[INFO] cloning repository https://github.com/Mr-Helpful/acoding [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mr-Helpful/acoding" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMr-Helpful%2Facoding", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMr-Helpful%2Facoding'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 53b10e7c0f9b39dc499891070ada0d12bd2e6eda [INFO] checking Mr-Helpful/acoding 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%2FMr-Helpful%2Facoding" "/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/Mr-Helpful/acoding [INFO] finished tweaking git repo https://github.com/Mr-Helpful/acoding [INFO] tweaked toml for git repo https://github.com/Mr-Helpful/acoding written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Mr-Helpful/acoding 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/Mr-Helpful/acoding 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] d87b9d6c0e263c815f60a227ee4982482ad2e414d62a7a5cd58fb1a50e464699 [INFO] running `Command { std: "docker" "start" "-a" "d87b9d6c0e263c815f60a227ee4982482ad2e414d62a7a5cd58fb1a50e464699", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d87b9d6c0e263c815f60a227ee4982482ad2e414d62a7a5cd58fb1a50e464699", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d87b9d6c0e263c815f60a227ee4982482ad2e414d62a7a5cd58fb1a50e464699", kill_on_drop: false }` [INFO] [stdout] d87b9d6c0e263c815f60a227ee4982482ad2e414d62a7a5cd58fb1a50e464699 [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] 7fbb8cbd4ada2ac3ad36bd012ed64d1e5a6313d1ba617c37d54f502d3e508365 [INFO] running `Command { std: "docker" "start" "-a" "7fbb8cbd4ada2ac3ad36bd012ed64d1e5a6313d1ba617c37d54f502d3e508365", kill_on_drop: false }` [INFO] [stderr] Compiling rustix v0.38.34 [INFO] [stderr] Checking fastrand v2.1.1 [INFO] [stderr] Checking once_cell v1.19.0 [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Checking unarray v0.1.4 [INFO] [stderr] Checking wait-timeout v0.2.0 [INFO] [stderr] Compiling syn v2.0.76 [INFO] [stderr] Checking rand_xorshift v0.3.0 [INFO] [stderr] Checking bit-set v0.5.3 [INFO] [stderr] Checking tempfile v3.12.0 [INFO] [stderr] Checking rusty-fork v0.3.0 [INFO] [stderr] Compiling zerocopy-derive v0.7.35 [INFO] [stderr] Checking zerocopy v0.7.35 [INFO] [stderr] Checking ppv-lite86 v0.2.20 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking proptest v1.5.0 [INFO] [stderr] Checking compression v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::default` [INFO] [stdout] --> src/arithmetic/test.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::default; [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: `IntoBits`, `IteratorTransforms`, and `Transform` [INFO] [stdout] --> src/arithmetic/test.rs:3:36 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::{test::CompressorTests, IntoBits, IteratorTransforms, Transform}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `FREQ_MAX` is never used [INFO] [stdout] --> src/arithmetic/mod.rs:8:13 [INFO] [stdout] | [INFO] [stdout] 8 | pub const FREQ_MAX: Code = Code::MAX / (CODE_MAX + 1); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `add` and `update` are never used [INFO] [stdout] --> src/arithmetic/frequency.rs:51:10 [INFO] [stdout] | [INFO] [stdout] 49 | impl FreqTable { [INFO] [stdout] | -------------- methods in this implementation [INFO] [stdout] 50 | /// Adds `value` to the frequency of a single `item` [INFO] [stdout] 51 | pub fn add(&mut self, item: u8, value: Code) -> Option<()> { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 62 | pub fn update(&mut self, mut updates: [Code; 256]) -> Option<()> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/arithmetic/encoder.rs:62:19 [INFO] [stdout] | [INFO] [stdout] 62 | return Some(Ok(bit)); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/arithmetic/encoder.rs:71:19 [INFO] [stdout] | [INFO] [stdout] 71 | return Some(Ok(false)); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/arithmetic/encoder.rs:76:19 [INFO] [stdout] | [INFO] [stdout] 76 | return Some(Ok(true)); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/arithmetic/decoder.rs:111:10 [INFO] [stdout] | [INFO] [stdout] 111 | Some(Ok(c)) [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `compression` (lib test) due to 4 previous errors; 4 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: constant `FREQ_MAX` is never used [INFO] [stdout] --> src/arithmetic/mod.rs:8:13 [INFO] [stdout] | [INFO] [stdout] 8 | pub const FREQ_MAX: Code = Code::MAX / (CODE_MAX + 1); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `add` and `update` are never used [INFO] [stdout] --> src/arithmetic/frequency.rs:51:10 [INFO] [stdout] | [INFO] [stdout] 49 | impl FreqTable { [INFO] [stdout] | -------------- methods in this implementation [INFO] [stdout] 50 | /// Adds `value` to the frequency of a single `item` [INFO] [stdout] 51 | pub fn add(&mut self, item: u8, value: Code) -> Option<()> { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 62 | pub fn update(&mut self, mut updates: [Code; 256]) -> Option<()> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/arithmetic/encoder.rs:62:19 [INFO] [stdout] | [INFO] [stdout] 62 | return Some(Ok(bit)); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/arithmetic/encoder.rs:71:19 [INFO] [stdout] | [INFO] [stdout] 71 | return Some(Ok(false)); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/arithmetic/encoder.rs:76:19 [INFO] [stdout] | [INFO] [stdout] 76 | return Some(Ok(true)); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/arithmetic/decoder.rs:111:10 [INFO] [stdout] | [INFO] [stdout] 111 | Some(Ok(c)) [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `compression` (lib) due to 4 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "7fbb8cbd4ada2ac3ad36bd012ed64d1e5a6313d1ba617c37d54f502d3e508365", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7fbb8cbd4ada2ac3ad36bd012ed64d1e5a6313d1ba617c37d54f502d3e508365", kill_on_drop: false }` [INFO] [stdout] 7fbb8cbd4ada2ac3ad36bd012ed64d1e5a6313d1ba617c37d54f502d3e508365