[INFO] cloning repository https://github.com/kaifastromai/cs-os-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kaifastromai/cs-os-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaifastromai%2Fcs-os-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaifastromai%2Fcs-os-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8d4e8a3b7d65a25289f0f3f9ea63b7f6bdb62df7 [INFO] checking kaifastromai/cs-os-rust 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%2Fkaifastromai%2Fcs-os-rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/kaifastromai/cs-os-rust [INFO] finished tweaking git repo https://github.com/kaifastromai/cs-os-rust [INFO] tweaked toml for git repo https://github.com/kaifastromai/cs-os-rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/kaifastromai/cs-os-rust 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/kaifastromai/cs-os-rust 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 54c7cf9d524ff2702da8519dbb277c54417a04c88ed5dd3e24492f25a41d4fc6 [INFO] running `Command { std: "docker" "start" "-a" "54c7cf9d524ff2702da8519dbb277c54417a04c88ed5dd3e24492f25a41d4fc6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "54c7cf9d524ff2702da8519dbb277c54417a04c88ed5dd3e24492f25a41d4fc6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "54c7cf9d524ff2702da8519dbb277c54417a04c88ed5dd3e24492f25a41d4fc6", kill_on_drop: false }` [INFO] [stdout] 54c7cf9d524ff2702da8519dbb277c54417a04c88ed5dd3e24492f25a41d4fc6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] e1a43f82eb34c3d3238df13cac26187cf6ed96643bfade236c06c44f208dac0d [INFO] running `Command { std: "docker" "start" "-a" "e1a43f82eb34c3d3238df13cac26187cf6ed96643bfade236c06c44f208dac0d", kill_on_drop: false }` [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling libc v0.2.77 [INFO] [stderr] Compiling nix v0.18.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking cs-operating-systems v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `CStr` [INFO] [stdout] --> src/main.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use ffi::{CStr, CString}; [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: `unistd::chdir` [INFO] [stdout] --> src/main.rs:5:42 [INFO] [stdout] | [INFO] [stdout] 5 | use nix::{fcntl::OFlag, sys::stat::Mode, unistd::chdir}; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `sys::wait::WaitPidFlag` and `unistd::close` [INFO] [stdout] --> src/main.rs:6:11 [INFO] [stdout] | [INFO] [stdout] 6 | use nix::{sys::wait::WaitPidFlag, sys::wait::WaitStatus, unistd::close}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `io::BufRead` [INFO] [stdout] --> src/main.rs:9:16 [INFO] [stdout] | [INFO] [stdout] 9 | use std::{ffi, io::BufRead}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> src/main.rs:146:16 [INFO] [stdout] | [INFO] [stdout] 146 | if (matches.opt_present("exec2")) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 146 - if (matches.opt_present("exec2")) { [INFO] [stdout] 146 + if matches.opt_present("exec2") { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:164:22 [INFO] [stdout] | [INFO] [stdout] 160 | / nix::unistd::execvp( [INFO] [stdout] 161 | | &CString::new(args.exec1.clone()).unwrap(), [INFO] [stdout] 162 | | &[&CString::new(args.exec1).unwrap()], [INFO] [stdout] 163 | | ) [INFO] [stdout] 164 | | .unwrap(); [INFO] [stdout] | | -^ unreachable expression [INFO] [stdout] | |_____________________| [INFO] [stdout] | any code following this expression is unreachable [INFO] [stdout] | [INFO] [stdout] note: this expression has type `Infallible`, which is uninhabited [INFO] [stdout] --> src/main.rs:160:13 [INFO] [stdout] | [INFO] [stdout] 160 | / nix::unistd::execvp( [INFO] [stdout] 161 | | &CString::new(args.exec1.clone()).unwrap(), [INFO] [stdout] 162 | | &[&CString::new(args.exec1).unwrap()], [INFO] [stdout] 163 | | ) [INFO] [stdout] 164 | | .unwrap(); [INFO] [stdout] | |_____________________^ [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `prog` [INFO] [stdout] --> src/main.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let prog = env_args[0].clone(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_prog` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `DEV` is never used [INFO] [stdout] --> src/main.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | static DEV: bool = true; [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:78:33 [INFO] [stdout] | [INFO] [stdout] 78 | args.outfile_type = String::from_str("o").unwrap(); [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:85:33 [INFO] [stdout] | [INFO] [stdout] 85 | args.outfile_type = String::from_str("a").unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `CStr` [INFO] [stdout] --> src/main.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use ffi::{CStr, CString}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `cs-operating-systems` (bin "cs-operating-systems") due to 2 previous errors; 8 warnings emitted [INFO] [stdout] warning: unused import: `unistd::chdir` [INFO] [stdout] --> src/main.rs:5:42 [INFO] [stdout] | [INFO] [stdout] 5 | use nix::{fcntl::OFlag, sys::stat::Mode, unistd::chdir}; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused imports: `sys::wait::WaitPidFlag` and `unistd::close` [INFO] [stdout] --> src/main.rs:6:11 [INFO] [stdout] | [INFO] [stdout] 6 | use nix::{sys::wait::WaitPidFlag, sys::wait::WaitStatus, unistd::close}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `io::BufRead` [INFO] [stdout] --> src/main.rs:9:16 [INFO] [stdout] | [INFO] [stdout] 9 | use std::{ffi, io::BufRead}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> src/main.rs:146:16 [INFO] [stdout] | [INFO] [stdout] 146 | if (matches.opt_present("exec2")) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 146 - if (matches.opt_present("exec2")) { [INFO] [stdout] 146 + if matches.opt_present("exec2") { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:164:22 [INFO] [stdout] | [INFO] [stdout] 160 | / nix::unistd::execvp( [INFO] [stdout] 161 | | &CString::new(args.exec1.clone()).unwrap(), [INFO] [stdout] 162 | | &[&CString::new(args.exec1).unwrap()], [INFO] [stdout] 163 | | ) [INFO] [stdout] 164 | | .unwrap(); [INFO] [stdout] | | -^ unreachable expression [INFO] [stdout] | |_____________________| [INFO] [stdout] | any code following this expression is unreachable [INFO] [stdout] | [INFO] [stdout] note: this expression has type `Infallible`, which is uninhabited [INFO] [stdout] --> src/main.rs:160:13 [INFO] [stdout] | [INFO] [stdout] 160 | / nix::unistd::execvp( [INFO] [stdout] 161 | | &CString::new(args.exec1.clone()).unwrap(), [INFO] [stdout] 162 | | &[&CString::new(args.exec1).unwrap()], [INFO] [stdout] 163 | | ) [INFO] [stdout] 164 | | .unwrap(); [INFO] [stdout] | |_____________________^ [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `prog` [INFO] [stdout] --> src/main.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let prog = env_args[0].clone(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_prog` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `DEV` is never used [INFO] [stdout] --> src/main.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | static DEV: bool = true; [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:78:33 [INFO] [stdout] | [INFO] [stdout] 78 | args.outfile_type = String::from_str("o").unwrap(); [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:85:33 [INFO] [stdout] | [INFO] [stdout] 85 | args.outfile_type = String::from_str("a").unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `cs-operating-systems` (bin "cs-operating-systems" test) due to 2 previous errors; 8 warnings emitted [INFO] running `Command { std: "docker" "inspect" "e1a43f82eb34c3d3238df13cac26187cf6ed96643bfade236c06c44f208dac0d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e1a43f82eb34c3d3238df13cac26187cf6ed96643bfade236c06c44f208dac0d", kill_on_drop: false }` [INFO] [stdout] e1a43f82eb34c3d3238df13cac26187cf6ed96643bfade236c06c44f208dac0d