[INFO] cloning repository https://github.com/dd-ix/sflow_exporter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dd-ix/sflow_exporter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdd-ix%2Fsflow_exporter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdd-ix%2Fsflow_exporter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aafbde13e78ff9b85f8f540cc6060ef157c8c110
[INFO] checking dd-ix/sflow_exporter against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdd-ix%2Fsflow_exporter" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dd-ix/sflow_exporter on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dd-ix/sflow_exporter
[INFO] finished tweaking git repo https://github.com/dd-ix/sflow_exporter
[INFO] tweaked toml for git repo https://github.com/dd-ix/sflow_exporter written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dd-ix/sflow_exporter 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded binrw_derive v0.13.3
[INFO] [stderr]   Downloaded binrw v0.13.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d909aa91b5c63dbe2d1b7d2fff36787ff8c29e68ef2c4fe48fd60b8e60676971
[INFO] running `Command { std: "docker" "start" "-a" "d909aa91b5c63dbe2d1b7d2fff36787ff8c29e68ef2c4fe48fd60b8e60676971", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d909aa91b5c63dbe2d1b7d2fff36787ff8c29e68ef2c4fe48fd60b8e60676971", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d909aa91b5c63dbe2d1b7d2fff36787ff8c29e68ef2c4fe48fd60b8e60676971", kill_on_drop: false }`
[INFO] [stdout] d909aa91b5c63dbe2d1b7d2fff36787ff8c29e68ef2c4fe48fd60b8e60676971
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1fe6e4581dc4714eca152b60082e1145110e3085810e47b381bade0fd95ea88
[INFO] running `Command { std: "docker" "start" "-a" "f1fe6e4581dc4714eca152b60082e1145110e3085810e47b381bade0fd95ea88", kill_on_drop: false }`
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[INFO] [stdout] warning: fields `version`, `sub_agent_id`, `seq_num`, `uptime`, and `sample_count` are never read
[INFO] [stdout]   --> src/sflow/mod.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub(crate) struct SflowDatagram {
[INFO] [stdout]    |                   ------------- fields in this struct
[INFO] [stdout] 16 |   #[brw(assert(version == 5))]
[INFO] [stdout] 17 |   pub(crate) version: u32,
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 18 |   pub(crate) agent_addr: IpAddr,
[INFO] [stdout] 19 |   pub(crate) sub_agent_id: u32,
[INFO] [stdout]    |              ^^^^^^^^^^^^
[INFO] [stdout] 20 |   pub(crate) seq_num: u32,
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 21 |   pub(crate) uptime: u32,
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 22 |   sample_count: u32,
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `magic`, `data_len`, and `data` are never read
[INFO] [stdout]    --> src/sflow/record.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |   Unknown {
[INFO] [stdout]     |   ------- fields in this variant
[INFO] [stdout] 104 |     magic: u32,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 105 |     data_len: u32,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 106 |     #[br(count = data_len)]
[INFO] [stdout] 107 |     data: Vec<u8>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Unknown` is never constructed
[INFO] [stdout]    --> src/sflow/record.rs:211:3
[INFO] [stdout]     |
[INFO] [stdout] 194 | pub(crate) enum HeaderProtocol {
[INFO] [stdout]     |                 -------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 211 |   Unknown { magic: u32 },
[INFO] [stdout]     |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stripped_octets` is never read
[INFO] [stdout]    --> src/sflow/record.rs:216:14
[INFO] [stdout]     |
[INFO] [stdout] 214 | pub(crate) struct RawPacketHeaderData {
[INFO] [stdout]     |                   ------------------- field in this struct
[INFO] [stdout] 215 |   pub(crate) frame_length: u32,
[INFO] [stdout] 216 |   pub(crate) stripped_octets: u32,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header_length` is never read
[INFO] [stdout]    --> src/sflow/record.rs:226:3
[INFO] [stdout]     |
[INFO] [stdout] 221 | struct RawPacketHeaderDataRaw {
[INFO] [stdout]     |        ---------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 226 |   header_length: u32,
[INFO] [stdout]     |   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/sflow/sample.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 |   Unknown(UnknownData),
[INFO] [stdout]    |   ------- ^^^^^^^^^^^
[INFO] [stdout]    |   |
[INFO] [stdout]    |   field in this variant
[INFO] [stdout]    |
[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] 17 |   Unknown(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `data_len`, `seq_num`, `source_id`, `sample_pool`, and `record_count` are never read
[INFO] [stdout]   --> src/sflow/sample.rs:37:3
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct FlowDataRaw {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout] 37 |   data_len: u32,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout] 38 |   seq_num: u32,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 39 |   source_id: u32,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 40 |   sample_rate: u32,
[INFO] [stdout] 41 |   sample_pool: u32,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |   record_count: u32,
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `magic`, `data_len`, and `data` are never read
[INFO] [stdout]   --> src/sflow/sample.rs:78:14
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub(crate) struct UnknownData {
[INFO] [stdout]    |                   ----------- fields in this struct
[INFO] [stdout] 78 |   pub(crate) magic: u32,
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout] 79 |   data_len: u32,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout] 80 |   #[br(count = data_len)]
[INFO] [stdout] 81 |   data: Vec<u8>,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `version`, `sub_agent_id`, `seq_num`, `uptime`, and `sample_count` are never read
[INFO] [stdout]   --> src/sflow/mod.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub(crate) struct SflowDatagram {
[INFO] [stdout]    |                   ------------- fields in this struct
[INFO] [stdout] 16 |   #[brw(assert(version == 5))]
[INFO] [stdout] 17 |   pub(crate) version: u32,
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 18 |   pub(crate) agent_addr: IpAddr,
[INFO] [stdout] 19 |   pub(crate) sub_agent_id: u32,
[INFO] [stdout]    |              ^^^^^^^^^^^^
[INFO] [stdout] 20 |   pub(crate) seq_num: u32,
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 21 |   pub(crate) uptime: u32,
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 22 |   sample_count: u32,
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `magic`, `data_len`, and `data` are never read
[INFO] [stdout]    --> src/sflow/record.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |   Unknown {
[INFO] [stdout]     |   ------- fields in this variant
[INFO] [stdout] 104 |     magic: u32,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 105 |     data_len: u32,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 106 |     #[br(count = data_len)]
[INFO] [stdout] 107 |     data: Vec<u8>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Unknown` is never constructed
[INFO] [stdout]    --> src/sflow/record.rs:211:3
[INFO] [stdout]     |
[INFO] [stdout] 194 | pub(crate) enum HeaderProtocol {
[INFO] [stdout]     |                 -------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 211 |   Unknown { magic: u32 },
[INFO] [stdout]     |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stripped_octets` is never read
[INFO] [stdout]    --> src/sflow/record.rs:216:14
[INFO] [stdout]     |
[INFO] [stdout] 214 | pub(crate) struct RawPacketHeaderData {
[INFO] [stdout]     |                   ------------------- field in this struct
[INFO] [stdout] 215 |   pub(crate) frame_length: u32,
[INFO] [stdout] 216 |   pub(crate) stripped_octets: u32,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header_length` is never read
[INFO] [stdout]    --> src/sflow/record.rs:226:3
[INFO] [stdout]     |
[INFO] [stdout] 221 | struct RawPacketHeaderDataRaw {
[INFO] [stdout]     |        ---------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 226 |   header_length: u32,
[INFO] [stdout]     |   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/sflow/sample.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 |   Unknown(UnknownData),
[INFO] [stdout]    |   ------- ^^^^^^^^^^^
[INFO] [stdout]    |   |
[INFO] [stdout]    |   field in this variant
[INFO] [stdout]    |
[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] 17 |   Unknown(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `data_len`, `seq_num`, `source_id`, `sample_pool`, and `record_count` are never read
[INFO] [stdout]   --> src/sflow/sample.rs:37:3
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct FlowDataRaw {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout] 37 |   data_len: u32,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout] 38 |   seq_num: u32,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 39 |   source_id: u32,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 40 |   sample_rate: u32,
[INFO] [stdout] 41 |   sample_pool: u32,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |   record_count: u32,
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `magic`, `data_len`, and `data` are never read
[INFO] [stdout]   --> src/sflow/sample.rs:78:14
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub(crate) struct UnknownData {
[INFO] [stdout]    |                   ----------- fields in this struct
[INFO] [stdout] 78 |   pub(crate) magic: u32,
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout] 79 |   data_len: u32,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout] 80 |   #[br(count = data_len)]
[INFO] [stdout] 81 |   data: Vec<u8>,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 58.78s
[INFO] running `Command { std: "docker" "inspect" "f1fe6e4581dc4714eca152b60082e1145110e3085810e47b381bade0fd95ea88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1fe6e4581dc4714eca152b60082e1145110e3085810e47b381bade0fd95ea88", kill_on_drop: false }`
[INFO] [stdout] f1fe6e4581dc4714eca152b60082e1145110e3085810e47b381bade0fd95ea88