[INFO] cloning repository https://github.com/ROki1988/ot-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ROki1988/ot-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FROki1988%2Fot-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FROki1988%2Fot-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d5bd50eed44bd5b2206226737081ec3d26abc92d
[INFO] checking ROki1988/ot-rs against try#5ec4d3b0c83717313176eefa7d71e9d36dc83355 for 155501-infallible-never-with-reservation
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FROki1988%2Fot-rs" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ROki1988/ot-rs
[INFO] finished tweaking git repo https://github.com/ROki1988/ot-rs
[INFO] tweaked toml for git repo https://github.com/ROki1988/ot-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ROki1988/ot-rs on toolchain 5ec4d3b0c83717313176eefa7d71e9d36dc83355
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ROki1988/ot-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" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 031cf2b0f78c0c1af06cd0f5249b685f8ffeada222f9f3c2dfcb691f9d40348f
[INFO] running `Command { std: "docker" "start" "-a" "031cf2b0f78c0c1af06cd0f5249b685f8ffeada222f9f3c2dfcb691f9d40348f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "031cf2b0f78c0c1af06cd0f5249b685f8ffeada222f9f3c2dfcb691f9d40348f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "031cf2b0f78c0c1af06cd0f5249b685f8ffeada222f9f3c2dfcb691f9d40348f", kill_on_drop: false }`
[INFO] [stdout] 031cf2b0f78c0c1af06cd0f5249b685f8ffeada222f9f3c2dfcb691f9d40348f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ced78e5798c48c04db18917de041367ea780906132f587868b74578e440f716
[INFO] running `Command { std: "docker" "start" "-a" "0ced78e5798c48c04db18917de041367ea780906132f587868b74578e440f716", kill_on_drop: false }`
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[INFO] [stdout] warning: fields `name`, `description`, `unit`, and `type_` are never read
[INFO] [stdout]  --> src/api/registry.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Variable {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 4 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     description: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 6 |     unit: Unit,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 7 |     // FIXME: modify name to type
[INFO] [stdout] 8 |     type_: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Tracer` is never used
[INFO] [stdout]   --> src/api/trace.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 | trait Tracer<'a, S>
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `SERVER`, `CLIENT`, `PRODUCER`, and `CONSUMER` are never constructed
[INFO] [stdout]   --> src/api/trace.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | enum SpanKind {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] 30 |     INTERNAL,
[INFO] [stdout] 31 |     SERVER,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 32 |     CLIENT,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     PRODUCER,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 34 |     CONSUMER,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Span` is never used
[INFO] [stdout]   --> src/api/trace.rs:37:7
[INFO] [stdout]    |
[INFO] [stdout] 37 | trait Span<'a>: Sized + Sync {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `new_with_attributes` are never used
[INFO] [stdout]   --> src/api/trace.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl Event {
[INFO] [stdout]    | ---------- associated functions in this implementation
[INFO] [stdout] 70 |     fn new(name: &str) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn new_with_attributes(name: &str, attributes: HashMap<String, Value>) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `timestamp`, `name`, and `attributes` are never read
[INFO] [stdout]   --> src/api/trace.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct TimedEvent {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 84 |     timestamp: Timestamp,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 85 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 86 |     attributes: HashMap<String, Value>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TimedEvent` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/api/trace.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub(crate) struct Timestamp(SystemTime);
[INFO] [stdout]     |                   --------- ^^^^^^^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Timestamp` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `as_millis`, `as_micros`, `as_nanos`, `duration_since_as_millis`, `duration_since_as_micros`, and `duration_since_as_nanos` are never used
[INFO] [stdout]    --> src/api/trace.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | impl Timestamp {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 111 |     fn as_millis(&self) -> u128 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     fn as_micros(&self) -> u128 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 125 |     fn as_nanos(&self) -> u128 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 |     fn duration_since_as_millis(&self, other: &Self) -> Option<u128> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 140 |     fn duration_since_as_micros(&self, other: &Self) -> Option<u128> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     fn duration_since_as_nanos(&self, other: &Self) -> Option<u128> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]   --> src/api/trace/in_memory.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<'a, 'b> InMemorySpan<'a, 'b> {
[INFO] [stdout]    | --------------------------------- methods in this implementation
[INFO] [stdout] 27 |     fn span_duration_as_millis(&self) -> Option<u128> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn span_duration_as_micros(&self) -> Option<u128> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn span_duration_as_nanos(&self) -> Option<u128> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn get_links_iter(&self) -> impl Iterator<Item = &Link> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn get_events_iter(&self) -> impl Iterator<Item = &TimedEvent> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn get_attributes_iter(&self) -> impl Iterator<Item = (&String, &Value)> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn get_start_epoch_time_as_millis(&self) -> u128 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn get_finish_epoch_time_as_millis(&self) -> Option<u128> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn get_start_epoch_time_as_micros(&self) -> u128 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn get_finish_epoch_time_as_micros(&self) -> Option<u128> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn get_start_epoch_time_as_nanos(&self) -> u128 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn get_finish_epoch_time_as_nanos(&self) -> Option<u128> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InMemoryTracer` is never constructed
[INFO] [stdout]    --> src/api/trace/in_memory.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 | struct InMemoryTracer<'a, 'b> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `current_trace` is never used
[INFO] [stdout]    --> src/api/trace/in_memory.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | impl<'a, 'b> InMemoryTracer<'a, 'b> {
[INFO] [stdout]     | ----------------------------------- method in this implementation
[INFO] [stdout] 128 |     fn current_trace(&self) -> Option<&TraceContext> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `variable` is never read
[INFO] [stdout]  --> src/api/trace/key.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Key {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 4 |     variable: registry::Variable,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `value` are never read
[INFO] [stdout]   --> src/api/trace/key.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct KeyValue {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 17 |     key: Key,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 18 |     value: Value,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Scope` is never constructed
[INFO] [stdout]  --> src/api/trace/scope.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Scope<F, S> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `run` are never used
[INFO] [stdout]   --> src/api/trace/scope.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | / impl<'a, F, U, S> Scope<F, S>
[INFO] [stdout]  9 | | where
[INFO] [stdout] 10 | |     F: Fn() -> U,
[INFO] [stdout] 11 | |     S: Span<'a>,
[INFO] [stdout]    | |________________- associated items in this implementation
[INFO] [stdout] 12 |   {
[INFO] [stdout] 13 |       fn new(span: S, f: F) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |       fn run(&mut self) -> U {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `trace_id`, `span_id`, `trace_option`, and `trace_state` are never read
[INFO] [stdout]   --> src/api/trace/span_data.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct ImmutableSpanContext {
[INFO] [stdout]    |        -------------------- fields in this struct
[INFO] [stdout] 12 |     trace_id: TraceId,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 13 |     span_id: SpanId,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 14 |     trace_option: TraceOption,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 15 |     trace_state: TraceState,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `span_context` and `attributes` are never read
[INFO] [stdout]   --> src/api/trace/span_data.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct ImmutableLink {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 41 |     span_context: ImmutableSpanContext,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 42 |     attributes: HashMap<String, Value>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/api/trace/span_data.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct SpanData {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 65 |     // should not has lifetime, maybe
[INFO] [stdout] 66 |     context: ImmutableSpanContext,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 67 |     resource: Resource,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 68 |     parent_span_id: Option<SpanId>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 69 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 70 |     kind: SpanKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 71 |     start_time: Timestamp,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 72 |     end_time: Timestamp,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 73 |     attributes: HashMap<String, Value>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 74 |     events: Vec<TimedEvent>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 75 |     links: Vec<ImmutableLink>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 76 |     status: Status,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_str` is never used
[INFO] [stdout]  --> src/api/unit.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl Unit {
[INFO] [stdout]   | --------- method in this implementation
[INFO] [stdout] 8 |     fn to_str(&self) -> &str {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/api/trace.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn context(&self) -> &SpanContext;
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^^^^^
[INFO] [stdout]    |                |         ||
[INFO] [stdout]    |                |         |the same lifetime is hidden here
[INFO] [stdout]    |                |         the same lifetime is elided here
[INFO] [stdout]    |                the 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: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn context(&self) -> &SpanContext<'_>;
[INFO] [stdout]    |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/api/trace/in_memory.rs:43:23
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn get_links_iter(&self) -> impl Iterator<Item = &Link> {
[INFO] [stdout]    |                       ^^^^^                          ^^^^^
[INFO] [stdout]    |                       |                              ||
[INFO] [stdout]    |                       |                              |the same lifetime is hidden here
[INFO] [stdout]    |                       |                              the same lifetime is elided here
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn get_links_iter(&self) -> impl Iterator<Item = &Link<'_>> {
[INFO] [stdout]    |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/api/trace/in_memory.rs:84:16
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn context(&self) -> &SpanContext {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^^^^^
[INFO] [stdout]    |                |         ||
[INFO] [stdout]    |                |         |the same lifetime is hidden here
[INFO] [stdout]    |                |         the same lifetime is elided here
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn context(&self) -> &SpanContext<'_> {
[INFO] [stdout]    |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking warp v0.1.20
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.20/src/test.rs:502:30
[INFO] [stdout]      |
[INFO] [stdout]  502 |                     .forward(tx.sink_map_err(|_| ()))
[INFO] [stdout]      |                      ------- ^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]      |                      |
[INFO] [stdout]      |                      required by a bound introduced by this call
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]      = help: you might have intended to use the type `()` here instead
[INFO] [stdout] note: the method call chain might not have had the expected associated types
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.20/src/test.rs:502:33
[INFO] [stdout]      |
[INFO] [stdout]  502 |                     .forward(tx.sink_map_err(|_| ()))
[INFO] [stdout]      |                              -- ^^^^^^^^^^^^^^^^^^^^ `Sink::SinkError` is `()` here
[INFO] [stdout]      |                              |
[INFO] [stdout]      |                              this expression has type `SplitSink<WebSocket>`
[INFO] [stdout] note: required by a bound in `futures::Stream::forward`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.28/src/stream/mod.rs:1067:28
[INFO] [stdout]      |
[INFO] [stdout] 1065 |     fn forward<S>(self, sink: S) -> Forward<Self, S>
[INFO] [stdout]      |        ------- required by a bound in this associated function
[INFO] [stdout] 1066 |         where S: Sink<SinkItem = Self::Item>,
[INFO] [stdout] 1067 |               Self::Error: From<S::SinkError>,
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^^^^^ required by this bound in `Stream::forward`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.20/src/test.rs:498:29
[INFO] [stdout]     |
[INFO] [stdout] 498 |                   let write = wr_rx
[INFO] [stdout]     |  _____________________________^
[INFO] [stdout] 499 | |                     .map_err(|()| {
[INFO] [stdout] 500 | |                         unreachable!("mpsc::Receiver doesn't error");
[INFO] [stdout] 501 | |                     })
[INFO] [stdout] 502 | |                     .forward(tx.sink_map_err(|_| ()))
[INFO] [stdout] 503 | |                     .map(|_| ());
[INFO] [stdout]     | |________________________________^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `futures::Future` is implemented for `Forward<T, U>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.28/src/stream/forward.rs:78:1
[INFO] [stdout]     |
[INFO] [stdout]  78 | / impl<T, U> Future for Forward<T, U>
[INFO] [stdout]  79 | |     where U: Sink<SinkItem=T::Item>,
[INFO] [stdout]  80 | |           T: Stream,
[INFO] [stdout]  81 | |           T::Error: From<U::SinkError>,
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Forward<MapErr<UnboundedReceiver<Message>, {closure@...}>, ...>` to implement `futures::Future`
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/warp-4717ae6a196c29ea.long-type-9190415802690158675.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.20/src/test.rs:503:22
[INFO] [stdout]     |
[INFO] [stdout] 503 |                     .map(|_| ());
[INFO] [stdout]     |                      ^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `futures::Future` is implemented for `Forward<T, U>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.28/src/stream/forward.rs:78:1
[INFO] [stdout]     |
[INFO] [stdout]  78 | / impl<T, U> Future for Forward<T, U>
[INFO] [stdout]  79 | |     where U: Sink<SinkItem=T::Item>,
[INFO] [stdout]  80 | |           T: Stream,
[INFO] [stdout]  81 | |           T::Error: From<U::SinkError>,
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Forward<MapErr<UnboundedReceiver<Message>, {closure@...}>, ...>` to implement `futures::Future`
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/warp-4717ae6a196c29ea.long-type-9190415802690158675.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.20/src/test.rs:510:30
[INFO] [stdout]      |
[INFO] [stdout]  510 |                     .forward(rd_tx.sink_map_err(|_| ()))
[INFO] [stdout]      |                      ------- ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]      |                      |
[INFO] [stdout]      |                      required by a bound introduced by this call
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]      = help: you might have intended to use the type `()` here instead
[INFO] [stdout] note: the method call chain might not have had the expected associated types
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.20/src/test.rs:510:36
[INFO] [stdout]      |
[INFO] [stdout]  510 |                     .forward(rd_tx.sink_map_err(|_| ()))
[INFO] [stdout]      |                              ----- ^^^^^^^^^^^^^^^^^^^^ `Sink::SinkError` is `()` here
[INFO] [stdout]      |                              |
[INFO] [stdout]      |                              this expression has type `UnboundedSender<Result<Message, Error>>`
[INFO] [stdout] note: required by a bound in `futures::Stream::forward`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.28/src/stream/mod.rs:1067:28
[INFO] [stdout]      |
[INFO] [stdout] 1065 |     fn forward<S>(self, sink: S) -> Forward<Self, S>
[INFO] [stdout]      |        ------- required by a bound in this associated function
[INFO] [stdout] 1066 |         where S: Sink<SinkItem = Self::Item>,
[INFO] [stdout] 1067 |               Self::Error: From<S::SinkError>,
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^^^^^ required by this bound in `Stream::forward`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.20/src/test.rs:505:28
[INFO] [stdout]     |
[INFO] [stdout] 505 |                   let read = rx
[INFO] [stdout]     |  ____________________________^
[INFO] [stdout] 506 | |                     .take_while(|m| {
[INFO] [stdout] 507 | |                         futures::future::ok(!m.is_close())
[INFO] [stdout] 508 | |                     })
[INFO] [stdout] 509 | |                     .then(|result| Ok(result))
[INFO] [stdout] 510 | |                     .forward(rd_tx.sink_map_err(|_| ()))
[INFO] [stdout] 511 | |                     .map(|_| ());
[INFO] [stdout]     | |________________________________^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `futures::Future` is implemented for `Forward<T, U>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.28/src/stream/forward.rs:78:1
[INFO] [stdout]     |
[INFO] [stdout]  78 | / impl<T, U> Future for Forward<T, U>
[INFO] [stdout]  79 | |     where U: Sink<SinkItem=T::Item>,
[INFO] [stdout]  80 | |           T: Stream,
[INFO] [stdout]  81 | |           T::Error: From<U::SinkError>,
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Forward<Then<TakeWhile<SplitStream<...>, ..., ...>, ..., ...>, ...>` to implement `futures::Future`
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/warp-4717ae6a196c29ea.long-type-13434851028608549352.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.20/src/test.rs:511:22
[INFO] [stdout]     |
[INFO] [stdout] 511 |                     .map(|_| ());
[INFO] [stdout]     |                      ^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `futures::Future` is implemented for `Forward<T, U>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.28/src/stream/forward.rs:78:1
[INFO] [stdout]     |
[INFO] [stdout]  78 | / impl<T, U> Future for Forward<T, U>
[INFO] [stdout]  79 | |     where U: Sink<SinkItem=T::Item>,
[INFO] [stdout]  80 | |           T: Stream,
[INFO] [stdout]  81 | |           T::Error: From<U::SinkError>,
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Forward<Then<TakeWhile<SplitStream<...>, ..., ...>, ..., ...>, ...>` to implement `futures::Future`
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/warp-4717ae6a196c29ea.long-type-13434851028608549352.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.20/src/test.rs:513:40
[INFO] [stdout]     |
[INFO] [stdout] 513 |                 rt.block_on(write.join(read)).expect("websocket forward");
[INFO] [stdout]     |                                   ---- ^^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `futures::Future` is implemented for `futures::future::Map<A, F>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.28/src/future/map.rs:22:1
[INFO] [stdout]     |
[INFO] [stdout]  22 | / impl<U, A, F> Future for Map<A, F>
[INFO] [stdout]  23 | |     where A: Future,
[INFO] [stdout]  24 | |           F: FnOnce(A::Item) -> U,
[INFO] [stdout]     | |__________________________________^
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Forward<Then<TakeWhile<SplitStream<...>, ..., ...>, ..., ...>, ...>` to implement `futures::Future`
[INFO] [stdout]     = note: 1 redundant requirement hidden
[INFO] [stdout]     = note: required for `Map<Forward<Then<TakeWhile<..., ..., ...>, ..., ...>, ...>, ...>` to implement `futures::Future`
[INFO] [stdout] note: required by a bound in `futures::Future::join`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.28/src/future/mod.rs:716:29
[INFO] [stdout]     |
[INFO] [stdout] 715 |     fn join<B>(self, other: B) -> Join<Self, B::Future>
[INFO] [stdout]     |        ---- required by a bound in this associated function
[INFO] [stdout] 716 |         where B: IntoFuture<Error=Self::Error>,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^ required by this bound in `Future::join`
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/warp-4717ae6a196c29ea.long-type-1385178744189864090.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `warp` (lib) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "0ced78e5798c48c04db18917de041367ea780906132f587868b74578e440f716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ced78e5798c48c04db18917de041367ea780906132f587868b74578e440f716", kill_on_drop: false }`
[INFO] [stdout] 0ced78e5798c48c04db18917de041367ea780906132f587868b74578e440f716
