[INFO] crate opentracing-rs-jaeger 0.1.0 is already in cache
[INFO] testing opentracing-rs-jaeger-0.1.0 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate opentracing-rs-jaeger 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate opentracing-rs-jaeger 0.1.0 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b6701b62523665810e2e7714a5eb80f3885e7041889c0d801d640e20c774783
[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" "2b6701b62523665810e2e7714a5eb80f3885e7041889c0d801d640e20c774783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b6701b62523665810e2e7714a5eb80f3885e7041889c0d801d640e20c774783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b6701b62523665810e2e7714a5eb80f3885e7041889c0d801d640e20c774783", kill_on_drop: false }`
[INFO] [stdout] 2b6701b62523665810e2e7714a5eb80f3885e7041889c0d801d640e20c774783
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2497f95d0955e60b80c9eaad88e810e0c2e102b315a81da2e8963524e020f4e2
[INFO] running `Command { std: "docker" "start" "-a" "2497f95d0955e60b80c9eaad88e810e0c2e102b315a81da2e8963524e020f4e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling futures v0.1.29
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling opentracing-rs-core v0.1.0
[INFO] [stderr]    Compiling 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: 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: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.67s
[INFO] running `Command { std: "docker" "inspect" "2497f95d0955e60b80c9eaad88e810e0c2e102b315a81da2e8963524e020f4e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2497f95d0955e60b80c9eaad88e810e0c2e102b315a81da2e8963524e020f4e2", kill_on_drop: false }`
[INFO] [stdout] 2497f95d0955e60b80c9eaad88e810e0c2e102b315a81da2e8963524e020f4e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ec320d900e98789d78b205f75775d376a0aa6c9c2ff9229094c1b9370a08e50
[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" "7ec320d900e98789d78b205f75775d376a0aa6c9c2ff9229094c1b9370a08e50", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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: 10 warnings emitted
[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: 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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7ec320d900e98789d78b205f75775d376a0aa6c9c2ff9229094c1b9370a08e50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ec320d900e98789d78b205f75775d376a0aa6c9c2ff9229094c1b9370a08e50", kill_on_drop: false }`
[INFO] [stdout] 7ec320d900e98789d78b205f75775d376a0aa6c9c2ff9229094c1b9370a08e50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 60059d9524d3f87fbab185b33cd5d64c84a16c47b7aaaf426a8c3b4faa065a86
[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" "60059d9524d3f87fbab185b33cd5d64c84a16c47b7aaaf426a8c3b4faa065a86", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reporter.rs:47:24
[INFO] [stderr]    |
[INFO] [stderr] 47 |     reporters: Vec<Box<Reporter>>,
[INFO] [stderr]    |                        ^^^^^^^^ help: use `dyn`: `dyn Reporter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reporter.rs:57:50
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn add_reporter(&mut self, reporter: Box<Reporter>) {
[INFO] [stderr]    |                                                  ^^^^^^^^ help: use `dyn`: `dyn Reporter`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/tracer.rs:39:32
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn serve(&mut self) -> (impl Future<Item = (), Error = ()>) {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/reporter.rs:40:26
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn report(&mut self, span: &Span) {}
[INFO] [stderr]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/reporter.rs:51:12
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn new() -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_reporter`
[INFO] [stderr]   --> src/reporter.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn add_reporter(&mut self, reporter: Box<Reporter>) {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `SAMPLER_PARAM_TAG_KEY`
[INFO] [stderr]  --> src/sampler.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const SAMPLER_PARAM_TAG_KEY: &str = "";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sampling_rate`
[INFO] [stderr]   --> src/sampler.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     sampling_rate: f64,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `service_name`
[INFO] [stderr]   --> src/tracer.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     service_name: Cow<'static, str>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sampler`
[INFO] [stderr]   --> src/tracer.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     sampler: S,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reporter.rs:47:24
[INFO] [stderr]    |
[INFO] [stderr] 47 |     reporters: Vec<Box<Reporter>>,
[INFO] [stderr]    |                        ^^^^^^^^ help: use `dyn`: `dyn Reporter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reporter.rs:57:50
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn add_reporter(&mut self, reporter: Box<Reporter>) {
[INFO] [stderr]    |                                                  ^^^^^^^^ help: use `dyn`: `dyn Reporter`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/tracer.rs:39:32
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn serve(&mut self) -> (impl Future<Item = (), Error = ()>) {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/reporter.rs:40:26
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn report(&mut self, span: &Span) {}
[INFO] [stderr]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/reporter.rs:51:12
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn new() -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_reporter`
[INFO] [stderr]   --> src/reporter.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn add_reporter(&mut self, reporter: Box<Reporter>) {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `SAMPLER_PARAM_TAG_KEY`
[INFO] [stderr]  --> src/sampler.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const SAMPLER_PARAM_TAG_KEY: &str = "";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sampling_rate`
[INFO] [stderr]   --> src/sampler.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     sampling_rate: f64,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `service_name`
[INFO] [stderr]   --> src/tracer.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     service_name: Cow<'static, str>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sampler`
[INFO] [stderr]   --> src/tracer.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     sampler: S,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/opentracing_rs_jaeger-bc270b7829d2ab4d
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests opentracing-rs-jaeger
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> /opt/rustwide/workdir/src/tracer.rs:39:32
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn serve(&mut self) -> (impl Future<Item = (), Error = ()>) {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stdout] running 0 tests
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "60059d9524d3f87fbab185b33cd5d64c84a16c47b7aaaf426a8c3b4faa065a86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60059d9524d3f87fbab185b33cd5d64c84a16c47b7aaaf426a8c3b4faa065a86", kill_on_drop: false }`
[INFO] [stdout] 60059d9524d3f87fbab185b33cd5d64c84a16c47b7aaaf426a8c3b4faa065a86