[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 try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuppypepper%2Frust_in_action" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-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-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/puppypepper/rust_in_action on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c5a3df83b7dbc99beacb9b70a8bc086e98ad6245e83448ba92d5d01b885eb618 [INFO] running `Command { std: "docker" "start" "-a" "c5a3df83b7dbc99beacb9b70a8bc086e98ad6245e83448ba92d5d01b885eb618", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c5a3df83b7dbc99beacb9b70a8bc086e98ad6245e83448ba92d5d01b885eb618", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c5a3df83b7dbc99beacb9b70a8bc086e98ad6245e83448ba92d5d01b885eb618", kill_on_drop: false }` [INFO] [stdout] c5a3df83b7dbc99beacb9b70a8bc086e98ad6245e83448ba92d5d01b885eb618 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f161721438fa818dc724142153b74f6c1d02126bf4a155f00825f43d14b8ee3b [INFO] running `Command { std: "docker" "start" "-a" "f161721438fa818dc724142153b74f6c1d02126bf4a155f00825f43d14b8ee3b", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.162 [INFO] [stderr] Checking log v0.4.26 [INFO] [stderr] Compiling xml-rs v0.8.25 [INFO] [stderr] Checking either v1.14.0 [INFO] [stderr] Checking smallvec v1.14.0 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Checking num-iter v0.1.45 [INFO] [stderr] Checking num-rational v0.4.2 [INFO] [stderr] Checking num-complex v0.4.6 [INFO] [stderr] Compiling serde v1.0.218 [INFO] [stderr] Compiling wayland-sys v0.28.6 [INFO] [stderr] Compiling syn v2.0.89 [INFO] [stderr] Checking libloading v0.8.6 [INFO] [stderr] Checking piston-float v1.0.1 [INFO] [stderr] Checking owned_ttf_parser v0.15.2 [INFO] [stderr] Checking piston-viewport v1.0.2 [INFO] [stderr] Compiling x11-dl v2.21.0 [INFO] [stderr] Checking dlib v0.5.2 [INFO] [stderr] Checking rusttype v0.9.3 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Checking piston-graphics_api_version v1.0.1 [INFO] [stderr] Checking num v0.4.3 [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Compiling num-rational v0.3.2 [INFO] [stderr] Checking libloading v0.6.7 [INFO] [stderr] Compiling wayland-scanner v0.28.6 [INFO] [stderr] Compiling gl_generator v0.14.0 [INFO] [stderr] Checking xcursor v0.3.8 [INFO] [stderr] Checking dlib v0.4.2 [INFO] [stderr] Compiling gl_generator v0.13.1 [INFO] [stderr] Checking andrew v0.3.1 [INFO] [stderr] Checking gfx_core v0.9.2 [INFO] [stderr] Checking deflate v0.8.6 [INFO] [stderr] Compiling glutin_glx_sys v0.1.8 [INFO] [stderr] Checking getrandom v0.2.15 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.39 [INFO] [stderr] Compiling wayland-client v0.28.6 [INFO] [stderr] Checking nix v0.20.0 [INFO] [stderr] Compiling wayland-protocols v0.28.6 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Checking nix v0.18.0 [INFO] [stderr] Checking parking_lot_core v0.8.6 [INFO] [stderr] Checking jpeg-decoder v0.1.22 [INFO] [stderr] Checking memmap2 v0.1.0 [INFO] [stderr] Compiling glutin_egl_sys v0.1.6 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Checking lazycell v1.3.0 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stderr] Checking tiff v0.6.1 [INFO] [stderr] Checking gif v0.11.4 [INFO] [stderr] Checking parking_lot v0.11.2 [INFO] [stderr] Compiling gl v0.13.0 [INFO] [stderr] Checking png v0.16.8 [INFO] [stderr] Checking shared_library v0.1.9 [INFO] [stderr] Checking raw-window-handle v0.3.4 [INFO] [stderr] Compiling gfx_gl v0.6.1 [INFO] [stderr] Checking wayland-commons v0.28.6 [INFO] [stderr] Compiling synstructure v0.13.1 [INFO] [stderr] Checking calloop v0.6.5 [INFO] [stderr] Checking bytemuck v1.21.0 [INFO] [stderr] Checking piston-texture v0.8.0 [INFO] [stderr] Checking image v0.23.14 [INFO] [stderr] Checking osmesa-sys v0.1.2 [INFO] [stderr] Checking wayland-cursor v0.28.6 [INFO] [stderr] Checking wayland-egl v0.28.6 [INFO] [stderr] Checking gfx v0.18.3 [INFO] [stderr] Checking shader_version v0.7.0 [INFO] [stderr] Checking vecmath v1.0.0 [INFO] [stderr] Checking read_color v1.0.0 [INFO] [stderr] Checking 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[stderr] Checking parking_lot v0.9.0 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling object v0.36.7 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking crossbeam-deque v0.7.4 [INFO] [stderr] Checking icu_provider v1.5.0 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking http v0.1.21 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking gimli v0.31.1 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking icu_locid_transform v1.5.0 [INFO] [stderr] Compiling openssl v0.10.72 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking icu_properties v1.5.1 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Compiling openssl-macros v0.1.1 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking addr2line v0.24.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking string v0.2.1 [INFO] [stderr] Checking tokio-buf v0.1.1 [INFO] [stderr] Compiling hyper v0.12.36 [INFO] [stderr] Checking icu_normalizer v1.5.0 [INFO] [stderr] Checking form_urlencoded v1.2.1 [INFO] [stderr] Checking pistoncore-input v1.0.1 [INFO] [stderr] Checking bitflags v2.9.0 [INFO] [stderr] Compiling native-tls v0.2.14 [INFO] [stderr] Checking http-body v0.1.0 [INFO] [stderr] Checking want v0.2.0 [INFO] [stderr] Checking h2 v0.1.26 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking idna v0.2.3 [INFO] [stderr] Checking idna_adapter v1.2.0 [INFO] [stderr] Checking idna v1.0.3 [INFO] [stderr] Checking url v2.5.4 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking serde_json v1.0.140 [INFO] [stderr] Checking pistoncore-window v0.47.1 [INFO] [stderr] Checking pistoncore-event_loop v0.52.0 [INFO] [stderr] Checking piston v0.52.1 [INFO] [stderr] Checking publicsuffix v1.5.6 [INFO] [stderr] Checking cookie v0.12.0 [INFO] [stderr] Checking try_from v0.3.2 [INFO] [stderr] Checking serde_urlencoded v0.5.5 [INFO] [stderr] Checking flate2 v1.1.1 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking uuid v0.7.4 [INFO] [stderr] Checking backtrace v0.3.74 [INFO] [stderr] Checking chapter-3 v0.1.0 (/opt/rustwide/workdir/chapter-3) [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) -> ! { [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) -> ! { [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) -> ! { [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: `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) -> Result { [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 failure v0.1.8 [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) -> ! { [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) -> ! { [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) -> ! { [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 cookie_store v0.7.0 [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] [stderr] Checking smithay-client-toolkit v0.12.3 [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: `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: `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] [stderr] Checking grep-lite v0.1.0 (/opt/rustwide/workdir/grep-lite) [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) -> Result { [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 rust_in_action v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/list2-5.rs:5:14 [INFO] [stdout] | [INFO] [stdout] 5 | let b_ = b.try_into().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_in_action` (bin "list2-5") due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/list2-5.rs:5:14 [INFO] [stdout] | [INFO] [stdout] 5 | let b_ = b.try_into().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_in_action` (bin "list2-5" test) due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "f161721438fa818dc724142153b74f6c1d02126bf4a155f00825f43d14b8ee3b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f161721438fa818dc724142153b74f6c1d02126bf4a155f00825f43d14b8ee3b", kill_on_drop: false }` [INFO] [stdout] f161721438fa818dc724142153b74f6c1d02126bf4a155f00825f43d14b8ee3b