[INFO] cloning repository https://github.com/visnkmr/opentelemetrytest_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/visnkmr/opentelemetrytest_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvisnkmr%2Fopentelemetrytest_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvisnkmr%2Fopentelemetrytest_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 597b100949656ce621e6e427d1758229ede2506b
[INFO] checking visnkmr/opentelemetrytest_rust against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvisnkmr%2Fopentelemetrytest_rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/visnkmr/opentelemetrytest_rust
[INFO] finished tweaking git repo https://github.com/visnkmr/opentelemetrytest_rust
[INFO] tweaked toml for git repo https://github.com/visnkmr/opentelemetrytest_rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/visnkmr/opentelemetrytest_rust on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/visnkmr/opentelemetrytest_rust 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" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded integer-encoding v1.1.7
[INFO] [stderr]   Downloaded opentelemetry-http v0.8.0
[INFO] [stderr]   Downloaded opentelemetry-semantic-conventions v0.8.0
[INFO] [stderr]   Downloaded thrift v0.13.0
[INFO] [stderr]   Downloaded serde v1.0.177
[INFO] [stderr]   Downloaded opentelemetry_api v0.19.0
[INFO] [stderr]   Downloaded opentelemetry v0.16.0
[INFO] [stderr]   Downloaded opentelemetry-jaeger v0.15.0
[INFO] [stderr]   Downloaded fltk v1.4.8
[INFO] [stderr]   Downloaded syn v2.0.27
[INFO] [stderr]   Downloaded serde_derive v1.0.177
[INFO] [stderr]   Downloaded fltk-sys v1.4.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c052820bb64b4efa790e215e7a72c5ad7d78ba45a77f424618ed2cb81d3b2a43
[INFO] running `Command { std: "docker" "start" "-a" "c052820bb64b4efa790e215e7a72c5ad7d78ba45a77f424618ed2cb81d3b2a43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c052820bb64b4efa790e215e7a72c5ad7d78ba45a77f424618ed2cb81d3b2a43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c052820bb64b4efa790e215e7a72c5ad7d78ba45a77f424618ed2cb81d3b2a43", kill_on_drop: false }`
[INFO] [stdout] c052820bb64b4efa790e215e7a72c5ad7d78ba45a77f424618ed2cb81d3b2a43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b58c4aefeb04acd4561987e7f48917234147648ea52f86d959a23d06862f539
[INFO] running `Command { std: "docker" "start" "-a" "1b58c4aefeb04acd4561987e7f48917234147648ea52f86d959a23d06862f539", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking pin-project-lite v0.2.10
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking futures-sink v0.3.28
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[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling slab v0.4.8
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[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling thiserror v1.0.44
[INFO] [stderr]     Checking smallvec v1.11.0
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling async-trait v0.1.72
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling serde v1.0.177
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[INFO] [stderr]    Compiling cc v1.0.79
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[INFO] [stderr]     Checking ttf-parser v0.19.1
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[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking thrift v0.13.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling thiserror-impl v1.0.44
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.2
[INFO] [stderr]     Checking pin-project v1.1.2
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking opentelemetry_api v0.19.0
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking opentelemetry-http v0.8.0
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[INFO] [stderr]     Checking opentelemetry v0.16.0
[INFO] [stderr]     Checking opentelemetry-semantic-conventions v0.8.0
[INFO] [stderr]     Checking opentelemetry-jaeger v0.15.0
[INFO] [stderr]     Checking fltk v1.4.8
[INFO] [stderr]     Checking testotel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `sync::mpsc`, `thread`, and `time::Duration`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time::Duration, error::Error, thread, sync::mpsc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^                ^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Key`, `SpanKind`, and `TracerProvider`
[INFO] [stdout]   --> src/main.rs:13:77
[INFO] [stdout]    |
[INFO] [stdout] 13 | ...t, SpanKind, Span, get_active_span}, sdk::{trace::{Config, TracerProvider}, Resource, propagation::TraceContextPropagator}, KeyValue, global, Key, C...
[INFO] [stdout]    |       ^^^^^^^^                                                ^^^^^^^^^^^^^^                                                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/main.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut k=false;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut k=false;
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `sync::mpsc`, `thread`, and `time::Duration`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time::Duration, error::Error, thread, sync::mpsc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^                ^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Key`, `SpanKind`, and `TracerProvider`
[INFO] [stdout]   --> src/main.rs:13:77
[INFO] [stdout]    |
[INFO] [stdout] 13 | ...t, SpanKind, Span, get_active_span}, sdk::{trace::{Config, TracerProvider}, Resource, propagation::TraceContextPropagator}, KeyValue, global, Key, C...
[INFO] [stdout]    |       ^^^^^^^^                                                ^^^^^^^^^^^^^^                                                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/main.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut k=false;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut k=false;
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cxtin`
[INFO] [stdout]   --> src/main.rs:45:22
[INFO] [stdout]    |
[INFO] [stdout] 45 |     get_active_span(|cxtin| async{
[INFO] [stdout]    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_cxtin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cxtin`
[INFO] [stdout]   --> src/main.rs:45:22
[INFO] [stdout]    |
[INFO] [stdout] 45 |     get_active_span(|cxtin| async{
[INFO] [stdout]    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_cxtin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 | /         tokio::spawn(tokio::spawn(async move{
[INFO] [stdout] 52 | |             let cx = Context::current();
[INFO] [stdout] 53 | |             let tracer = global::tracer("example-opentelemetry/thread");
[INFO] [stdout] 54 | |             let mut span = tracer.start("thread_code");
[INFO] [stdout] ...  |
[INFO] [stdout] 78 | |     .with_context(cx)
[INFO] [stdout] 79 | |     .await;
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let _ = tokio::spawn(tokio::spawn(async move{
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 | /         tokio::spawn(tokio::spawn(async move{
[INFO] [stdout] 52 | |             let cx = Context::current();
[INFO] [stdout] 53 | |             let tracer = global::tracer("example-opentelemetry/thread");
[INFO] [stdout] 54 | |             let mut span = tracer.start("thread_code");
[INFO] [stdout] ...  |
[INFO] [stdout] 78 | |     .with_context(cx)
[INFO] [stdout] 79 | |     .await;
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let _ = tokio::spawn(tokio::spawn(async move{
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 44s
[INFO] running `Command { std: "docker" "inspect" "1b58c4aefeb04acd4561987e7f48917234147648ea52f86d959a23d06862f539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b58c4aefeb04acd4561987e7f48917234147648ea52f86d959a23d06862f539", kill_on_drop: false }`
[INFO] [stdout] 1b58c4aefeb04acd4561987e7f48917234147648ea52f86d959a23d06862f539
