[INFO] cloning repository https://github.com/RetricSu/lgrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RetricSu/lgrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRetricSu%2Flgrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRetricSu%2Flgrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ebab5754e98f271085fa378e8251cc4c443e957
[INFO] checking RetricSu/lgrep 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%2FRetricSu%2Flgrep" "/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/RetricSu/lgrep
[INFO] finished tweaking git repo https://github.com/RetricSu/lgrep
[INFO] tweaked toml for git repo https://github.com/RetricSu/lgrep written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/RetricSu/lgrep 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/RetricSu/lgrep 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] 5c105538146e08e49689d486ee70916656ff817a682195d9b6314361247101e4
[INFO] running `Command { std: "docker" "start" "-a" "5c105538146e08e49689d486ee70916656ff817a682195d9b6314361247101e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c105538146e08e49689d486ee70916656ff817a682195d9b6314361247101e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c105538146e08e49689d486ee70916656ff817a682195d9b6314361247101e4", kill_on_drop: false }`
[INFO] [stdout] 5c105538146e08e49689d486ee70916656ff817a682195d9b6314361247101e4
[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] d572ffab5fee2002883117be2fdb3793d165383821cd5a850fde179b640925cf
[INFO] running `Command { std: "docker" "start" "-a" "d572ffab5fee2002883117be2fdb3793d165383821cd5a850fde179b640925cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking bm-search v0.1.0 (/opt/rustwide/workdir/crates/bm-search)
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking lgrep v0.1.0 (/opt/rustwide/workdir/crates/lgrep)
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> crates/lgrep/src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> crates/lgrep/src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> crates/lgrep/src/lib/metadata.rs:41:19
[INFO] [stdout]    |
[INFO] [stdout] 41 |           let pre = env!("CARGO_PKG_VERSION_PRE")
[INFO] [stdout]    |  ___________________^
[INFO] [stdout] 42 | |             .parse::<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]   --> crates/lgrep/src/lib/metadata.rs:55:20
[INFO] [stdout]    |
[INFO] [stdout] 55 |           let name = env!("CARGO_PKG_NAME")
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 56 | |             .parse::<String>()
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> crates/lgrep/src/lib/metadata.rs:59:22
[INFO] [stdout]    |
[INFO] [stdout] 59 |           let author = env!("CARGO_PKG_AUTHORS")
[INFO] [stdout]    |  ______________________^
[INFO] [stdout] 60 | |             .parse::<String>()
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> crates/lgrep/src/lib/metadata.rs:63:27
[INFO] [stdout]    |
[INFO] [stdout] 63 |           let description = env!("CARGO_PKG_DESCRIPTION")
[INFO] [stdout]    |  ___________________________^
[INFO] [stdout] 64 | |             .parse::<String>()
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lgrep` (bin "lgrep" test) due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> crates/lgrep/src/lib/metadata.rs:41:19
[INFO] [stdout]    |
[INFO] [stdout] 41 |           let pre = env!("CARGO_PKG_VERSION_PRE")
[INFO] [stdout]    |  ___________________^
[INFO] [stdout] 42 | |             .parse::<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]   --> crates/lgrep/src/lib/metadata.rs:55:20
[INFO] [stdout]    |
[INFO] [stdout] 55 |           let name = env!("CARGO_PKG_NAME")
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 56 | |             .parse::<String>()
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> crates/lgrep/src/lib/metadata.rs:59:22
[INFO] [stdout]    |
[INFO] [stdout] 59 |           let author = env!("CARGO_PKG_AUTHORS")
[INFO] [stdout]    |  ______________________^
[INFO] [stdout] 60 | |             .parse::<String>()
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> crates/lgrep/src/lib/metadata.rs:63:27
[INFO] [stdout]    |
[INFO] [stdout] 63 |           let description = env!("CARGO_PKG_DESCRIPTION")
[INFO] [stdout]    |  ___________________________^
[INFO] [stdout] 64 | |             .parse::<String>()
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lgrep` (bin "lgrep") due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "d572ffab5fee2002883117be2fdb3793d165383821cd5a850fde179b640925cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d572ffab5fee2002883117be2fdb3793d165383821cd5a850fde179b640925cf", kill_on_drop: false }`
[INFO] [stdout] d572ffab5fee2002883117be2fdb3793d165383821cd5a850fde179b640925cf
