[INFO] cloning repository https://github.com/jorgehermo9/mrmr-enhanced
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jorgehermo9/mrmr-enhanced" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjorgehermo9%2Fmrmr-enhanced", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjorgehermo9%2Fmrmr-enhanced'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d995ec5ea41995a55ea6befb2e52890462ebae6
[INFO] checking jorgehermo9/mrmr-enhanced 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%2Fjorgehermo9%2Fmrmr-enhanced" "/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/jorgehermo9/mrmr-enhanced
[INFO] finished tweaking git repo https://github.com/jorgehermo9/mrmr-enhanced
[INFO] tweaked toml for git repo https://github.com/jorgehermo9/mrmr-enhanced written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jorgehermo9/mrmr-enhanced 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/jorgehermo9/mrmr-enhanced 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] 49ea202b9f977732b1e2fd96c5d8d1b2c7d2ef1750bffca81dfc0b0f1f6f5452
[INFO] running `Command { std: "docker" "start" "-a" "49ea202b9f977732b1e2fd96c5d8d1b2c7d2ef1750bffca81dfc0b0f1f6f5452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49ea202b9f977732b1e2fd96c5d8d1b2c7d2ef1750bffca81dfc0b0f1f6f5452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49ea202b9f977732b1e2fd96c5d8d1b2c7d2ef1750bffca81dfc0b0f1f6f5452", kill_on_drop: false }`
[INFO] [stdout] 49ea202b9f977732b1e2fd96c5d8d1b2c7d2ef1750bffca81dfc0b0f1f6f5452
[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] 271139c2b9258e04d66597930fd099b746f48679137dd999334562e00d7ef4fd
[INFO] running `Command { std: "docker" "start" "-a" "271139c2b9258e04d66597930fd099b746f48679137dd999334562e00d7ef4fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling crossbeam-utils v0.8.9
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling semver v1.0.10
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking bytemuck v1.9.1
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.9
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling serde_json v1.0.80
[INFO] [stderr]     Checking safe_arch v0.6.0
[INFO] [stderr]    Compiling indexmap v1.9.0
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]     Checking wide v0.7.4
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking clap_lex v0.2.2
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking crossbeam-channel v0.5.5
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]    Compiling clap_derive v3.2.5
[INFO] [stderr]     Checking clap v3.2.5
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking k2_tree v0.5.3
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking simba v0.7.1
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]     Checking nalgebra v0.31.0
[INFO] [stderr]     Checking nalgebra-sparse v0.7.0
[INFO] [stderr]     Checking fed-mrmr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         path: Option<PathBuf>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fed-mrmr` (bin "fed-mrmr" test) due to 7 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         class: String,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         path: Option<PathBuf>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         output: PathBuf,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         datasets: Vec<PathBuf>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         output: PathBuf,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         path: Option<PathBuf>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         path: Option<PathBuf>,
[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<std::string::String, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         class: String,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         path: Option<PathBuf>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         output: PathBuf,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         datasets: Vec<PathBuf>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         output: PathBuf,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         path: Option<PathBuf>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fed-mrmr` (bin "fed-mrmr") due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "271139c2b9258e04d66597930fd099b746f48679137dd999334562e00d7ef4fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "271139c2b9258e04d66597930fd099b746f48679137dd999334562e00d7ef4fd", kill_on_drop: false }`
[INFO] [stdout] 271139c2b9258e04d66597930fd099b746f48679137dd999334562e00d7ef4fd
