[INFO] fetching crate surge-ping 0.8.3...
[INFO] checking surge-ping-0.8.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate surge-ping 0.8.3 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate surge-ping 0.8.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate surge-ping 0.8.3
[INFO] tweaked toml for crates.io crate surge-ping 0.8.3 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate surge-ping 0.8.3 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 crates.io crate surge-ping 0.8.3 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] fecd61660b6c6e7c2fb66465192497cf6705c868a234c2a6c07540f901a4a77c
[INFO] running `Command { std: "docker" "start" "-a" "fecd61660b6c6e7c2fb66465192497cf6705c868a234c2a6c07540f901a4a77c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fecd61660b6c6e7c2fb66465192497cf6705c868a234c2a6c07540f901a4a77c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fecd61660b6c6e7c2fb66465192497cf6705c868a234c2a6c07540f901a4a77c", kill_on_drop: false }`
[INFO] [stdout] fecd61660b6c6e7c2fb66465192497cf6705c868a234c2a6c07540f901a4a77c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 586feb9fe6e4e3110341ef2990542951423fd1a61efb800d0aa93e11dc10c03d
[INFO] running `Command { std: "docker" "start" "-a" "586feb9fe6e4e3110341ef2990542951423fd1a61efb800d0aa93e11dc10c03d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]    Compiling futures-core v0.3.27
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling futures-task v0.3.27
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling futures-channel v0.3.27
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling zerocopy v0.8.21
[INFO] [stderr]     Checking no-std-net v0.6.0
[INFO] [stderr]    Compiling futures-util v0.3.27
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking futures-sink v0.3.27
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking pnet_base v0.34.0
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking futures-io v0.3.27
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking pnet_macros_support v0.34.0
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking socket2 v0.6.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]     Checking rand v0.9.0
[INFO] [stderr]    Compiling futures-macro v0.3.27
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]    Compiling pnet_macros v0.34.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking pnet_packet v0.34.0
[INFO] [stderr]     Checking futures-executor v0.3.27
[INFO] [stderr]     Checking futures v0.3.27
[INFO] [stderr]     Checking surge-ping v0.8.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `host` is never read
[INFO] [stdout]   --> src/error.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         host: IpAddr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ident` is never read
[INFO] [stdout]   --> src/error.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         ident: Option<PingIdentifier>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `seq` is never read
[INFO] [stdout]   --> src/error.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         seq: PingSequence,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `host` is never read
[INFO] [stdout]   --> src/error.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         host: IpAddr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ident` is never read
[INFO] [stdout]   --> src/error.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         ident: Option<PingIdentifier>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `seq` is never read
[INFO] [stdout]   --> src/error.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         seq: PingSequence,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `surge-ping` (example "simple") due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/simple.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     #[structopt(short = "h", long)]
[INFO] [stdout] 10 | |     host: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[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]   --> examples/simple.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     /// Source multicast packets with the given interface address.  This flag only applies if the ping
[INFO] [stdout] 19 | |     /// destination is a multicast address.
[INFO] [stdout] 20 | |     #[structopt(short = "I", long)]
[INFO] [stdout] 21 | |     iface: Option<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `surge-ping` (example "cmd") due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/cmd.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 96 | /     #[structopt(short = "h", long)]
[INFO] [stdout] 97 | |     host: 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]    --> examples/cmd.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 | /     /// Source multicast packets with the given interface address.  This flag only applies if the ping
[INFO] [stdout] 118 | |     /// destination is a multicast address.
[INFO] [stdout] 119 | |     #[structopt(short = "I", long)]
[INFO] [stdout] 120 | |     iface: Option<String>,
[INFO] [stdout]     | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "586feb9fe6e4e3110341ef2990542951423fd1a61efb800d0aa93e11dc10c03d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "586feb9fe6e4e3110341ef2990542951423fd1a61efb800d0aa93e11dc10c03d", kill_on_drop: false }`
[INFO] [stdout] 586feb9fe6e4e3110341ef2990542951423fd1a61efb800d0aa93e11dc10c03d
