[INFO] cloning repository https://github.com/Trivernis/ledstrip-vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Trivernis/ledstrip-vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrivernis%2Fledstrip-vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrivernis%2Fledstrip-vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 444d1b81ba661909e59de20334f220a02f5af5a7
[INFO] checking Trivernis/ledstrip-vm 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%2FTrivernis%2Fledstrip-vm" "/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/Trivernis/ledstrip-vm
[INFO] finished tweaking git repo https://github.com/Trivernis/ledstrip-vm
[INFO] tweaked toml for git repo https://github.com/Trivernis/ledstrip-vm written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Trivernis/ledstrip-vm 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/Trivernis/ledstrip-vm 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] ea1aa55facebfd612fda50b38ba83192c7ff5d7c94375d2a3314c3b88b2dabad
[INFO] running `Command { std: "docker" "start" "-a" "ea1aa55facebfd612fda50b38ba83192c7ff5d7c94375d2a3314c3b88b2dabad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea1aa55facebfd612fda50b38ba83192c7ff5d7c94375d2a3314c3b88b2dabad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea1aa55facebfd612fda50b38ba83192c7ff5d7c94375d2a3314c3b88b2dabad", kill_on_drop: false }`
[INFO] [stdout] ea1aa55facebfd612fda50b38ba83192c7ff5d7c94375d2a3314c3b88b2dabad
[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] bd958eadaa049a76ac8b0d4440f4d6443fa220e3a11049df23d81773d5e385f2
[INFO] running `Command { std: "docker" "start" "-a" "bd958eadaa049a76ac8b0d4440f4d6443fa220e3a11049df23d81773d5e385f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]     Checking ledstrip_vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/ledstrip_controller.rs:93:24
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut data = data.clone().to_vec();
[INFO] [stdout]    |                        ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/ledstrip_controller.rs:93:24
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut data = data.clone().to_vec();
[INFO] [stdout]    |                        ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/lsambler.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | /     #[structopt(short = "i", name = "input")]
[INFO] [stdout] 23 | |     input_file: 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/bin/lsambler.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | /     #[structopt(short = "o", name = "output")]
[INFO] [stdout] 26 | |     output_file: String,
[INFO] [stdout]    | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ledstrip_vm` (bin "lsambler") due to 2 previous errors
[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]   --> src/bin/lsvm.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     #[structopt(short = "i", name = "input")]
[INFO] [stdout] 13 | |     input_file: 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/bin/lsvm.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     #[structopt(short = "a", name = "address")]
[INFO] [stdout] 16 | |     ip: String,
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ledstrip_vm` (bin "lsvm") due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/lsambler.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | /     #[structopt(short = "i", name = "input")]
[INFO] [stdout] 23 | |     input_file: 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/bin/lsambler.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | /     #[structopt(short = "o", name = "output")]
[INFO] [stdout] 26 | |     output_file: 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/lsvm.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     #[structopt(short = "i", name = "input")]
[INFO] [stdout] 13 | |     input_file: 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/bin/lsvm.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     #[structopt(short = "a", name = "address")]
[INFO] [stdout] 16 | |     ip: String,
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ledstrip_vm` (bin "lsambler" test) due to 2 previous errors
[INFO] [stderr] error: could not compile `ledstrip_vm` (bin "lsvm" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bd958eadaa049a76ac8b0d4440f4d6443fa220e3a11049df23d81773d5e385f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd958eadaa049a76ac8b0d4440f4d6443fa220e3a11049df23d81773d5e385f2", kill_on_drop: false }`
[INFO] [stdout] bd958eadaa049a76ac8b0d4440f4d6443fa220e3a11049df23d81773d5e385f2