[INFO] cloning repository https://github.com/BenHall-7/prickly
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BenHall-7/prickly" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenHall-7%2Fprickly", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenHall-7%2Fprickly'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ecb5b217f45831b7a3d4275ae88f8f5edde35ab
[INFO] checking BenHall-7/prickly 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%2FBenHall-7%2Fprickly" "/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/BenHall-7/prickly
[INFO] finished tweaking git repo https://github.com/BenHall-7/prickly
[INFO] tweaked toml for git repo https://github.com/BenHall-7/prickly written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BenHall-7/prickly 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/BenHall-7/prickly 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] 15dadd3adfd2fdc4873e8ad4b2f0989dc8bd828da40d44c770f7c9d44ba3d976
[INFO] running `Command { std: "docker" "start" "-a" "15dadd3adfd2fdc4873e8ad4b2f0989dc8bd828da40d44c770f7c9d44ba3d976", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15dadd3adfd2fdc4873e8ad4b2f0989dc8bd828da40d44c770f7c9d44ba3d976", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15dadd3adfd2fdc4873e8ad4b2f0989dc8bd828da40d44c770f7c9d44ba3d976", kill_on_drop: false }`
[INFO] [stdout] 15dadd3adfd2fdc4873e8ad4b2f0989dc8bd828da40d44c770f7c9d44ba3d976
[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] c1fb929fcd91eef86fd969e14eb4ac17b42be7b3ba73bf5f8b3dcc6288e49744
[INFO] running `Command { std: "docker" "start" "-a" "c1fb929fcd91eef86fd969e14eb4ac17b42be7b3ba73bf5f8b3dcc6288e49744", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking bimap v0.6.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.20.0
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking tui v0.16.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking tui-components v0.1.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling diff_derive v0.1.2
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking diff-struct v0.3.1
[INFO] [stderr]     Checking hash40 v1.1.0
[INFO] [stderr]     Checking prc-rs v1.4.0
[INFO] [stderr]     Checking prickly v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `prickly` (bin "prickly") due to 1 previous error; 2 warnings emitted
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/error/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 |     CrossTermError(ErrorKind),
[INFO] [stdout]   |     -------------- ^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `AppError` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 6 -     CrossTermError(ErrorKind),
[INFO] [stdout] 6 +     CrossTermError(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: method `next` is never used
[INFO] [stdout]    --> src/components/param.rs:180:8
[INFO] [stdout]     |
[INFO] [stdout]  54 | impl Param {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn next(&self) -> Option<&Param> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/args.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | /     /// The param file to open on startup, if any
[INFO] [stdout] 6 | |     pub file: Option<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] warning: field `0` is never read
[INFO] [stdout]  --> src/error/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 |     CrossTermError(ErrorKind),
[INFO] [stdout]   |     -------------- ^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `AppError` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 6 -     CrossTermError(ErrorKind),
[INFO] [stdout] 6 +     CrossTermError(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next` is never used
[INFO] [stdout]    --> src/components/param.rs:180:8
[INFO] [stdout]     |
[INFO] [stdout]  54 | impl Param {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn next(&self) -> Option<&Param> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/args.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | /     /// The param file to open on startup, if any
[INFO] [stdout] 6 | |     pub file: Option<String>,
[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 `prickly` (bin "prickly" test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c1fb929fcd91eef86fd969e14eb4ac17b42be7b3ba73bf5f8b3dcc6288e49744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1fb929fcd91eef86fd969e14eb4ac17b42be7b3ba73bf5f8b3dcc6288e49744", kill_on_drop: false }`
[INFO] [stdout] c1fb929fcd91eef86fd969e14eb4ac17b42be7b3ba73bf5f8b3dcc6288e49744
