[INFO] crate opentelemetry_api 0.1.0 is already in cache [INFO] extracting crate opentelemetry_api 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/opentelemetry_api/0.1.0 [INFO] extracting crate opentelemetry_api 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/opentelemetry_api/0.1.0 [INFO] validating manifest of opentelemetry_api-0.1.0 on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of opentelemetry_api-0.1.0 on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing opentelemetry_api-0.1.0 [INFO] finished frobbing opentelemetry_api-0.1.0 [INFO] frobbed toml for opentelemetry_api-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/opentelemetry_api/0.1.0/Cargo.toml [INFO] started frobbing opentelemetry_api-0.1.0 [INFO] finished frobbing opentelemetry_api-0.1.0 [INFO] frobbed toml for opentelemetry_api-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/opentelemetry_api/0.1.0/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] testing opentelemetry_api-0.1.0 against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/opentelemetry_api/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"` [INFO] [stdout] c7f4088486b0e1657dda8e565b01ac52830fb091da323de08f4b7aef2c72220f [INFO] running `"docker" "start" "-a" "c7f4088486b0e1657dda8e565b01ac52830fb091da323de08f4b7aef2c72220f"` [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling opentelemetry_api v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::borrow::Cow` [INFO] [stderr] --> src/trace/tracer.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::borrow::Cow; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: patterns aren't allowed in methods without bodies [INFO] [stderr] --> src/context/mod.rs:2:14 [INFO] [stderr] | [INFO] [stderr] 2 | fn close(mut self); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(patterns_in_fns_without_body)] on by default [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #35203 [INFO] [stderr] [INFO] [stderr] warning: unused variable: `measurements` [INFO] [stderr] --> src/metric/meter.rs:177:29 [INFO] [stderr] | [INFO] [stderr] 177 | fn record(&mut self, measurements: I) where I: IntoIterator { [INFO] [stderr] | ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_measurements` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/metric/measure.rs:92:31 [INFO] [stderr] | [INFO] [stderr] 92 | fn double_measurement<'a>(value: f64) -> Self::Measurement { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_value` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/metric/measure.rs:96:29 [INFO] [stderr] | [INFO] [stderr] 96 | fn long_measurement<'a>(value: i64) -> Self::Measurement { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_value` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `builder` [INFO] [stderr] --> src/metric/measure.rs:100:14 [INFO] [stderr] | [INFO] [stderr] 100 | fn build(builder: MeasureBuilder) -> Result where Self: Sized { [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_builder` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/metric/measure.rs:78:18 [INFO] [stderr] | [INFO] [stderr] 78 | pub fn build(mut self) -> Result { [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/trace/trace_state.rs:79:13 [INFO] [stderr] | [INFO] [stderr] 79 | let mut entries = self.entries.get_or_insert(self.parent.map_or(vec![], |x| x.entries.clone())); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/trace/trace_state.rs:90:13 [INFO] [stderr] | [INFO] [stderr] 90 | let mut entries = self.entries.get_or_insert(self.parent.map_or(vec![], |x| x.entries.clone())); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.60s [INFO] running `"docker" "inspect" "c7f4088486b0e1657dda8e565b01ac52830fb091da323de08f4b7aef2c72220f"` [INFO] running `"docker" "rm" "-f" "c7f4088486b0e1657dda8e565b01ac52830fb091da323de08f4b7aef2c72220f"` [INFO] [stdout] c7f4088486b0e1657dda8e565b01ac52830fb091da323de08f4b7aef2c72220f [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/opentelemetry_api/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 9ae631bd260b73c086c5b61a2095da3bb36fa6d135a621d2a84e89b1b3953ebe [INFO] running `"docker" "start" "-a" "9ae631bd260b73c086c5b61a2095da3bb36fa6d135a621d2a84e89b1b3953ebe"` [INFO] [stderr] Compiling proptest v0.9.4 [INFO] [stderr] Compiling opentelemetry_api v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::borrow::Cow` [INFO] [stderr] --> src/trace/tracer.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::borrow::Cow; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: patterns aren't allowed in methods without bodies [INFO] [stderr] --> src/context/mod.rs:2:14 [INFO] [stderr] | [INFO] [stderr] 2 | fn close(mut self); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(patterns_in_fns_without_body)] on by default [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #35203 [INFO] [stderr] [INFO] [stderr] warning: unused variable: `measurements` [INFO] [stderr] --> src/metric/meter.rs:177:29 [INFO] [stderr] | [INFO] [stderr] 177 | fn record(&mut self, measurements: I) where I: IntoIterator { [INFO] [stderr] | ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_measurements` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `counter` [INFO] [stderr] --> src/metric/meter.rs:189:13 [INFO] [stderr] | [INFO] [stderr] 189 | let counter = m.counter_long("test").build().unwrap(); [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_counter` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/metric/measure.rs:92:31 [INFO] [stderr] | [INFO] [stderr] 92 | fn double_measurement<'a>(value: f64) -> Self::Measurement { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_value` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/metric/measure.rs:96:29 [INFO] [stderr] | [INFO] [stderr] 96 | fn long_measurement<'a>(value: i64) -> Self::Measurement { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_value` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `builder` [INFO] [stderr] --> src/metric/measure.rs:100:14 [INFO] [stderr] | [INFO] [stderr] 100 | fn build(builder: MeasureBuilder) -> Result where Self: Sized { [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_builder` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/metric/measure.rs:78:18 [INFO] [stderr] | [INFO] [stderr] 78 | pub fn build(mut self) -> Result { [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/trace/trace_state.rs:79:13 [INFO] [stderr] | [INFO] [stderr] 79 | let mut entries = self.entries.get_or_insert(self.parent.map_or(vec![], |x| x.entries.clone())); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/trace/trace_state.rs:90:13 [INFO] [stderr] | [INFO] [stderr] 90 | let mut entries = self.entries.get_or_insert(self.parent.map_or(vec![], |x| x.entries.clone())); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 25.98s [INFO] running `"docker" "inspect" "9ae631bd260b73c086c5b61a2095da3bb36fa6d135a621d2a84e89b1b3953ebe"` [INFO] running `"docker" "rm" "-f" "9ae631bd260b73c086c5b61a2095da3bb36fa6d135a621d2a84e89b1b3953ebe"` [INFO] [stdout] 9ae631bd260b73c086c5b61a2095da3bb36fa6d135a621d2a84e89b1b3953ebe [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/opentelemetry_api/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"` [INFO] [stdout] 6fff8432b6e0facd85d292b56e2a13946410327a76a24eac1b9eeeec779f3bca [INFO] running `"docker" "start" "-a" "6fff8432b6e0facd85d292b56e2a13946410327a76a24eac1b9eeeec779f3bca"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running /opt/crater/target/debug/deps/opentelemetry_api-aabfda010a0a742b [INFO] [stdout] [INFO] [stdout] running 21 tests [INFO] [stdout] test resource::tests::test_create_macro ... ok [INFO] [stdout] test resource::tests::test_create ... ok [INFO] [stdout] test metric::meter::tests::test_noops ... ok [INFO] [stdout] test metric::test::test_x ... ok [INFO] [stdout] test distributedcontext::entry::tests::test_invalid_entry_key ... ok [INFO] [stdout] test resource::tests::test_labels ... ok [INFO] [stdout] test resource::tests::test_merge_resources ... ok [INFO] [stdout] test trace::attribute_value::tests::test_str_from ... ok [INFO] [stdout] test internal::tests::test_internal_validate_str ... ok [INFO] [stdout] test resource::tests::test_invalid_resource_key_ascii ... ok [INFO] [stdout] test trace::trace_state::test::test_validate_key_incorrect_alphabet ... ok [INFO] [stdout] test resource::tests::test_invalud_resource_value_ascii ... ok [INFO] [stdout] test trace::trace_state::test::test_validate_key_correct_alphabet ... ok [INFO] [stdout] test trace::trace_state::test::test_validate_value_incorrect_alphabets ... ok [INFO] [stdout] test trace::trace_state::test::test_validate_value_correct_alphabet ... ok [INFO] [stdout] test distributedcontext::entry::tests::test_invalid_entry_key_len ... ok [INFO] [stdout] test internal::tests::test_internal_validate_str_len ... ok [INFO] [stdout] test trace::trace_state::test::test_validate_key_alphabets_too_long ... ok [INFO] [stdout] test resource::tests::test_invalud_resource_value_len ... ok [INFO] [stdout] test resource::tests::test_invalid_resource_key_len ... ok [INFO] [stdout] test trace::trace_state::test::test_validate_value_alphabets_too_long ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests opentelemetry_api [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test src/metric/meter.rs - metric::meter::Meter (line 80) ... ok [INFO] [stdout] test src/metric/meter.rs - metric::meter::Meter (line 23) ... ok [INFO] [stdout] test src/metric/meter.rs - metric::meter::Meter (line 46) ... ok [INFO] [stdout] test src/resource.rs - resource (line 109) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "6fff8432b6e0facd85d292b56e2a13946410327a76a24eac1b9eeeec779f3bca"` [INFO] running `"docker" "rm" "-f" "6fff8432b6e0facd85d292b56e2a13946410327a76a24eac1b9eeeec779f3bca"` [INFO] [stdout] 6fff8432b6e0facd85d292b56e2a13946410327a76a24eac1b9eeeec779f3bca