[INFO] cloning repository https://github.com/sebglazebrook/ping-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sebglazebrook/ping-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsebglazebrook%2Fping-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsebglazebrook%2Fping-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4208ffff37cdfcdf8671ef369f10e4d498c79b8
[INFO] documenting sebglazebrook/ping-rs against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsebglazebrook%2Fping-rs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sebglazebrook/ping-rs on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sebglazebrook/ping-rs
[INFO] finished tweaking git repo https://github.com/sebglazebrook/ping-rs
[INFO] tweaked toml for git repo https://github.com/sebglazebrook/ping-rs written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sebglazebrook/ping-rs 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ipnetwork v0.12.7
[INFO] [stderr]   Downloaded pnet_macros_support v0.20.0
[INFO] [stderr]   Downloaded pnet v0.20.0
[INFO] [stderr]   Downloaded pnet_datalink v0.20.0
[INFO] [stderr]   Downloaded regex v0.2.6
[INFO] [stderr]   Downloaded pnet_sys v0.20.0
[INFO] [stderr]   Downloaded pnet_base v0.20.0
[INFO] [stderr]   Downloaded pnet_transport v0.20.0
[INFO] [stderr]   Downloaded pnet_macros v0.20.0
[INFO] [stderr]   Downloaded pnet_packet v0.20.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76ed217e3ce5b536bc40ca8b2603fae3990a28ee7f4a71532941eb9e25b788e3
[INFO] running `Command { std: "docker" "start" "-a" "76ed217e3ce5b536bc40ca8b2603fae3990a28ee7f4a71532941eb9e25b788e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76ed217e3ce5b536bc40ca8b2603fae3990a28ee7f4a71532941eb9e25b788e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76ed217e3ce5b536bc40ca8b2603fae3990a28ee7f4a71532941eb9e25b788e3", kill_on_drop: false }`
[INFO] [stdout] 76ed217e3ce5b536bc40ca8b2603fae3990a28ee7f4a71532941eb9e25b788e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9afb44ebb027f4f8d97b66bc71d67f4fd9620c30797a1ed93802a89889bc908
[INFO] running `Command { std: "docker" "start" "-a" "d9afb44ebb027f4f8d97b66bc71d67f4fd9620c30797a1ed93802a89889bc908", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]     Checking pnet_base v0.20.0
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking pnet_macros_support v0.20.0
[INFO] [stderr]     Checking ipnetwork v0.12.7
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling pnet v0.20.0
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]     Checking pnet_sys v0.20.0
[INFO] [stderr]     Checking pnet_datalink v0.20.0
[INFO] [stderr]    Compiling regex v0.2.6
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.20.0
[INFO] [stderr]    Compiling pnet_packet v0.20.0
[INFO] [stderr]     Checking pnet_transport v0.20.0
[INFO] [stderr]     Checking ping-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting ping-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ping/network_layer.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     transmitter: Box<datalink::DataLinkSender>,
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     transmitter: Box<dyn datalink::DataLinkSender>,
[INFO] [stdout]   |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/ping/network_layer.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 |     receiver: Box<datalink::DataLinkReceiver>,
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     receiver: Box<dyn datalink::DataLinkReceiver>,
[INFO] [stdout]   |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ping/network_layer.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let (mut tx, mut rx) = match datalink::channel(&interface, datalink::Config::default()) {
[INFO] [stdout]    |              ----^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ping/network_layer.rs:15:22
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let (mut tx, mut rx) = match datalink::channel(&interface, datalink::Config::default()) {
[INFO] [stdout]    |                      ----^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `message_type`, `code`, `checksum`, `identifier`, and `sequence_number` are never read
[INFO] [stdout]  --> src/ping/icmp_packet.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct IcmpHeader {
[INFO] [stdout]   |        ---------- fields in this struct
[INFO] [stdout] 3 |     // first 32 bits
[INFO] [stdout] 4 |     message_type: u8, // just `type` in rfc
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 5 |     code: u8,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     checksum: u16,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 7 |     // second 32 bits
[INFO] [stdout] 8 |     identifier: u16,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 9 |     sequence_number: u16,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IcmpHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `header` and `payload` are never read
[INFO] [stdout]   --> src/ping/icmp_packet.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct IcmpPacket {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 28 |     header: IcmpHeader, // 8 bytes
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 29 |     payload: String, // optional ( can store send time in here and then calculate the trip time when it's returned )
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IcmpPacket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `interface` and `receiver` are never read
[INFO] [stdout]  --> src/ping/network_layer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct NetworkLayer {
[INFO] [stdout]   |            ------------ fields in this struct
[INFO] [stdout] 6 |     interface: datalink::NetworkInterface,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 7 |     transmitter: Box<datalink::DataLinkSender>,
[INFO] [stdout] 8 |     receiver: Box<datalink::DataLinkReceiver>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal out of range for `u8`
[INFO] [stdout]   --> src/ping/ip_header.rs:31:22
[INFO] [stdout]    |
[INFO] [stdout] 31 |             version: 0x0800, // TODO correct value ??
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the literal `0x0800` (decimal `2048`) does not fit into the type `u8` and will become `0u8`
[INFO] [stdout]    = help: consider using the type `u16` instead
[INFO] [stdout]    = note: `#[warn(overflowing_literals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/ping/ip_header.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         header_checksum.write_u16::<BigEndian>(self.header_checksum);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let _ = header_checksum.write_u16::<BigEndian>(self.header_checksum);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.75s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/ping/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/ping_rs/index.html
[INFO] running `Command { std: "docker" "inspect" "d9afb44ebb027f4f8d97b66bc71d67f4fd9620c30797a1ed93802a89889bc908", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9afb44ebb027f4f8d97b66bc71d67f4fd9620c30797a1ed93802a89889bc908", kill_on_drop: false }`
[INFO] [stdout] d9afb44ebb027f4f8d97b66bc71d67f4fd9620c30797a1ed93802a89889bc908
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "+1.75.0" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95e05bfb3acf7002c3968ea82e2add8a0abd0b7bcd47789f8a9095194e73626f
[INFO] running `Command { std: "docker" "start" "-a" "95e05bfb3acf7002c3968ea82e2add8a0abd0b7bcd47789f8a9095194e73626f", kill_on_drop: false }`
[INFO] [stderr]  Documenting ping-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/ping/index.html
[INFO] running `Command { std: "docker" "inspect" "95e05bfb3acf7002c3968ea82e2add8a0abd0b7bcd47789f8a9095194e73626f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95e05bfb3acf7002c3968ea82e2add8a0abd0b7bcd47789f8a9095194e73626f", kill_on_drop: false }`
[INFO] [stdout] 95e05bfb3acf7002c3968ea82e2add8a0abd0b7bcd47789f8a9095194e73626f
