[INFO] cloning repository https://github.com/aldrio/passthrough-dns
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aldrio/passthrough-dns" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faldrio%2Fpassthrough-dns", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faldrio%2Fpassthrough-dns'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f4fd344cea935dfb34d035b35204b66ae675a6ca
[INFO] checking aldrio/passthrough-dns 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%2Faldrio%2Fpassthrough-dns" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/aldrio/passthrough-dns
[INFO] finished tweaking git repo https://github.com/aldrio/passthrough-dns
[INFO] tweaked toml for git repo https://github.com/aldrio/passthrough-dns written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aldrio/passthrough-dns 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/aldrio/passthrough-dns 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] db17dd6df8d44e453ac6cad1eddd6cdaa9cb68ced52d9ed4654bc863bba3f37f
[INFO] running `Command { std: "docker" "start" "-a" "db17dd6df8d44e453ac6cad1eddd6cdaa9cb68ced52d9ed4654bc863bba3f37f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db17dd6df8d44e453ac6cad1eddd6cdaa9cb68ced52d9ed4654bc863bba3f37f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db17dd6df8d44e453ac6cad1eddd6cdaa9cb68ced52d9ed4654bc863bba3f37f", kill_on_drop: false }`
[INFO] [stdout] db17dd6df8d44e453ac6cad1eddd6cdaa9cb68ced52d9ed4654bc863bba3f37f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 866819988e25a9a1db8533884b5472cd6f47c1152114e8ae1f486b1ac2057c3a
[INFO] running `Command { std: "docker" "start" "-a" "866819988e25a9a1db8533884b5472cd6f47c1152114e8ae1f486b1ac2057c3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]     Checking pin-project-lite v0.1.1
[INFO] [stderr]     Checking bytes v0.5.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.5
[INFO] [stderr]    Compiling tokio-macros v0.2.0
[INFO] [stderr]     Checking tokio v0.2.4
[INFO] [stderr]     Checking structopt v0.3.5
[INFO] [stderr]     Checking passthrough-dns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `StreamPacketBuffer` is never constructed
[INFO] [stdout]    --> src/dns/buffer.rs:236:12
[INFO] [stdout]     |
[INFO] [stdout] 236 | pub struct StreamPacketBuffer<'a, T>
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/dns/buffer.rs:249:12
[INFO] [stdout]     |
[INFO] [stdout] 245 | / impl<'a, T> StreamPacketBuffer<'a, T>
[INFO] [stdout] 246 | | where
[INFO] [stdout] 247 | |     T: Read + 'a,
[INFO] [stdout]     | |_________________- associated function in this implementation
[INFO] [stdout] 248 |   {
[INFO] [stdout] 249 |       pub fn new(stream: &'a mut T) -> StreamPacketBuffer<'_, T> {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_querytype`, `get_domain`, and `get_ttl` are never used
[INFO] [stdout]    --> src/dns/protocol.rs:517:12
[INFO] [stdout]     |
[INFO] [stdout] 180 | impl DnsRecord {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 517 |     pub fn get_querytype(&self) -> QueryType {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 532 |     pub fn get_domain(&self) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 547 |     pub fn get_ttl(&self) -> u32 {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_ttl_from_soa`, `get_random_a`, `get_unresolved_cnames`, `get_resolved_ns`, and `get_unresolved_ns` are never used
[INFO] [stdout]    --> src/dns/protocol.rs:887:12
[INFO] [stdout]     |
[INFO] [stdout] 825 | impl DnsPacket {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 887 |     pub fn get_ttl_from_soa(&self) -> Option<u32> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 897 |     pub fn get_random_a(&self) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 909 |     pub fn get_unresolved_cnames(&self) -> Vec<DnsRecord> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 932 |     pub fn get_resolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 978 |     pub fn get_unresolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | /     /// Zone names
[INFO] [stdout] 23 | |     #[structopt(short, long = "name")]
[INFO] [stdout] 24 | |     names: Vec<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]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | /     /// This server's FQDN
[INFO] [stdout] 27 | |     fqdn: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     /// This server's administrator's email address
[INFO] [stdout] 30 | |     email: Option<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/dns/buffer.rs:249:57
[INFO] [stdout]     |
[INFO] [stdout] 249 |     pub fn new(stream: &'a mut T) -> StreamPacketBuffer<'_, T> {
[INFO] [stdout]     |                         -- the lifetime is named here   ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 249 -     pub fn new(stream: &'a mut T) -> StreamPacketBuffer<'_, T> {
[INFO] [stdout] 249 +     pub fn new(stream: &'a mut T) -> StreamPacketBuffer<'a, T> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `passthrough-dns` (bin "passthrough-dns") due to 3 previous errors; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `StreamPacketBuffer` is never constructed
[INFO] [stdout]    --> src/dns/buffer.rs:236:12
[INFO] [stdout]     |
[INFO] [stdout] 236 | pub struct StreamPacketBuffer<'a, T>
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/dns/buffer.rs:249:12
[INFO] [stdout]     |
[INFO] [stdout] 245 | / impl<'a, T> StreamPacketBuffer<'a, T>
[INFO] [stdout] 246 | | where
[INFO] [stdout] 247 | |     T: Read + 'a,
[INFO] [stdout]     | |_________________- associated function in this implementation
[INFO] [stdout] 248 |   {
[INFO] [stdout] 249 |       pub fn new(stream: &'a mut T) -> StreamPacketBuffer<'_, T> {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_querytype`, `get_domain`, and `get_ttl` are never used
[INFO] [stdout]    --> src/dns/protocol.rs:517:12
[INFO] [stdout]     |
[INFO] [stdout] 180 | impl DnsRecord {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 517 |     pub fn get_querytype(&self) -> QueryType {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 532 |     pub fn get_domain(&self) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 547 |     pub fn get_ttl(&self) -> u32 {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_ttl_from_soa`, `get_random_a`, `get_unresolved_cnames`, `get_resolved_ns`, and `get_unresolved_ns` are never used
[INFO] [stdout]    --> src/dns/protocol.rs:887:12
[INFO] [stdout]     |
[INFO] [stdout] 825 | impl DnsPacket {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 887 |     pub fn get_ttl_from_soa(&self) -> Option<u32> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 897 |     pub fn get_random_a(&self) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 909 |     pub fn get_unresolved_cnames(&self) -> Vec<DnsRecord> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 932 |     pub fn get_resolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 978 |     pub fn get_unresolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | /     /// Zone names
[INFO] [stdout] 23 | |     #[structopt(short, long = "name")]
[INFO] [stdout] 24 | |     names: Vec<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]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | /     /// This server's FQDN
[INFO] [stdout] 27 | |     fqdn: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     /// This server's administrator's email address
[INFO] [stdout] 30 | |     email: Option<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/dns/buffer.rs:249:57
[INFO] [stdout]     |
[INFO] [stdout] 249 |     pub fn new(stream: &'a mut T) -> StreamPacketBuffer<'_, T> {
[INFO] [stdout]     |                         -- the lifetime is named here   ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 249 -     pub fn new(stream: &'a mut T) -> StreamPacketBuffer<'_, T> {
[INFO] [stdout] 249 +     pub fn new(stream: &'a mut T) -> StreamPacketBuffer<'a, T> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `passthrough-dns` (bin "passthrough-dns" test) due to 3 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "866819988e25a9a1db8533884b5472cd6f47c1152114e8ae1f486b1ac2057c3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "866819988e25a9a1db8533884b5472cd6f47c1152114e8ae1f486b1ac2057c3a", kill_on_drop: false }`
[INFO] [stdout] 866819988e25a9a1db8533884b5472cd6f47c1152114e8ae1f486b1ac2057c3a
