [INFO] [stdout] 24 | pub fn new(value: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 32 | pub fn lock(&self) -> &mut T { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 40 | pub unsafe fn unlock(&self) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Mutex` is never constructed [INFO] [stdout] --> src/unsafe_spin_mutex.rs:20:12 [INFO] [stdout] | [INFO] [stdout] 20 | pub struct Mutex { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `lock`, and `unlock` are never used [INFO] [stdout] --> src/unsafe_spin_mutex.rs:26:12 [INFO] [stdout] | [INFO] [stdout] 25 | impl Mutex { [INFO] [stdout] | ---------------- associated items in this implementation [INFO] [stdout] 26 | pub fn new(value: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 33 | pub fn lock(&self) -> &mut T { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 42 | pub unsafe fn unlock(&self) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fair_mutex.rs:85:17 [INFO] [stdout] | [INFO] [stdout] 85 | pub fn lock(&self) -> MutexGuard { [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] 85 | pub fn lock(&self) -> MutexGuard<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/kernel_wait_mutex.rs:64:17 [INFO] [stdout] | [INFO] [stdout] 64 | pub fn lock(&self) -> MutexGuard { [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] 64 | pub fn lock(&self) -> MutexGuard<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/safe_spin_mutex.rs:76:17 [INFO] [stdout] | [INFO] [stdout] 76 | pub fn lock(&self) -> MutexGuard { [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] 76 | pub fn lock(&self) -> MutexGuard<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.82s [INFO] running `Command { std: "docker" "inspect" "c2d8e54beefa02cd8c0282429587012843a6da0edfdf83dadc5460dffb331662", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c2d8e54beefa02cd8c0282429587012843a6da0edfdf83dadc5460dffb331662", kill_on_drop: false }` [INFO] [stdout] c2d8e54beefa02cd8c0282429587012843a6da0edfdf83dadc5460dffb331662 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 09cc8c60f2daf6b648c7ccbbc2e5bf2d13953265ef0b7c9956446e2fb66ad243 [INFO] running `Command { std: "docker" "start" "-a" "09cc8c60f2daf6b648c7ccbbc2e5bf2d13953265ef0b7c9956446e2fb66ad243", kill_on_drop: false }` [INFO] [stderr] Compiling mutex v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/fair_mutex.rs:123:17 [INFO] [stdout] | [INFO] [stdout] 123 | for i in 0..10_000 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/kernel_wait_mutex.rs:84:17 [INFO] [stdout] | [INFO] [stdout] 84 | for i in 0..10_000 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | for i in 0..100_000 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Mutex` is never constructed [INFO] [stdout] --> src/unsafe_spin_mutex.rs:20:12 [INFO] [stdout] | [INFO] [stdout] 20 | pub struct Mutex { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `lock`, and `unlock` are never used [INFO] [stdout] --> src/unsafe_spin_mutex.rs:26:12 [INFO] [stdout] | [INFO] [stdout] 25 | impl Mutex { [INFO] [stdout] | ---------------- associated items in this implementation [INFO] [stdout] 26 | pub fn new(value: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 33 | pub fn lock(&self) -> &mut T { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 42 | pub unsafe fn unlock(&self) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/fair_mutex.rs:85:17 [INFO] [stdout] | [INFO] [stdout] 85 | pub fn lock(&self) -> MutexGuard { [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] 85 | pub fn lock(&self) -> MutexGuard<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/kernel_wait_mutex.rs:64:17 [INFO] [stdout] | [INFO] [stdout] 64 | pub fn lock(&self) -> MutexGuard { [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] 64 | pub fn lock(&self) -> MutexGuard<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/safe_spin_mutex.rs:76:17 [INFO] [stdout] | [INFO] [stdout] 76 | pub fn lock(&self) -> MutexGuard { [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] 76 | pub fn lock(&self) -> MutexGuard<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.67s [INFO] running `Command { std: "docker" "inspect" "09cc8c60f2daf6b648c7ccbbc2e5bf2d13953265ef0b7c9956446e2fb66ad243", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "09cc8c60f2daf6b648c7ccbbc2e5bf2d13953265ef0b7c9956446e2fb66ad243", kill_on_drop: false }` [INFO] [stdout] 09cc8c60f2daf6b648c7ccbbc2e5bf2d13953265ef0b7c9956446e2fb66ad243 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] e84d7673941954592acbebe7670aebbefd13d269df4aaa293242bdfc36e6b08f [INFO] running `Command { std: "docker" "start" "-a" "e84d7673941954592acbebe7670aebbefd13d269df4aaa293242bdfc36e6b08f", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/fair_mutex.rs:123:17 [INFO] [stderr] | [INFO] [stderr] 123 | for i in 0..10_000 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/kernel_wait_mutex.rs:84:17 [INFO] [stderr] | [INFO] [stderr] 84 | for i in 0..10_000 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:18:13 [INFO] [stderr] | [INFO] [stderr] 18 | for i in 0..100_000 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: struct `Mutex` is never constructed [INFO] [stderr] --> src/unsafe_spin_mutex.rs:20:12 [INFO] [stderr] | [INFO] [stderr] 20 | pub struct Mutex { [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: associated items `new`, `lock`, and `unlock` are never used [INFO] [stderr] --> src/unsafe_spin_mutex.rs:26:12 [INFO] [stderr] | [INFO] [stderr] 25 | impl Mutex { [INFO] [stderr] | ---------------- associated items in this implementation [INFO] [stderr] 26 | pub fn new(value: T) -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] ... [INFO] [stderr] 33 | pub fn lock(&self) -> &mut T { [INFO] [stderr] | ^^^^ [INFO] [stderr] ... [INFO] [stderr] 42 | pub unsafe fn unlock(&self) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/fair_mutex.rs:85:17 [INFO] [stderr] | [INFO] [stderr] 85 | pub fn lock(&self) -> MutexGuard { [INFO] [stderr] | ^^^^^ ^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 85 | pub fn lock(&self) -> MutexGuard<'_, T> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/kernel_wait_mutex.rs:64:17 [INFO] [stderr] | [INFO] [stderr] 64 | pub fn lock(&self) -> MutexGuard { [INFO] [stderr] | ^^^^^ ^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 64 | pub fn lock(&self) -> MutexGuard<'_, T> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/safe_spin_mutex.rs:76:17 [INFO] [stderr] | [INFO] [stderr] 76 | pub fn lock(&self) -> MutexGuard { [INFO] [stderr] | ^^^^^ ^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 76 | pub fn lock(&self) -> MutexGuard<'_, T> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: `mutex` (bin "mutex" test) generated 8 warnings (run `cargo fix --bin "mutex" --tests` to apply 3 suggestions) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mutex-465db76e7928465c) [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test safe_spin_mutex::tests::it_works ... ok [INFO] [stdout] test raw_mutex::tests::it_works ... ok [INFO] [stdout] test fair_mutex::tests::array ... ok [INFO] [stdout] test kernel_wait_mutex::tests::it_works ... ok [INFO] [stdout] test fair_mutex::tests::it_works ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.58s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "e84d7673941954592acbebe7670aebbefd13d269df4aaa293242bdfc36e6b08f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e84d7673941954592acbebe7670aebbefd13d269df4aaa293242bdfc36e6b08f", kill_on_drop: false }` [INFO] [stdout] e84d7673941954592acbebe7670aebbefd13d269df4aaa293242bdfc36e6b08f