[INFO] cloning repository https://github.com/LiamCoal/rusty-calculator [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LiamCoal/rusty-calculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamCoal%2Frusty-calculator", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamCoal%2Frusty-calculator'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a49cd7e3ecc575725b7d1139d23821bc869f69e0 [INFO] checking LiamCoal/rusty-calculator 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%2FLiamCoal%2Frusty-calculator" "/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/LiamCoal/rusty-calculator [INFO] finished tweaking git repo https://github.com/LiamCoal/rusty-calculator [INFO] tweaked toml for git repo https://github.com/LiamCoal/rusty-calculator written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/LiamCoal/rusty-calculator 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/LiamCoal/rusty-calculator 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] 544ac7e52e0b8a94a1dc09faae4f63777336c3927e1ac9e1f0c6531c680253e2 [INFO] running `Command { std: "docker" "start" "-a" "544ac7e52e0b8a94a1dc09faae4f63777336c3927e1ac9e1f0c6531c680253e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "544ac7e52e0b8a94a1dc09faae4f63777336c3927e1ac9e1f0c6531c680253e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "544ac7e52e0b8a94a1dc09faae4f63777336c3927e1ac9e1f0c6531c680253e2", kill_on_drop: false }` [INFO] [stdout] 544ac7e52e0b8a94a1dc09faae4f63777336c3927e1ac9e1f0c6531c680253e2 [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] bdba8e57efc7bc82b54456ccd091f282596aa02d314c402e6a34a3d259aab27f [INFO] running `Command { std: "docker" "start" "-a" "bdba8e57efc7bc82b54456ccd091f282596aa02d314c402e6a34a3d259aab27f", kill_on_drop: false }` [INFO] [stderr] Compiling nix v0.17.0 [INFO] [stderr] Checking dirs-sys-next v0.1.0 [INFO] [stderr] Checking utf8parse v0.2.0 [INFO] [stderr] Checking unicode-segmentation v1.6.0 [INFO] [stderr] Checking assert_approx_eq v1.1.0 [INFO] [stderr] Checking colored v2.0.0 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking dirs-next v1.0.1 [INFO] [stderr] Checking rustyline v6.2.0 [INFO] [stderr] Checking rusty-calculator v1.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `Write`, `stdin`, and `stdout` [INFO] [stdout] --> src/main.rs:8:15 [INFO] [stdout] | [INFO] [stdout] 8 | use std::io::{stdin, stdout, Write, Read}; [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: `std::borrow::Borrow` [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use std::borrow::Borrow; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Write`, `stdin`, and `stdout` [INFO] [stdout] --> src/main.rs:8:15 [INFO] [stdout] | [INFO] [stdout] 8 | use std::io::{stdin, stdout, Write, Read}; [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: `std::borrow::Borrow` [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use std::borrow::Borrow; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let mut args = args().collect::>(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let mut args = args().collect::>(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | script.read_to_string(&mut file); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [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] 53 | let _ = script.read_to_string(&mut file); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/tokenizer.rs:10:11 [INFO] [stdout] | [INFO] [stdout] 10 | ret = (&*regex1.replace(&*ret, "")).parse().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/tokenizer.rs:11:11 [INFO] [stdout] | [INFO] [stdout] 11 | ret = (&*regex2.replace(&*ret, "")).parse().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/tokenizer.rs:12:11 [INFO] [stdout] | [INFO] [stdout] 12 | ret = (&*regex3.replace_all(&*ret, " ")).parse().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/tokenizer.rs:20:21 [INFO] [stdout] | [INFO] [stdout] 20 | tokens.push(token.parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | script.read_to_string(&mut file); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [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] 53 | let _ = script.read_to_string(&mut file); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/tokenizer.rs:10:11 [INFO] [stdout] | [INFO] [stdout] 10 | ret = (&*regex1.replace(&*ret, "")).parse().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/tokenizer.rs:11:11 [INFO] [stdout] | [INFO] [stdout] 11 | ret = (&*regex2.replace(&*ret, "")).parse().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/tokenizer.rs:12:11 [INFO] [stdout] | [INFO] [stdout] 12 | ret = (&*regex3.replace_all(&*ret, " ")).parse().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/tokenizer.rs:20:21 [INFO] [stdout] | [INFO] [stdout] 20 | tokens.push(token.parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rusty-calculator` (bin "rusty-calculator") due to 4 previous errors; 4 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `rusty-calculator` (bin "rusty-calculator" test) due to 4 previous errors; 4 warnings emitted [INFO] running `Command { std: "docker" "inspect" "bdba8e57efc7bc82b54456ccd091f282596aa02d314c402e6a34a3d259aab27f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bdba8e57efc7bc82b54456ccd091f282596aa02d314c402e6a34a3d259aab27f", kill_on_drop: false }` [INFO] [stdout] bdba8e57efc7bc82b54456ccd091f282596aa02d314c402e6a34a3d259aab27f