[INFO] cloning repository https://github.com/seanzian2093/rust_in_action
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seanzian2093/rust_in_action" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanzian2093%2Frust_in_action", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanzian2093%2Frust_in_action'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74b8661c485f454ffcf0d229da72bc770ca79379
[INFO] checking seanzian2093/rust_in_action against master#cb40c25f6aebb637163d26bf76a680ed6e5d1eda for pr-156157-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanzian2093%2Frust_in_action" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/seanzian2093/rust_in_action
[INFO] finished tweaking git repo https://github.com/seanzian2093/rust_in_action
[INFO] tweaked toml for git repo https://github.com/seanzian2093/rust_in_action written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/seanzian2093/rust_in_action on toolchain cb40c25f6aebb637163d26bf76a680ed6e5d1eda
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/seanzian2093/rust_in_action 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" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8552d9f0e8937cc254f5a9ad424095c459236376656bff0879262893b0f74eb
[INFO] running `Command { std: "docker" "start" "-a" "d8552d9f0e8937cc254f5a9ad424095c459236376656bff0879262893b0f74eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8552d9f0e8937cc254f5a9ad424095c459236376656bff0879262893b0f74eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8552d9f0e8937cc254f5a9ad424095c459236376656bff0879262893b0f74eb", kill_on_drop: false }`
[INFO] [stdout] d8552d9f0e8937cc254f5a9ad424095c459236376656bff0879262893b0f74eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85efa0caa2c55536be69063af67304c70e7cf2f916bb77ea42345840d8bb0593
[INFO] running `Command { std: "docker" "start" "-a" "85efa0caa2c55536be69063af67304c70e7cf2f916bb77ea42345840d8bb0593", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
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[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking chacha20 v0.10.0-rc.2
[INFO] [stderr]     Checking tiny-skia v0.8.4
[INFO] [stderr]     Checking gfx_core v0.9.2
[INFO] [stderr]     Checking smithay-client-toolkit v0.19.2
[INFO] [stderr]     Checking ecolor v0.33.0
[INFO] [stderr]     Checking pistoncore-input v1.0.1
[INFO] [stderr]     Checking tiny-skia-path v0.11.4
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking gethostname v1.1.0
[INFO] [stderr]     Checking tokio-util v0.7.16
[INFO] [stderr]    Compiling winit v0.28.7
[INFO] [stderr]    Compiling glutin v0.30.10
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]    Compiling wgpu-core v27.0.1
[INFO] [stderr]     Checking raw-window-handle v0.5.2
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling litrs v0.4.2
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]     Checking epaint_default_fonts v0.33.0
[INFO] [stderr]     Checking anstyle-query v1.1.4
[INFO] [stderr]     Checking crc-catalog v2.4.0
[INFO] [stderr]     Checking ttf-parser v0.15.2
[INFO] [stderr]    Compiling gl v0.13.0
[INFO] [stderr]     Checking crc v3.3.0
[INFO] [stderr]    Compiling document-features v0.2.11
[INFO] [stderr]     Checking anstream v0.6.20
[INFO] [stderr]     Checking epaint v0.33.0
[INFO] [stderr]     Checking x11rb v0.13.2
[INFO] [stderr]     Checking h2 v0.4.12
[INFO] [stderr]     Checking owned_ttf_parser v0.15.2
[INFO] [stderr]     Checking pistoncore-window v1.0.0
[INFO] [stderr]     Checking tiny-skia v0.11.4
[INFO] [stderr]     Checking rand v0.10.0-rc.0
[INFO] [stderr]    Compiling glutin-winit v0.3.0
[INFO] [stderr]    Compiling gfx_gl v0.6.1
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]    Compiling wgpu v27.0.1
[INFO] [stderr]    Compiling winit v0.30.12
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]     Checking piston-texture v0.9.0
[INFO] [stderr]     Checking clap_lex v0.7.6
[INFO] [stderr]     Checking egui v0.33.0
[INFO] [stderr]     Checking clap_builder v4.5.50
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking hyper v1.7.0
[INFO] [stderr]     Checking sctk-adwaita v0.10.1
[INFO] [stderr]     Checking rusttype v0.9.3
[INFO] [stderr]     Checking gfx v0.18.3
[INFO] [stderr]     Checking wayland-protocols-plasma v0.3.9
[INFO] [stderr]     Checking shader_version v0.7.0
[INFO] [stderr]     Checking xkbcommon-dl v0.4.2
[INFO] [stderr]     Checking vecmath v1.0.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]     Checking read_color v1.0.0
[INFO] [stderr]     Checking interpolation v0.3.0
[INFO] [stderr]     Checking spin_sleep v1.3.3
[INFO] [stderr]     Checking rustc-hash v2.1.1
[INFO] [stderr]     Checking tower v0.5.2
[INFO] [stderr]     Checking type-map v0.5.1
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking hyper-util v0.1.17
[INFO] [stderr]     Checking pistoncore-event_loop v1.0.0
[INFO] [stderr]     Checking piston2d-graphics v0.44.0
[INFO] [stderr]     Checking clap v4.5.50
[INFO] [stderr]     Checking piston-gfx_texture v0.45.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]     Checking arboard v3.6.1
[INFO] [stderr]     Checking ch7-actionkv v0.1.0 (/opt/rustwide/workdir/ch7/ch7-actionkv)
[INFO] [stderr]     Checking smithay-clipboard v0.7.2
[INFO] [stderr]     Checking http-body-util v0.1.3
[INFO] [stderr]     Checking webbrowser v1.0.6
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.4.0
[INFO] [stderr]     Checking unicode-bidi v0.3.18
[INFO] [stderr]     Checking svg v0.18.0
[INFO] [stderr]     Checking tower-http v0.6.6
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking rustls-pki-types v1.12.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.81.0
[INFO] [stderr]    Compiling enum-as-inner v0.6.1
[INFO] [stderr]     Checking sctk-adwaita v0.5.4
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking gfx_device_gl v0.16.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking piston v1.0.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]     Checking lin_alg v1.3.9
[INFO] [stderr]     Checking pollster v0.4.0
[INFO] [stderr]     Checking obj v0.10.2
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking reqwest v0.12.24
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking trust-dns-proto v0.23.2
[INFO] [stderr]     Checking ch5_q v0.1.0 (/opt/rustwide/workdir/ch5/ch5_q)
[INFO] [stderr]     Checking ch5 v0.1.0 (/opt/rustwide/workdir/ch5)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> ch5/src/ch5_2_f32_as_u32.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let franken_type: u32 = unsafe { std::mem::transmute(a) };
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 4 -     let franken_type: u32 = unsafe { std::mem::transmute(a) };
[INFO] [stdout] 4 +     let franken_type: u32 = unsafe { f32::to_bits(a) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> ch5/src/ch5_2_f32_as_u32.rs:13:27
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let b: f32 = unsafe { std::mem::transmute(franken_type) };
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: replace this with
[INFO] [stdout]    |
[INFO] [stdout] 13 -     let b: f32 = unsafe { std::mem::transmute(franken_type) };
[INFO] [stdout] 13 +     let b: f32 = unsafe { f32::from_bits(franken_type) };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> ch5/src/ch5_6_endianess.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let a: i32 = unsafe { transmute(big_endian) };
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 6 -     let a: i32 = unsafe { transmute(big_endian) };
[INFO] [stdout] 6 +     let a: i32 = unsafe { i32::from_ne_bytes(big_endian) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> ch5/src/ch5_6_endianess.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let b: i32 = unsafe { transmute(little_endian) };
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 7 -     let b: i32 = unsafe { transmute(little_endian) };
[INFO] [stdout] 7 +     let b: i32 = unsafe { i32::from_ne_bytes(little_endian) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> ch5/src/ch5_2_f32_as_u32.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let franken_type: u32 = unsafe { std::mem::transmute(a) };
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 4 -     let franken_type: u32 = unsafe { std::mem::transmute(a) };
[INFO] [stdout] 4 +     let franken_type: u32 = unsafe { f32::to_bits(a) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> ch5/src/ch5_2_f32_as_u32.rs:13:27
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let b: f32 = unsafe { std::mem::transmute(franken_type) };
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: replace this with
[INFO] [stdout]    |
[INFO] [stdout] 13 -     let b: f32 = unsafe { std::mem::transmute(franken_type) };
[INFO] [stdout] 13 +     let b: f32 = unsafe { f32::from_bits(franken_type) };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> ch5/src/ch5_6_endianess.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let a: i32 = unsafe { transmute(big_endian) };
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 6 -     let a: i32 = unsafe { transmute(big_endian) };
[INFO] [stdout] 6 +     let a: i32 = unsafe { i32::from_ne_bytes(big_endian) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> ch5/src/ch5_6_endianess.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let b: i32 = unsafe { transmute(little_endian) };
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 7 -     let b: i32 = unsafe { transmute(little_endian) };
[INFO] [stdout] 7 +     let b: i32 = unsafe { i32::from_ne_bytes(little_endian) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking pistoncore-glutin_window v0.72.0
[INFO] [stderr]     Checking ch8-simple v0.1.0 (/opt/rustwide/workdir/ch8/ch8-simple)
[INFO] [stderr]     Checking piston_window v0.132.0
[INFO] [stderr]     Checking ch10-render-hex-functional v0.1.0 (/opt/rustwide/workdir/ch10/ch10-render-hex-functional)
[INFO] [stderr]     Checking ch10-render-hex v0.1.0 (/opt/rustwide/workdir/ch10/ch10-render-hex)
[INFO] [stderr]     Checking ch9-clock v0.1.0 (/opt/rustwide/workdir/ch9/ch9-clock)
[INFO] [stdout] warning: unused imports: `Datelike` and `Timelike`
[INFO] [stdout]   --> ch9/ch9-clock/src/main.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | use chrono::{Local, DateTime, Timelike, Datelike, TimeZone};
[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: `Datelike` and `Timelike`
[INFO] [stdout]   --> ch9/ch9-clock/src/main.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | use chrono::{Local, DateTime, Timelike, Datelike, TimeZone};
[INFO] [stdout]    |                               ^^^^^^^^  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch10-channels-intro v0.1.0 (/opt/rustwide/workdir/ch10/ch10-channels-intro)
[INFO] [stderr]     Checking ch10-channels-complex v0.1.0 (/opt/rustwide/workdir/ch10/ch10-channels-complex)
[INFO] [stderr]     Checking ch12-basic-handler v0.1.0 (/opt/rustwide/workdir/ch12/ch12-basic-handler)
[INFO] [stderr]     Checking ch12-ignore v0.1.0 (/opt/rustwide/workdir/ch12/ch12-ignore)
[INFO] [stderr]     Checking ch7-serde-eg v0.1.0 (/opt/rustwide/workdir/ch7/ch7-serde-eg)
[INFO] [stdout] warning: direct cast of function item into an integer
[INFO] [stdout]   --> ch12/ch12-basic-handler/src/main.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         libc::signal(SIGTERM, handle_sigterm as usize);
[INFO] [stdout]    |                                              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(function_casts_as_integer)]` on by default
[INFO] [stdout] help: first cast to a pointer `as *const ()`
[INFO] [stdout]    |
[INFO] [stdout] 42 |         libc::signal(SIGTERM, handle_sigterm as *const () as usize);
[INFO] [stdout]    |                                              ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: direct cast of function item into an integer
[INFO] [stdout]   --> ch12/ch12-basic-handler/src/main.rs:43:46
[INFO] [stdout]    |
[INFO] [stdout] 43 |         libc::signal(SIGUSR1, handle_sigusr1 as usize);
[INFO] [stdout]    |                                              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: first cast to a pointer `as *const ()`
[INFO] [stdout]    |
[INFO] [stdout] 43 |         libc::signal(SIGUSR1, handle_sigusr1 as *const () as usize);
[INFO] [stdout]    |                                              ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch8-macgen v0.1.0 (/opt/rustwide/workdir/ch8/ch8-mac)
[INFO] [stdout] warning: direct cast of function item into an integer
[INFO] [stdout]   --> ch12/ch12-basic-handler/src/main.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         libc::signal(SIGTERM, handle_sigterm as usize);
[INFO] [stdout]    |                                              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(function_casts_as_integer)]` on by default
[INFO] [stdout] help: first cast to a pointer `as *const ()`
[INFO] [stdout]    |
[INFO] [stdout] 42 |         libc::signal(SIGTERM, handle_sigterm as *const () as usize);
[INFO] [stdout]    |                                              ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: direct cast of function item into an integer
[INFO] [stdout]   --> ch12/ch12-basic-handler/src/main.rs:43:46
[INFO] [stdout]    |
[INFO] [stdout] 43 |         libc::signal(SIGUSR1, handle_sigusr1 as usize);
[INFO] [stdout]    |                                              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: first cast to a pointer `as *const ()`
[INFO] [stdout]    |
[INFO] [stdout] 43 |         libc::signal(SIGUSR1, handle_sigusr1 as *const () as usize);
[INFO] [stdout]    |                                              ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch12-toy-global v0.1.0 (/opt/rustwide/workdir/ch12/ch12-toy-global)
[INFO] [stderr]     Checking ch7-write123 v0.1.0 (/opt/rustwide/workdir/ch7/ch7-write123)
[INFO] [stderr]     Checking ch8-stdlib v0.1.0 (/opt/rustwide/workdir/ch8/ch8-stdlib)
[INFO] [stderr]     Checking misc v0.1.0 (/opt/rustwide/workdir/ch8/misc)
[INFO] [stderr]     Checking ch10-multijoin v0.1.0 (/opt/rustwide/workdir/ch10/ch10-multijoin)
[INFO] [stderr]     Checking ch10-busythreads v0.1.0 (/opt/rustwide/workdir/ch10/ch10-busythreads)
[INFO] [stderr]     Checking ch10 v0.1.0 (/opt/rustwide/workdir/ch10)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> ch8/misc/wraperror.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     IO(io::Error),
[INFO] [stdout]    |     -- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UpstreamError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 10 -     IO(io::Error),
[INFO] [stdout] 10 +     IO(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> ch8/misc/wraperror.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Parsing(net::AddrParseError),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UpstreamError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 11 -     Parsing(net::AddrParseError),
[INFO] [stdout] 11 +     Parsing(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch7 v0.1.0 (/opt/rustwide/workdir/ch7)
[INFO] [stderr]     Checking ch8 v0.1.0 (/opt/rustwide/workdir/ch8)
[INFO] [stderr]     Checking ch12 v0.1.0 (/opt/rustwide/workdir/ch12)
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]   --> ch7/src/ch7_3.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     INPUT.read_to_end(&mut buffer)?;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: mutable reference created due to call to this method
[INFO] [stdout]   --> /rustc/cb40c25f6aebb637163d26bf76a680ed6e5d1eda/library/std/src/io/mod.rs:917:4
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]   --> ch7/src/ch7_3.rs:6:1
[INFO] [stdout]    |
[INFO] [stdout]  6 | const INPUT: &'static [u8] = br#"
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(const_item_mutation)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]   --> ch7/src/ch7_3.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     INPUT.read_to_end(&mut buffer)?;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: mutable reference created due to call to this method
[INFO] [stdout]   --> /rustc/cb40c25f6aebb637163d26bf76a680ed6e5d1eda/library/std/src/io/mod.rs:917:4
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]   --> ch7/src/ch7_3.rs:6:1
[INFO] [stdout]    |
[INFO] [stdout]  6 | const INPUT: &'static [u8] = br#"
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(const_item_mutation)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch9 v0.1.0 (/opt/rustwide/workdir/ch9)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> ch8/misc/wraperror.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     IO(io::Error),
[INFO] [stdout]    |     -- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UpstreamError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 10 -     IO(io::Error),
[INFO] [stdout] 10 +     IO(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> ch8/misc/wraperror.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Parsing(net::AddrParseError),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UpstreamError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 11 -     Parsing(net::AddrParseError),
[INFO] [stdout] 11 +     Parsing(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch6 v0.1.0 (/opt/rustwide/workdir/ch6)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> ch8/misc/wraperror2.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     IO(io::Error),
[INFO] [stdout]    |     -- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UpstreamError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 10 -     IO(io::Error),
[INFO] [stdout] 10 +     IO(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> ch8/misc/wraperror2.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Parsing(net::AddrParseError),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UpstreamError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 11 -     Parsing(net::AddrParseError),
[INFO] [stdout] 11 +     Parsing(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function returns a dangling pointer to dropped local variable `noop_local`
[INFO] [stdout]  --> ch6/src/ch6_14.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn noop() -> *const i32 {
[INFO] [stdout]   |              ---------- return type is `*const i32`
[INFO] [stdout] 6 |     let noop_local = 12345;
[INFO] [stdout]   |         ---------- local variable `noop_local` is dropped at the end of the function
[INFO] [stdout] 7 |     &noop_local as *const i32
[INFO] [stdout]   |     -----------^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     dangling pointer created here
[INFO] [stdout]   |
[INFO] [stdout]   = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]   = note: `#[warn(dangling_pointers_from_locals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function returns a dangling pointer to dropped local variable `noop_local`
[INFO] [stdout]  --> ch6/src/ch6_14.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn noop() -> *const i32 {
[INFO] [stdout]   |              ---------- return type is `*const i32`
[INFO] [stdout] 6 |     let noop_local = 12345;
[INFO] [stdout]   |         ---------- local variable `noop_local` is dropped at the end of the function
[INFO] [stdout] 7 |     &noop_local as *const i32
[INFO] [stdout]   |     -----------^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     dangling pointer created here
[INFO] [stdout]   |
[INFO] [stdout]   = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]   = note: `#[warn(dangling_pointers_from_locals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> ch8/misc/wraperror2.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     IO(io::Error),
[INFO] [stdout]    |     -- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UpstreamError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 10 -     IO(io::Error),
[INFO] [stdout] 10 +     IO(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> ch8/misc/wraperror2.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Parsing(net::AddrParseError),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UpstreamError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 11 -     Parsing(net::AddrParseError),
[INFO] [stdout] 11 +     Parsing(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking egui-winit v0.33.0
[INFO] [stderr]     Checking ch8-resolve v0.1.0 (/opt/rustwide/workdir/ch8/ch8-resolve)
[INFO] [stderr]     Checking wgpu-core-deps-windows-linux-android v27.0.0
[INFO] [stderr]     Checking egui-wgpu v0.33.0
[INFO] [stderr]     Checking graphics v0.5.0
[INFO] [stderr]     Checking ch6-particles v0.1.0 (/opt/rustwide/workdir/ch6/ch6_particles)
[INFO] [stdout] warning: unused variable: `time_taken`
[INFO] [stdout]   --> ch6/ch6_particles/main.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let time_taken = end - start;
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_time_taken`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_requested`
[INFO] [stdout]   --> ch6/ch6_particles/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let bytes_requested = layout.size();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_requested`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `time_taken`
[INFO] [stdout]   --> ch6/ch6_particles/main.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let time_taken = end - start;
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_time_taken`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_requested`
[INFO] [stdout]   --> ch6/ch6_particles/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let bytes_requested = layout.size();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_requested`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 07s
[INFO] running `Command { std: "docker" "inspect" "85efa0caa2c55536be69063af67304c70e7cf2f916bb77ea42345840d8bb0593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85efa0caa2c55536be69063af67304c70e7cf2f916bb77ea42345840d8bb0593", kill_on_drop: false }`
[INFO] [stdout] 85efa0caa2c55536be69063af67304c70e7cf2f916bb77ea42345840d8bb0593
