[INFO] cloning repository https://github.com/JustAGod1/c-labs-tester [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JustAGod1/c-labs-tester" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJustAGod1%2Fc-labs-tester", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJustAGod1%2Fc-labs-tester'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cf8523735c1693ffedfb4c294f2da92de5e1298d [INFO] checking JustAGod1/c-labs-tester 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%2FJustAGod1%2Fc-labs-tester" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/JustAGod1/c-labs-tester [INFO] finished tweaking git repo https://github.com/JustAGod1/c-labs-tester [INFO] tweaked toml for git repo https://github.com/JustAGod1/c-labs-tester written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/JustAGod1/c-labs-tester 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/JustAGod1/c-labs-tester 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c7d44e095bacf8d3e990f4d6ae20bbfb688b8a9ae14806465fd79b1a0b9121ea [INFO] running `Command { std: "docker" "start" "-a" "c7d44e095bacf8d3e990f4d6ae20bbfb688b8a9ae14806465fd79b1a0b9121ea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c7d44e095bacf8d3e990f4d6ae20bbfb688b8a9ae14806465fd79b1a0b9121ea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c7d44e095bacf8d3e990f4d6ae20bbfb688b8a9ae14806465fd79b1a0b9121ea", kill_on_drop: false }` [INFO] [stdout] c7d44e095bacf8d3e990f4d6ae20bbfb688b8a9ae14806465fd79b1a0b9121ea [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] edd2b7f13d273eb0064719d2ccf818fd290c870adbcca96ce1ffcef2c95cb9da [INFO] running `Command { std: "docker" "start" "-a" "edd2b7f13d273eb0064719d2ccf818fd290c870adbcca96ce1ffcef2c95cb9da", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.119 [INFO] [stderr] Compiling generic-array v0.14.5 [INFO] [stderr] Compiling syn v1.0.86 [INFO] [stderr] Compiling indexmap v1.8.0 [INFO] [stderr] Compiling quote v1.0.15 [INFO] [stderr] Checking os_str_bytes v6.0.0 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking crypto-common v0.1.3 [INFO] [stderr] Checking block-buffer v0.10.2 [INFO] [stderr] Checking digest v0.10.3 [INFO] [stderr] Checking getrandom v0.2.5 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking sha2 v0.10.2 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling clap_derive v3.1.4 [INFO] [stderr] Checking clap v3.1.5 [INFO] [stderr] Checking c-lab-tester v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `Answer` and `Matrix` [INFO] [stdout] --> src/main.rs:1:33 [INFO] [stdout] | [INFO] [stdout] 1 | use crate::slae::{SLAESupplier, Answer, Matrix}; [INFO] [stdout] | ^^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `FailedTest` [INFO] [stdout] --> src/main.rs:2:45 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::base::test_runner::{TestsRunner, FailedTest}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Stdin` [INFO] [stdout] --> src/base/runner.rs:2:21 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Read, Stdin, Write, ErrorKind}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::marker::PhantomData` [INFO] [stdout] --> src/base/runner.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::marker::PhantomData; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Answer` and `Matrix` [INFO] [stdout] --> src/main.rs:1:33 [INFO] [stdout] | [INFO] [stdout] 1 | use crate::slae::{SLAESupplier, Answer, Matrix}; [INFO] [stdout] | ^^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `FailedTest` [INFO] [stdout] --> src/main.rs:2:45 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::base::test_runner::{TestsRunner, FailedTest}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Stdin` [INFO] [stdout] --> src/base/runner.rs:2:21 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Read, Stdin, Write, ErrorKind}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::marker::PhantomData` [INFO] [stdout] --> src/base/runner.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::marker::PhantomData; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::convert::TryFrom` [INFO] [stdout] --> src/base/runner.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::convert::TryFrom; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/slae/mod.rs:339:13 [INFO] [stdout] | [INFO] [stdout] 339 | for i in 0..num { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::convert::TryFrom` [INFO] [stdout] --> src/base/runner.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::convert::TryFrom; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `swap_rows` is never used [INFO] [stdout] --> src/slae/mod.rs:61:12 [INFO] [stdout] | [INFO] [stdout] 21 | impl Matrix { [INFO] [stdout] | ----------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 61 | pub fn swap_rows(&mut self, a: i32, b: i32) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | / /// Name of lab you want to test. Options: slae [INFO] [stdout] 19 | | #[clap(long)] [INFO] [stdout] 20 | | lab: String, [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/main.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | / /// Seed to tune random generator [INFO] [stdout] 23 | | #[clap(long, default_value="qwerty")] [INFO] [stdout] 24 | | seed: String [INFO] [stdout] | |________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 35 | &mut seed[..].copy_from_slice(&hasher.finalize()[..]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 35 | let _ = &mut seed[..].copy_from_slice(&hasher.finalize()[..]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/base/runner.rs:72:13 [INFO] [stdout] | [INFO] [stdout] 72 | &buf[0..read].iter().for_each(|a| output.push(*a)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 72 | let _ = &buf[0..read].iter().for_each(|a| output.push(*a)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/slae/mod.rs:289:9 [INFO] [stdout] | [INFO] [stdout] 289 | matrix.sum_rows(a, b, factor); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 289 | let _ = matrix.sum_rows(a, b, factor); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/slae/mod.rs:339:13 [INFO] [stdout] | [INFO] [stdout] 339 | for i in 0..num { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `c-lab-tester` (bin "c-lab-tester" test) due to 2 previous errors; 10 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: method `swap_rows` is never used [INFO] [stdout] --> src/slae/mod.rs:61:12 [INFO] [stdout] | [INFO] [stdout] 21 | impl Matrix { [INFO] [stdout] | ----------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 61 | pub fn swap_rows(&mut self, a: i32, b: i32) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | / /// Name of lab you want to test. Options: slae [INFO] [stdout] 19 | | #[clap(long)] [INFO] [stdout] 20 | | lab: String, [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/main.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | / /// Seed to tune random generator [INFO] [stdout] 23 | | #[clap(long, default_value="qwerty")] [INFO] [stdout] 24 | | seed: String [INFO] [stdout] | |________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 35 | &mut seed[..].copy_from_slice(&hasher.finalize()[..]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 35 | let _ = &mut seed[..].copy_from_slice(&hasher.finalize()[..]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/base/runner.rs:72:13 [INFO] [stdout] | [INFO] [stdout] 72 | &buf[0..read].iter().for_each(|a| output.push(*a)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 72 | let _ = &buf[0..read].iter().for_each(|a| output.push(*a)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/slae/mod.rs:289:9 [INFO] [stdout] | [INFO] [stdout] 289 | matrix.sum_rows(a, b, factor); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 289 | let _ = matrix.sum_rows(a, b, factor); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `c-lab-tester` (bin "c-lab-tester") due to 2 previous errors; 10 warnings emitted [INFO] running `Command { std: "docker" "inspect" "edd2b7f13d273eb0064719d2ccf818fd290c870adbcca96ce1ffcef2c95cb9da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "edd2b7f13d273eb0064719d2ccf818fd290c870adbcca96ce1ffcef2c95cb9da", kill_on_drop: false }` [INFO] [stdout] edd2b7f13d273eb0064719d2ccf818fd290c870adbcca96ce1ffcef2c95cb9da