[INFO] fetching crate opentracingrust 0.4.0...
[INFO] testing opentracingrust-0.4.0 against try#ecd7b559f89c73ac8f1d318f7501006f37b944b2 for pr-112849
[INFO] extracting crate opentracingrust 0.4.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate opentracingrust 0.4.0 on toolchain ecd7b559f89c73ac8f1d318f7501006f37b944b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate opentracingrust 0.4.0
[INFO] finished tweaking crates.io crate opentracingrust 0.4.0
[INFO] tweaked toml for crates.io crate opentracingrust 0.4.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate opentracingrust 0.4.0 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" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cd443ae8673bfcde40f9196e420c30fbad6356a34fee37cf654b0f26794b5d3
[INFO] running `Command { std: "docker" "start" "-a" "5cd443ae8673bfcde40f9196e420c30fbad6356a34fee37cf654b0f26794b5d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cd443ae8673bfcde40f9196e420c30fbad6356a34fee37cf654b0f26794b5d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cd443ae8673bfcde40f9196e420c30fbad6356a34fee37cf654b0f26794b5d3", kill_on_drop: false }`
[INFO] [stdout] 5cd443ae8673bfcde40f9196e420c30fbad6356a34fee37cf654b0f26794b5d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 953a1fc582e03a405024870fd99a53274d5a92d7c23d1711ad6e6f98fed64b92
[INFO] running `Command { std: "docker" "start" "-a" "953a1fc582e03a405024870fd99a53274d5a92d7c23d1711ad6e6f98fed64b92", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling opentracingrust v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `span_id` is never read
[INFO] [stdout]   --> src/tracers/noop.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | struct NoopTracerContext {
[INFO] [stdout]    |        ----------------- field in this struct
[INFO] [stdout] 93 |     trace_id: [u8; 16],
[INFO] [stdout] 94 |     span_id: u64
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NoopTracerContext` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.52s
[INFO] running `Command { std: "docker" "inspect" "953a1fc582e03a405024870fd99a53274d5a92d7c23d1711ad6e6f98fed64b92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "953a1fc582e03a405024870fd99a53274d5a92d7c23d1711ad6e6f98fed64b92", kill_on_drop: false }`
[INFO] [stdout] 953a1fc582e03a405024870fd99a53274d5a92d7c23d1711ad6e6f98fed64b92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7cb98443f22162782bef6d0128d693ab372839fb9df5e79a8ff2a91aec556a0d
[INFO] running `Command { std: "docker" "start" "-a" "7cb98443f22162782bef6d0128d693ab372839fb9df5e79a8ff2a91aec556a0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling opentracingrust v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `span_id` is never read
[INFO] [stdout]   --> src/tracers/noop.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | struct NoopTracerContext {
[INFO] [stdout]    |        ----------------- field in this struct
[INFO] [stdout] 93 |     trace_id: [u8; 16],
[INFO] [stdout] 94 |     span_id: u64
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NoopTracerContext` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span_id` is never read
[INFO] [stdout]   --> src/tracers/noop.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | struct NoopTracerContext {
[INFO] [stdout]    |        ----------------- field in this struct
[INFO] [stdout] 93 |     trace_id: [u8; 16],
[INFO] [stdout] 94 |     span_id: u64
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NoopTracerContext` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `Command { std: "docker" "inspect" "7cb98443f22162782bef6d0128d693ab372839fb9df5e79a8ff2a91aec556a0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cb98443f22162782bef6d0128d693ab372839fb9df5e79a8ff2a91aec556a0d", kill_on_drop: false }`
[INFO] [stdout] 7cb98443f22162782bef6d0128d693ab372839fb9df5e79a8ff2a91aec556a0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e7e4b3f38251be986eaa8fb033c7a0005dd7067562b8a387d62f6324d58eba8
[INFO] running `Command { std: "docker" "start" "-a" "5e7e4b3f38251be986eaa8fb033c7a0005dd7067562b8a387d62f6324d58eba8", kill_on_drop: false }`
[INFO] [stderr] warning: field `span_id` is never read
[INFO] [stderr]   --> src/tracers/noop.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 92 | struct NoopTracerContext {
[INFO] [stderr]    |        ----------------- field in this struct
[INFO] [stderr] 93 |     trace_id: [u8; 16],
[INFO] [stderr] 94 |     span_id: u64
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `NoopTracerContext` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `opentracingrust` (lib) generated 1 warning
[INFO] [stderr] warning: `opentracingrust` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/opentracingrust-4563a5167219459c)
[INFO] [stdout] 
[INFO] [stdout] running 67 tests
[INFO] [stdout] test carrier::tests::hash_map::extract_keys ... ok
[INFO] [stdout] test carrier::tests::hash_map::find_keys ... ok
[INFO] [stdout] test carrier::tests::hash_map::inject_keys ... ok
[INFO] [stdout] test carrier::tests::tree_map::extract_keys ... ok
[INFO] [stdout] test carrier::tests::tree_map::find_keys ... ok
[INFO] [stdout] test carrier::tests::tree_map::inject_keys ... ok
[INFO] [stdout] test span::log::tests::add_field ... ok
[INFO] [stdout] test span::log::tests::defults_to_no_time ... ok
[INFO] [stdout] test span::log::tests::set_default_timestamp ... ok
[INFO] [stdout] test span::log::tests::set_log_timestamp ... ok
[INFO] [stdout] test span::tag::tests::get_missing_tag ... ok
[INFO] [stdout] test span::tag::tests::iterate_over_tags ... ok
[INFO] [stdout] test span::tag::tests::set_tag ... ok
[INFO] [stdout] test span::tests::autoclose_finish_span_on_drop ... ok
[INFO] [stdout] test span::tests::autofinish_as_mut ... ok
[INFO] [stdout] test span::tests::autofinish_deref ... ok
[INFO] [stdout] test span::tests::references::child_of ... ok
[INFO] [stdout] test span::tests::references::multi_refs ... ok
[INFO] [stdout] test span::tests::set_span_name ... ok
[INFO] [stdout] test span::tests::references::follows ... ok
[INFO] [stdout] test span::tests::span_follows_another ... ok
[INFO] [stdout] test span::tests::start_span_on_creation ... ok
[INFO] [stdout] test span::tests::span_child_of_another ... ok
[INFO] [stdout] test span::tests::tags::add_bool_tag ... ok
[INFO] [stdout] test span_context::impl_context::tests::clone_context ... ok
[INFO] [stdout] test span_context::impl_context::tests::unwrap_context ... ok
[INFO] [stdout] test span::tests::tags::add_integer_tag ... ok
[INFO] [stdout] test span_context::tests::extract_implementation_context ... ok
[INFO] [stdout] test span_context::tests::set_baggage_item ... ok
[INFO] [stdout] test span::tests::times::starts_now_by_default ... ok
[INFO] [stdout] test tracer::tests::create_span ... ok
[INFO] [stdout] test span_context::tests::clone_span_context ... ok
[INFO] [stdout] test span_context::tests::debug_formatting ... ok
[INFO] [stdout] test span::tests::send_span_on_finish ... ok
[INFO] [stdout] test span::tests::tags::add_string_tag ... ok
[INFO] [stdout] test span::tests::times::finish_span_at_finish_time ... ok
[INFO] [stdout] test span::tests::tags::add_generic_tag ... ok
[INFO] [stdout] test tracer::tests::extract_binary ... ok
[INFO] [stdout] test tracer::tests::extract_http_headers ... ok
[INFO] [stdout] test tracer::tests::extract_textmap ... ok
[INFO] [stdout] test tracer::tests::inject_binary ... ok
[INFO] [stdout] test span::tests::times::start_time_set ... ok
[INFO] [stdout] test span::tests::times::finish_span_on_finish ... ok
[INFO] [stdout] test tracers::file::tests::span::create ... ok
[INFO] [stdout] test tracer::tests::inject_http_headers ... ok
[INFO] [stdout] test span::tests::tags::add_str_tag ... ok
[INFO] [stdout] test span::tests::tags::add_float_tag ... ok
[INFO] [stdout] test tracer::tests::inject_textmap ... ok
[INFO] [stdout] test tracers::file::tests::span::extract::invalid::fails_if_invalid_span_id ... ok
[INFO] [stdout] test tracers::file::tests::span::extract::invalid::fails_if_invalid_trace_id ... ok
[INFO] [stdout] test tracers::file::tests::span::extract::invalid::returns_none_without_span_id ... ok
[INFO] [stdout] test tracers::file::tests::span::extract::http_headers ... ok
[INFO] [stdout] test tracers::file::tests::span::inject::http_headers ... ok
[INFO] [stdout] test tracers::file::tests::span::extract::invalid::returns_none_without_trace_id ... ok
[INFO] [stdout] test tracers::noop::tests::inner_context::child_of_updates_trace_id ... ok
[INFO] [stdout] test tracers::noop::tests::inner_context::follows_updates_trace_id ... ok
[INFO] [stdout] test tracers::file::tests::span::inject::text_map ... ok
[INFO] [stdout] test tracers::file::tests::span::write ... ok
[INFO] [stdout] test utils::fail::tests::fail_spans ... ok
[INFO] [stdout] test utils::global_tracer::tests::tracer_is_returned ... ok
[INFO] [stdout] test tracers::file::tests::span::extract::binary_not_supported - should panic ... ok
[INFO] [stdout] test tracers::file::tests::span::inject::binary_not_supported - should panic ... ok
[INFO] [stdout] test utils::global_tracer::tests::tracer_cannot_be_set_twice - should panic ... ok
[INFO] [stdout] test tracers::noop::tests::inner_context::panics_if_invalid_context - should panic ... ok
[INFO] [stdout] test utils::global_tracer::tests::tracer_must_be_set - should panic ... ok
[INFO] [stdout] test utils::global_tracer::tests::tracer_is_returned_to_many_threads ... ok
[INFO] [stdout] test utils::reporter::tests::receive_span ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 67 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests opentracingrust
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test src/carrier.rs - carrier::ExtractFormat (line 13) ... ok
[INFO] [stdout] test src/carrier.rs - carrier::InjectFormat (line 43) ... ok
[INFO] [stdout] test src/span_context/impl_context.rs - span_context::impl_context::ImplContext (line 27) ... ok
[INFO] [stdout] test src/tracers/noop.rs - tracers::noop::NoopTracer (line 35) ... ok
[INFO] [stdout] test src/span/mod.rs - span::Span::tag (line 300) ... ok
[INFO] [stdout] test src/span/mod.rs - span::StartOptions (line 350) ... ok
[INFO] [stdout] test src/utils/fail.rs - utils::fail::FailSpan (line 13) ... ok
[INFO] [stdout] test src/span_context/mod.rs - span_context::SpanContext (line 39) ... ok
[INFO] [stdout] test src/utils/global_tracer.rs - utils::global_tracer::GlobalTracer (line 29) ... ok
[INFO] [stdout] test src/span/log.rs - span::log::Log (line 17) ... ok
[INFO] [stdout] test src/span_context/impl_context.rs - span_context::impl_context::ImplContextBox (line 108) ... ok
[INFO] [stdout] test src/lib.rs - (line 102) ... ok
[INFO] [stdout] test src/lib.rs - (line 68) ... ok
[INFO] [stdout] test src/tracers/file.rs - tracers::file::FileTracer (line 42) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.04s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5e7e4b3f38251be986eaa8fb033c7a0005dd7067562b8a387d62f6324d58eba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e7e4b3f38251be986eaa8fb033c7a0005dd7067562b8a387d62f6324d58eba8", kill_on_drop: false }`
[INFO] [stdout] 5e7e4b3f38251be986eaa8fb033c7a0005dd7067562b8a387d62f6324d58eba8