[INFO] cloning repository https://github.com/puppypepper/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/puppypepper/rust_in_action" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuppypepper%2Frust_in_action", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuppypepper%2Frust_in_action'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9fb4aac8d6e05805660be10fb562fb109474ecaa
[INFO] checking puppypepper/rust_in_action against 760e1de835e253bf28bbcbfee38b5e8ed9ffe074 for pr-133502-26
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuppypepper%2Frust_in_action" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/puppypepper/rust_in_action
[INFO] finished tweaking git repo https://github.com/puppypepper/rust_in_action
[INFO] tweaked toml for git repo https://github.com/puppypepper/rust_in_action written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/puppypepper/rust_in_action on toolchain 760e1de835e253bf28bbcbfee38b5e8ed9ffe074
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/puppypepper/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" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1fa6594d87c8fa7b311925a7a77a16f539833322d9dfba4ce891f211db2f90b1" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 5825f9d4bc007cd3a709fab8de650ca2229a464465642aef11a8d054713b8503
[INFO] running `Command { std: "docker" "start" "5825f9d4bc007cd3a709fab8de650ca2229a464465642aef11a8d054713b8503", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5825f9d4bc007cd3a709fab8de650ca2229a464465642aef11a8d054713b8503" "/opt/rustwide/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5825f9d4bc007cd3a709fab8de650ca2229a464465642aef11a8d054713b8503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5825f9d4bc007cd3a709fab8de650ca2229a464465642aef11a8d054713b8503" "/opt/rustwide/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: value assigned to `cpu` is never read
[INFO] [stdout]   --> chapter-5/src/chip-8.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     cpu.registers[1] = 10;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `current_opcode`, `run`, and `add_xy` are never used
[INFO] [stdout]   --> chapter-5/src/chip-8.rs:7:8
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl CPU {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout]  7 |     fn current_opcode(&self) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn run(&mut self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn add_xy(&mut self, x: u8, y: u8) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exponent`
[INFO] [stdout]  --> chapter-5/src/list5-8.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let exponent = _exponent - 127;
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exponent`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> chapter-5/src/list5-2.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let frankentype: 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] 3 -     let frankentype: u32 = unsafe { std::mem::transmute(a) };
[INFO] [stdout] 3 +     let frankentype: u32 = unsafe { f32::to_bits(a) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> chapter-5/src/list5-2.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let b: f32 = unsafe { std::mem::transmute(frankentype) };
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 8 -     let b: f32 = unsafe { std::mem::transmute(frankentype) };
[INFO] [stdout] 8 +     let b: f32 = unsafe { f32::from_bits(frankentype) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking wayland-commons v0.28.6
[INFO] [stdout] warning: unused variable: `sat`
[INFO] [stdout]   --> chapter-4/src/list4-18.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn check_status(sat: CubeSat) -> StatusMessage {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_sat`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]  --> chapter-4/src/list4-18.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct CubeSat {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 3 |     id: u64,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CubeSat` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> chapter-4/src/list4-6.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Demo {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 4 |     value: i32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exponent`
[INFO] [stdout]  --> chapter-5/src/list5-8.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let exponent = _exponent - 127;
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exponent`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> chapter-5/src/list5-2.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let frankentype: 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] 3 -     let frankentype: u32 = unsafe { std::mem::transmute(a) };
[INFO] [stdout] 3 +     let frankentype: u32 = unsafe { f32::to_bits(a) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> chapter-5/src/list5-2.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let b: f32 = unsafe { std::mem::transmute(frankentype) };
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 8 -     let b: f32 = unsafe { std::mem::transmute(frankentype) };
[INFO] [stdout] 8 +     let b: f32 = unsafe { f32::from_bits(frankentype) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sat_id`
[INFO] [stdout]  --> chapter-4/src/list4-1.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn check_message(sat_id: i64) -> StatusMessage {
[INFO] [stdout]   |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sat_id`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sat`
[INFO] [stdout]   --> chapter-4/src/list4-2.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn check_message(sat: &CubeSat) -> StatusMessage {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_sat`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]  --> chapter-4/src/list4-2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct CubeSat {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 2 |     id: i64,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sat`
[INFO] [stdout]   --> chapter-4/src/list4-18.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn check_status(sat: CubeSat) -> StatusMessage {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_sat`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]  --> chapter-4/src/list4-18.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct CubeSat {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 3 |     id: u64,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CubeSat` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> chapter-5/src/list5-6.rs:5:27
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a: i32 = unsafe { std::mem::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]   = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 5 -     let a: i32 = unsafe { std::mem::transmute(big_endian) };
[INFO] [stdout] 5 +     let a: i32 = unsafe { i32::from_ne_bytes(big_endian) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> chapter-5/src/list5-6.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let b: i32 = unsafe { std::mem::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] 6 -     let b: i32 = unsafe { std::mem::transmute(little_endian) };
[INFO] [stdout] 6 +     let b: i32 = unsafe { i32::from_ne_bytes(little_endian) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> chapter-4/src/list4-6.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Demo {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 4 |     value: i32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cpu` is never read
[INFO] [stdout]   --> chapter-5/src/chip-8.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     cpu.registers[1] = 10;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `current_opcode`, `run`, and `add_xy` are never used
[INFO] [stdout]   --> chapter-5/src/chip-8.rs:7:8
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl CPU {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout]  7 |     fn current_opcode(&self) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn run(&mut self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn add_xy(&mut self, x: u8, y: u8) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> chapter-5/src/list5-6.rs:5:27
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a: i32 = unsafe { std::mem::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]   = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 5 -     let a: i32 = unsafe { std::mem::transmute(big_endian) };
[INFO] [stdout] 5 +     let a: i32 = unsafe { i32::from_ne_bytes(big_endian) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> chapter-5/src/list5-6.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let b: i32 = unsafe { std::mem::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] 6 -     let b: i32 = unsafe { std::mem::transmute(little_endian) };
[INFO] [stdout] 6 +     let b: i32 = unsafe { i32::from_ne_bytes(little_endian) };
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sat`
[INFO] [stdout]   --> chapter-4/src/list4-2.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn check_message(sat: &CubeSat) -> StatusMessage {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_sat`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]  --> chapter-4/src/list4-2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct CubeSat {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 2 |     id: i64,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sat_id`
[INFO] [stdout]  --> chapter-4/src/list4-1.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn check_message(sat_id: i64) -> StatusMessage {
[INFO] [stdout]   |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sat_id`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking piston-gfx_texture v0.41.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.72.0
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]     Checking wayland-cursor v0.28.6
[INFO] [stderr]     Checking wayland-egl v0.28.6
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_derive v1.0.218
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.7.5
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling icu_provider_macros v1.5.0
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.7.5
[INFO] [stderr]     Checking zerovec v0.10.4
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tinystr v0.7.6
[INFO] [stderr]     Checking icu_collections v1.5.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking icu_locid v1.5.0
[INFO] [stderr]     Checking icu_provider v1.5.0
[INFO] [stderr]     Checking icu_locid_transform v1.5.0
[INFO] [stderr]     Checking chapter-3 v0.1.0 (/opt/rustwide/workdir/chapter-3)
[INFO] [stdout] warning: unused variable: `save_to`
[INFO] [stdout]  --> chapter-3/src/list3-12.rs:9:26
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn read(self: &File, save_to: &mut Vec<u8>) -> Result<usize, String> {
[INFO] [stdout]   |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_save_to`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `save_to`
[INFO] [stdout]  --> chapter-3/src/list3-12.rs:9:26
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn read(self: &File, save_to: &mut Vec<u8>) -> Result<usize, String> {
[INFO] [stdout]   |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_save_to`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking icu_properties v1.5.1
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> chapter-3/src/list3-2.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let y = &x.data;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> chapter-3/src/list3-2.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let z = &(x.data);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> chapter-3/src/list3-2.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let v = x.data;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> chapter-3/src/list3-2.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let t = x.data2;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> chapter-3/src/list3-5.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn open(f: &mut File) -> bool {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> chapter-3/src/list3-5.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn close(f: &mut File) -> bool {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> chapter-3/src/list3-3.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn open(f: &mut File) -> bool {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> chapter-3/src/list3-3.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn close(f: &mut File) -> bool {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> chapter-3/src/list3-1.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn open(f: &mut File) -> bool {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> chapter-3/src/list3-1.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn close(f: &mut File) -> bool {
[INFO] [stdout]   |          ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> chapter-3/src/list3-1.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn read(f: &mut File, save_to: &mut Vec<u8>) -> ! {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `save_to`
[INFO] [stdout]   --> chapter-3/src/list3-1.rs:13:23
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn read(f: &mut File, save_to: &mut Vec<u8>) -> ! {
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_save_to`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read` is never used
[INFO] [stdout]   --> chapter-3/src/list3-1.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn read(f: &mut File, save_to: &mut Vec<u8>) -> ! {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> chapter-3/src/list3-2.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let y = &x.data;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> chapter-3/src/list3-2.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let z = &(x.data);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> chapter-3/src/list3-2.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let v = x.data;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> chapter-3/src/list3-2.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let t = x.data2;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> chapter-3/src/list3-1.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn open(f: &mut File) -> bool {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> chapter-3/src/list3-1.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn close(f: &mut File) -> bool {
[INFO] [stdout]   |          ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> chapter-3/src/list3-1.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn read(f: &mut File, save_to: &mut Vec<u8>) -> ! {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `save_to`
[INFO] [stdout]   --> chapter-3/src/list3-1.rs:13:23
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn read(f: &mut File, save_to: &mut Vec<u8>) -> ! {
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_save_to`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read` is never used
[INFO] [stdout]   --> chapter-3/src/list3-1.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn read(f: &mut File, save_to: &mut Vec<u8>) -> ! {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> chapter-3/src/list3-5.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn open(f: &mut File) -> bool {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> chapter-3/src/list3-5.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn close(f: &mut File) -> bool {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> chapter-3/src/list3-3.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn open(f: &mut File) -> bool {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> chapter-3/src/list3-3.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn close(f: &mut File) -> bool {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking pistoncore-input v1.0.1
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking icu_normalizer v1.5.0
[INFO] [stderr]     Checking idna_adapter v1.2.0
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking pistoncore-window v0.47.1
[INFO] [stderr]     Checking pistoncore-event_loop v0.52.0
[INFO] [stderr]     Checking url v2.5.4
[INFO] [stderr]     Checking piston v0.52.1
[INFO] [stderr]     Checking publicsuffix v1.5.6
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking chapter-8 v0.1.0 (/opt/rustwide/workdir/chapter-8)
[INFO] [stderr]     Checking smithay-client-toolkit v0.12.3
[INFO] [stderr]     Checking winit v0.24.0
[INFO] [stderr]     Checking glutin v0.26.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.68.2
[INFO] [stderr]     Checking piston_window v0.117.0
[INFO] [stderr]     Checking chapter-6 v0.1.0 (/opt/rustwide/workdir/chapter-6)
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]  --> chapter-6/src/list6-9.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let (width, height) = (1280.0, 960.0);
[INFO] [stdout]   |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]  --> chapter-6/src/list6-9.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let (width, height) = (1280.0, 960.0);
[INFO] [stdout]   |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]  --> chapter-6/src/list6-9.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let (width, height) = (1280.0, 960.0);
[INFO] [stdout]   |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]  --> chapter-6/src/list6-9.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let (width, height) = (1280.0, 960.0);
[INFO] [stdout]   |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "5825f9d4bc007cd3a709fab8de650ca2229a464465642aef11a8d054713b8503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5825f9d4bc007cd3a709fab8de650ca2229a464465642aef11a8d054713b8503", kill_on_drop: false }`
[INFO] [stdout] 5825f9d4bc007cd3a709fab8de650ca2229a464465642aef11a8d054713b8503
