[INFO] cloning repository https://github.com/ibuibu/rust-stun
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ibuibu/rust-stun" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fibuibu%2Frust-stun", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fibuibu%2Frust-stun'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18a4861afdb42ed57f61469bd14f56f515f7e1bb
[INFO] checking ibuibu/rust-stun 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%2Fibuibu%2Frust-stun" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ibuibu/rust-stun
[INFO] finished tweaking git repo https://github.com/ibuibu/rust-stun
[INFO] tweaked toml for git repo https://github.com/ibuibu/rust-stun written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ibuibu/rust-stun 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/ibuibu/rust-stun 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] dd209330bf3ef85664a320fd6b15410a723e280db5dbf8a1a308ead833fe27f4
[INFO] running `Command { std: "docker" "start" "-a" "dd209330bf3ef85664a320fd6b15410a723e280db5dbf8a1a308ead833fe27f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd209330bf3ef85664a320fd6b15410a723e280db5dbf8a1a308ead833fe27f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd209330bf3ef85664a320fd6b15410a723e280db5dbf8a1a308ead833fe27f4", kill_on_drop: false }`
[INFO] [stdout] dd209330bf3ef85664a320fd6b15410a723e280db5dbf8a1a308ead833fe27f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4e529adfbcc0b30d51c43f498ccde379004c5431ddbbcecd55add98a600e776d
[INFO] running `Command { std: "docker" "start" "-a" "4e529adfbcc0b30d51c43f498ccde379004c5431ddbbcecd55add98a600e776d", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking socket-programming v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, Vec<u8>>
[INFO] [stdout]    --> src/udp_server.rs:168:40
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let attribute_value: Vec<u8> = attribute[4..].try_into()?;
[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<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/udp_server.rs:168:40
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let attribute_value: Vec<u8> = attribute[4..].try_into()?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `socket-programming` (bin "socket-programming" test) 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: ControlFlow<Result<Infallible, Infallible>, Vec<u8>>
[INFO] [stdout]    --> src/udp_server.rs:168:40
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let attribute_value: Vec<u8> = attribute[4..].try_into()?;
[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<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/udp_server.rs:168:40
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let attribute_value: Vec<u8> = attribute[4..].try_into()?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `socket-programming` (bin "socket-programming") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4e529adfbcc0b30d51c43f498ccde379004c5431ddbbcecd55add98a600e776d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e529adfbcc0b30d51c43f498ccde379004c5431ddbbcecd55add98a600e776d", kill_on_drop: false }`
[INFO] [stdout] 4e529adfbcc0b30d51c43f498ccde379004c5431ddbbcecd55add98a600e776d