[INFO] cloning repository https://github.com/Pluriscient/Rust-Katas [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Pluriscient/Rust-Katas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPluriscient%2FRust-Katas", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPluriscient%2FRust-Katas'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 88f36812509ae3ec8a88a3571eef05787a73b139 [INFO] checking Pluriscient/Rust-Katas 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%2FPluriscient%2FRust-Katas" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Pluriscient/Rust-Katas [INFO] finished tweaking git repo https://github.com/Pluriscient/Rust-Katas [INFO] tweaked toml for git repo https://github.com/Pluriscient/Rust-Katas written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Pluriscient/Rust-Katas 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/Pluriscient/Rust-Katas 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e881c7640c49d8e1b812de9133ac00a6f2cf7d6e77cb92da2227d25ac82e35ce [INFO] running `Command { std: "docker" "start" "-a" "e881c7640c49d8e1b812de9133ac00a6f2cf7d6e77cb92da2227d25ac82e35ce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e881c7640c49d8e1b812de9133ac00a6f2cf7d6e77cb92da2227d25ac82e35ce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e881c7640c49d8e1b812de9133ac00a6f2cf7d6e77cb92da2227d25ac82e35ce", kill_on_drop: false }` [INFO] [stdout] e881c7640c49d8e1b812de9133ac00a6f2cf7d6e77cb92da2227d25ac82e35ce [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 154a9186ded6ec090043dd4cf6567a79ee1dcec8a8705fe66d21d4a4fc659df3 [INFO] running `Command { std: "docker" "start" "-a" "154a9186ded6ec090043dd4cf6567a79ee1dcec8a8705fe66d21d4a4fc659df3", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.74 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking regex-syntax v0.6.18 [INFO] [stderr] Checking ppv-lite86 v0.2.8 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking number_prefix v0.3.0 [INFO] [stderr] Checking bit-vec v0.6.2 [INFO] [stderr] Checking terminal_size v0.1.13 [INFO] [stderr] Checking termios v0.3.2 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking regex v1.3.9 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking console v0.12.0 [INFO] [stderr] Checking indicatif v0.15.0 [INFO] [stderr] Checking rust_katas v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/probs/four_kyus/morse_advanced.rs:107:9 [INFO] [stdout] | [INFO] [stdout] 107 | use super::*; [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::ptr::null` [INFO] [stdout] --> src/probs/three_kyus/algebraic_factors.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::ptr::null; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ptr::null` [INFO] [stdout] --> src/probs/three_kyus/algebraic_factors.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::ptr::null; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Void> [INFO] [stdout] --> src/probs/three_kyus/algebraic_factors.rs:141:43 [INFO] [stdout] | [INFO] [stdout] 141 | Box::new(|l: Result, ()>| match l { [INFO] [stdout] | ___________________________________________^ [INFO] [stdout] 142 | | Ok(l_content) => Ok(l_content), [INFO] [stdout] 143 | | Err(()) => unreachable!(), [INFO] [stdout] 144 | | }); [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, Void> [INFO] [stdout] --> src/probs/three_kyus/algebraic_factors.rs:142:30 [INFO] [stdout] | [INFO] [stdout] 142 | Ok(l_content) => Ok(l_content), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Void> [INFO] [stdout] --> src/probs/three_kyus/algebraic_factors.rs:146:51 [INFO] [stdout] | [INFO] [stdout] 146 | Box::new(|r: Result, Void>| match r { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_katas` (bin "rust_katas") due to 3 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/probs/magnet_boxes.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | / format!( [INFO] [stdout] 25 | | "Expected value must be near: {:e} but was:{:e}", [INFO] [stdout] 26 | | expected, actual [INFO] [stdout] 27 | | ) [INFO] [stdout] | |_____________^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `assert!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 24 ~ [INFO] [stdout] 25 | "Expected value must be near: {:e} but was:{:e}", [INFO] [stdout] 26 | expected, actual [INFO] [stdout] 27 ~ [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Void> [INFO] [stdout] --> src/probs/three_kyus/algebraic_factors.rs:141:43 [INFO] [stdout] | [INFO] [stdout] 141 | Box::new(|l: Result, ()>| match l { [INFO] [stdout] | ___________________________________________^ [INFO] [stdout] 142 | | Ok(l_content) => Ok(l_content), [INFO] [stdout] 143 | | Err(()) => unreachable!(), [INFO] [stdout] 144 | | }); [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, Void> [INFO] [stdout] --> src/probs/three_kyus/algebraic_factors.rs:142:30 [INFO] [stdout] | [INFO] [stdout] 142 | Ok(l_content) => Ok(l_content), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Void> [INFO] [stdout] --> src/probs/three_kyus/algebraic_factors.rs:146:51 [INFO] [stdout] | [INFO] [stdout] 146 | Box::new(|r: Result, Void>| match r { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_katas` (bin "rust_katas" test) due to 3 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "154a9186ded6ec090043dd4cf6567a79ee1dcec8a8705fe66d21d4a4fc659df3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "154a9186ded6ec090043dd4cf6567a79ee1dcec8a8705fe66d21d4a4fc659df3", kill_on_drop: false }` [INFO] [stdout] 154a9186ded6ec090043dd4cf6567a79ee1dcec8a8705fe66d21d4a4fc659df3