[INFO] cloning repository https://github.com/bayedieng/bayenet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bayedieng/bayenet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbayedieng%2Fbayenet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbayedieng%2Fbayenet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f722ec3c53456e09cc8a4c32fca343994234f1b
[INFO] checking bayedieng/bayenet 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%2Fbayedieng%2Fbayenet" "/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/bayedieng/bayenet
[INFO] finished tweaking git repo https://github.com/bayedieng/bayenet
[INFO] tweaked toml for git repo https://github.com/bayedieng/bayenet written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bayedieng/bayenet 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/bayedieng/bayenet 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] 0ee01c86c2447bfef6665dfab803ae4cfce36e54e5ea58d5cf5df982671e77a2
[INFO] running `Command { std: "docker" "start" "-a" "0ee01c86c2447bfef6665dfab803ae4cfce36e54e5ea58d5cf5df982671e77a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ee01c86c2447bfef6665dfab803ae4cfce36e54e5ea58d5cf5df982671e77a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ee01c86c2447bfef6665dfab803ae4cfce36e54e5ea58d5cf5df982671e77a2", kill_on_drop: false }`
[INFO] [stdout] 0ee01c86c2447bfef6665dfab803ae4cfce36e54e5ea58d5cf5df982671e77a2
[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] 529a7e0c18c43ee293e0468ed0907aabf16680517fce28052e9f807ce4239621
[INFO] running `Command { std: "docker" "start" "-a" "529a7e0c18c43ee293e0468ed0907aabf16680517fce28052e9f807ce4239621", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling cc v1.2.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling tun-tap v0.1.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]     Checking bayenet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `dest_mac_address`, `source_mac_address`, and `ether_type` are never read
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct EthernetHeader {
[INFO] [stdout]    |        -------------- fields in this struct
[INFO] [stdout] 25 |     dest_mac_address: [u8; 6],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 26 |     source_mac_address: [u8; 6],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 27 |     ether_type: EtherType,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EthernetHeader` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `version`, `header_length`, `protocol`, `checksum`, `source_address`, and `destination_address` are never read
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct IpV4Header {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 44 |     version: u8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 45 |     pub header_length: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 46 |     protocol: u8,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 47 |     checksum: u16,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 48 |     source_address: [u8; 4],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 49 |     destination_address: [u8; 4],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IpV4Header` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UdpHeader` is never constructed
[INFO] [stdout]   --> src/main.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | struct UdpHeader {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_ethernet_payload` is never used
[INFO] [stdout]   --> src/main.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl UdpHeader {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 83 |     pub fn from_ethernet_payload(payload: &[u8]) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/main.rs:127:53
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let eth_header = EthernetHeader::from_bytes(buffer[4..packet_length].try_into().unwrap());
[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 `bayenet` (bin "bayenet") due to 1 previous error; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: fields `dest_mac_address`, `source_mac_address`, and `ether_type` are never read
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct EthernetHeader {
[INFO] [stdout]    |        -------------- fields in this struct
[INFO] [stdout] 25 |     dest_mac_address: [u8; 6],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 26 |     source_mac_address: [u8; 6],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 27 |     ether_type: EtherType,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EthernetHeader` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `version`, `header_length`, `protocol`, `checksum`, `source_address`, and `destination_address` are never read
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct IpV4Header {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 44 |     version: u8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 45 |     pub header_length: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 46 |     protocol: u8,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 47 |     checksum: u16,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 48 |     source_address: [u8; 4],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 49 |     destination_address: [u8; 4],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IpV4Header` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UdpHeader` is never constructed
[INFO] [stdout]   --> src/main.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | struct UdpHeader {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_ethernet_payload` is never used
[INFO] [stdout]   --> src/main.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl UdpHeader {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 83 |     pub fn from_ethernet_payload(payload: &[u8]) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/main.rs:127:53
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let eth_header = EthernetHeader::from_bytes(buffer[4..packet_length].try_into().unwrap());
[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 `bayenet` (bin "bayenet" test) due to 1 previous error; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "529a7e0c18c43ee293e0468ed0907aabf16680517fce28052e9f807ce4239621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "529a7e0c18c43ee293e0468ed0907aabf16680517fce28052e9f807ce4239621", kill_on_drop: false }`
[INFO] [stdout] 529a7e0c18c43ee293e0468ed0907aabf16680517fce28052e9f807ce4239621
