[INFO] fetching crate slit 0.0.2...
[INFO] checking slit-0.0.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate slit 0.0.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate slit 0.0.2
[INFO] finished tweaking crates.io crate slit 0.0.2
[INFO] tweaked toml for crates.io crate slit 0.0.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate slit 0.0.2 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 crates.io crate slit 0.0.2 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] 573ca292f3ad32048e5188613a8184a57332c43879754b215c9d61f17d2ffa63
[INFO] running `Command { std: "docker" "start" "-a" "573ca292f3ad32048e5188613a8184a57332c43879754b215c9d61f17d2ffa63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "573ca292f3ad32048e5188613a8184a57332c43879754b215c9d61f17d2ffa63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "573ca292f3ad32048e5188613a8184a57332c43879754b215c9d61f17d2ffa63", kill_on_drop: false }`
[INFO] [stdout] 573ca292f3ad32048e5188613a8184a57332c43879754b215c9d61f17d2ffa63
[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] 79199102d5301337c1919c4e5df420d3fb8029a302de89fbb9550cc7ea3b9d03
[INFO] running `Command { std: "docker" "start" "-a" "79199102d5301337c1919c4e5df420d3fb8029a302de89fbb9550cc7ea3b9d03", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking tracing-subscriber v0.2.17
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking jacklog v0.0.3
[INFO] [stderr]     Checking slit v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `print_undelimited` is never read
[INFO] [stdout]   --> src/main.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Cli {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 48 |     print_undelimited: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cli` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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<String, Infallible>
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | /     /// Select only these fields; also print any line that contains no
[INFO] [stdout] 36 | |     /// delimiter character, unless the -s option is specified.
[INFO] [stdout] 37 | |     #[structopt(short = "f", long = "fields")]
[INFO] [stdout] 38 | |     include: 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<String, Infallible>
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     /// Exclude only these fields; also print any line that contains no
[INFO] [stdout] 41 | |     /// delimiter character, unless the -s option is specified. Takes precedence
[INFO] [stdout] 42 | |     /// over included fields selected with -f, --fields.
[INFO] [stdout] 43 | |     #[structopt(short = "F", long)]
[INFO] [stdout] 44 | |     exclude: Option<String>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | /     /// Delimiter to use instead of whitespace to split lines on when chunking
[INFO] [stdout] 56 | |     /// them up into fields.
[INFO] [stdout] 57 | |     #[structopt(short, long)]
[INFO] [stdout] 58 | |     delimiter: Option<String>,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | /     /// Delimiter to use when printing the line, instead of the input
[INFO] [stdout] 61 | |     /// delimiter.  Can be useful to transform a separated line into a line
[INFO] [stdout] 62 | |     /// with a new separator.  them up into fields.
[INFO] [stdout] 63 | |     #[structopt(short = "D", long)]
[INFO] [stdout] 64 | |     output_delimiter: Option<String>,
[INFO] [stdout]    | |____________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::path::PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | /     /// Sum the values from a file.
[INFO] [stdout] 72 | |     file: Option<PathBuf>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `print_undelimited` is never read
[INFO] [stdout]   --> src/main.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Cli {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 48 |     print_undelimited: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cli` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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<String, Infallible>
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | /     /// Select only these fields; also print any line that contains no
[INFO] [stdout] 36 | |     /// delimiter character, unless the -s option is specified.
[INFO] [stdout] 37 | |     #[structopt(short = "f", long = "fields")]
[INFO] [stdout] 38 | |     include: 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<String, Infallible>
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     /// Exclude only these fields; also print any line that contains no
[INFO] [stdout] 41 | |     /// delimiter character, unless the -s option is specified. Takes precedence
[INFO] [stdout] 42 | |     /// over included fields selected with -f, --fields.
[INFO] [stdout] 43 | |     #[structopt(short = "F", long)]
[INFO] [stdout] 44 | |     exclude: Option<String>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | /     /// Delimiter to use instead of whitespace to split lines on when chunking
[INFO] [stdout] 56 | |     /// them up into fields.
[INFO] [stdout] 57 | |     #[structopt(short, long)]
[INFO] [stdout] 58 | |     delimiter: Option<String>,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | /     /// Delimiter to use when printing the line, instead of the input
[INFO] [stdout] 61 | |     /// delimiter.  Can be useful to transform a separated line into a line
[INFO] [stdout] 62 | |     /// with a new separator.  them up into fields.
[INFO] [stdout] 63 | |     #[structopt(short = "D", long)]
[INFO] [stdout] 64 | |     output_delimiter: Option<String>,
[INFO] [stdout]    | |____________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | /     /// Sum the values from a file.
[INFO] [stdout] 72 | |     file: Option<PathBuf>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `slit` (bin "slit" test) due to 5 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `slit` (bin "slit") due to 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "79199102d5301337c1919c4e5df420d3fb8029a302de89fbb9550cc7ea3b9d03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79199102d5301337c1919c4e5df420d3fb8029a302de89fbb9550cc7ea3b9d03", kill_on_drop: false }`
[INFO] [stdout] 79199102d5301337c1919c4e5df420d3fb8029a302de89fbb9550cc7ea3b9d03
