[INFO] fetching crate opentracing-rs-jaeger 0.1.0...
[INFO] checking opentracing-rs-jaeger-0.1.0 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate opentracing-rs-jaeger 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate opentracing-rs-jaeger 0.1.0 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate opentracing-rs-jaeger 0.1.0
[INFO] finished tweaking crates.io crate opentracing-rs-jaeger 0.1.0
[INFO] tweaked toml for crates.io crate opentracing-rs-jaeger 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d60953ec4a4c1fca0f1bde6d74f463700706c12adfeb77bc9ae0d3f5128bb12
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0d60953ec4a4c1fca0f1bde6d74f463700706c12adfeb77bc9ae0d3f5128bb12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d60953ec4a4c1fca0f1bde6d74f463700706c12adfeb77bc9ae0d3f5128bb12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d60953ec4a4c1fca0f1bde6d74f463700706c12adfeb77bc9ae0d3f5128bb12", kill_on_drop: false }`
[INFO] [stdout] 0d60953ec4a4c1fca0f1bde6d74f463700706c12adfeb77bc9ae0d3f5128bb12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 560073194d62aa77ba61840125d9e5d55ef4beca77ea75b2d2a97db71617a212
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "560073194d62aa77ba61840125d9e5d55ef4beca77ea75b2d2a97db71617a212", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking opentracing-rs-core v0.1.0
[INFO] [stderr]     Checking opentracing-rs-jaeger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reporter.rs:47:24
[INFO] [stdout]    |
[INFO] [stdout] 47 |     reporters: Vec<Box<Reporter>>,
[INFO] [stdout]    |                        ^^^^^^^^ help: use `dyn`: `dyn Reporter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reporter.rs:57:50
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn add_reporter(&mut self, reporter: Box<Reporter>) {
[INFO] [stdout]    |                                                  ^^^^^^^^ help: use `dyn`: `dyn Reporter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/tracer.rs:39:32
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn serve(&mut self) -> (impl Future<Item = (), Error = ()>) {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reporter.rs:47:24
[INFO] [stdout]    |
[INFO] [stdout] 47 |     reporters: Vec<Box<Reporter>>,
[INFO] [stdout]    |                        ^^^^^^^^ help: use `dyn`: `dyn Reporter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reporter.rs:57:50
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn add_reporter(&mut self, reporter: Box<Reporter>) {
[INFO] [stdout]    |                                                  ^^^^^^^^ help: use `dyn`: `dyn Reporter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/tracer.rs:39:32
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn serve(&mut self) -> (impl Future<Item = (), Error = ()>) {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `span`
[INFO] [stdout]   --> src/reporter.rs:40:26
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn report(&mut self, span: &Span) {}
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `span`
[INFO] [stdout]   --> src/reporter.rs:40:26
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn report(&mut self, span: &Span) {}
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/reporter.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_reporter`
[INFO] [stdout]   --> src/reporter.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn add_reporter(&mut self, reporter: Box<Reporter>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SAMPLER_PARAM_TAG_KEY`
[INFO] [stdout]  --> src/sampler.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const SAMPLER_PARAM_TAG_KEY: &str = "";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sampling_rate`
[INFO] [stdout]   --> src/sampler.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     sampling_rate: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `service_name`
[INFO] [stdout]   --> src/tracer.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     service_name: Cow<'static, str>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sampler`
[INFO] [stdout]   --> src/tracer.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     sampler: S,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/reporter.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_reporter`
[INFO] [stdout]   --> src/reporter.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn add_reporter(&mut self, reporter: Box<Reporter>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SAMPLER_PARAM_TAG_KEY`
[INFO] [stdout]  --> src/sampler.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const SAMPLER_PARAM_TAG_KEY: &str = "";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sampling_rate`
[INFO] [stdout]   --> src/sampler.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     sampling_rate: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `service_name`
[INFO] [stdout]   --> src/tracer.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     service_name: Cow<'static, str>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sampler`
[INFO] [stdout]   --> src/tracer.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     sampler: S,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.50s
[INFO] running `Command { std: "docker" "inspect" "560073194d62aa77ba61840125d9e5d55ef4beca77ea75b2d2a97db71617a212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "560073194d62aa77ba61840125d9e5d55ef4beca77ea75b2d2a97db71617a212", kill_on_drop: false }`
[INFO] [stdout] 560073194d62aa77ba61840125d9e5d55ef4beca77ea75b2d2a97db71617a212