[INFO] cloning repository https://github.com/illumination-k/sequtils
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/illumination-k/sequtils" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillumination-k%2Fsequtils", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillumination-k%2Fsequtils'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf37108d21e5da420e1e408e442bd1a45387565d
[INFO] checking illumination-k/sequtils 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%2Fillumination-k%2Fsequtils" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/illumination-k/sequtils
[INFO] finished tweaking git repo https://github.com/illumination-k/sequtils
[INFO] tweaked toml for git repo https://github.com/illumination-k/sequtils written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/illumination-k/sequtils 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/illumination-k/sequtils 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 052bc878a2745382bc39eb77314e417a2ca86e78c0e3f048194ca00873a5a449
[INFO] running `Command { std: "docker" "start" "-a" "052bc878a2745382bc39eb77314e417a2ca86e78c0e3f048194ca00873a5a449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "052bc878a2745382bc39eb77314e417a2ca86e78c0e3f048194ca00873a5a449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "052bc878a2745382bc39eb77314e417a2ca86e78c0e3f048194ca00873a5a449", kill_on_drop: false }`
[INFO] [stdout] 052bc878a2745382bc39eb77314e417a2ca86e78c0e3f048194ca00873a5a449
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 1180f8c40b3daf5308cda1cd5849daa63d1d83aeb64c8eefb78f42e0bf0ac64f
[INFO] running `Command { std: "docker" "start" "-a" "1180f8c40b3daf5308cda1cd5849daa63d1d83aeb64c8eefb78f42e0bf0ac64f", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking anyhow v1.0.56
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking sequtils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/exbc.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     #[structopt(long = "read1", short="1")]
[INFO] [stdout] 15 | |     pub read1: 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<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/exbc.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(long = "read2", short="2")]
[INFO] [stdout] 17 | |     pub read2: PathBuf,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/exbc.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     #[structopt(long = "outprefix", short = "o")]
[INFO] [stdout] 19 | |     pub out: 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/bin/exbc.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     #[structopt(long = "regex")]
[INFO] [stdout] 21 | |     pub regex: 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/exbc.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     #[structopt(long = "read1", short="1")]
[INFO] [stdout] 15 | |     pub read1: 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<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/exbc.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(long = "read2", short="2")]
[INFO] [stdout] 17 | |     pub read2: PathBuf,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/exbc.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     #[structopt(long = "outprefix", short = "o")]
[INFO] [stdout] 19 | |     pub out: 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/bin/exbc.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     #[structopt(long = "regex")]
[INFO] [stdout] 21 | |     pub regex: String
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sequtils` (bin "exbc") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `sequtils` (bin "exbc" test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "1180f8c40b3daf5308cda1cd5849daa63d1d83aeb64c8eefb78f42e0bf0ac64f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1180f8c40b3daf5308cda1cd5849daa63d1d83aeb64c8eefb78f42e0bf0ac64f", kill_on_drop: false }`
[INFO] [stdout] 1180f8c40b3daf5308cda1cd5849daa63d1d83aeb64c8eefb78f42e0bf0ac64f