[INFO] fetching crate opentracingrust 0.4.0... [INFO] checking opentracingrust-0.4.0 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864 [INFO] extracting crate opentracingrust 0.4.0 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate opentracingrust 0.4.0 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "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-4-tc1/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" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded crossbeam-channel v0.4.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c1f61001cfb45bac52390f9d3ce228bd3fa931eaf42513a70c0033841a542ebe [INFO] running `Command { std: "docker" "start" "-a" "c1f61001cfb45bac52390f9d3ce228bd3fa931eaf42513a70c0033841a542ebe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c1f61001cfb45bac52390f9d3ce228bd3fa931eaf42513a70c0033841a542ebe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c1f61001cfb45bac52390f9d3ce228bd3fa931eaf42513a70c0033841a542ebe", kill_on_drop: false }` [INFO] [stdout] c1f61001cfb45bac52390f9d3ce228bd3fa931eaf42513a70c0033841a542ebe [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5c4e0cf4ec9b287bc743b71f91c9ac80c8be3c9498e58054d7b3c42c1f5279d4 [INFO] running `Command { std: "docker" "start" "-a" "5c4e0cf4ec9b287bc743b71f91c9ac80c8be3c9498e58054d7b3c42c1f5279d4", kill_on_drop: false }` [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] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Checking crossbeam-channel v0.4.2 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking 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: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/utils/global_tracer.rs:70:26 [INFO] [stdout] | [INFO] [stdout] 70 | let tracer = GLOBAL_TRACER.as_ref() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings 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: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/utils/global_tracer.rs:70:26 [INFO] [stdout] | [INFO] [stdout] 70 | let tracer = GLOBAL_TRACER.as_ref() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.17s [INFO] running `Command { std: "docker" "inspect" "5c4e0cf4ec9b287bc743b71f91c9ac80c8be3c9498e58054d7b3c42c1f5279d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5c4e0cf4ec9b287bc743b71f91c9ac80c8be3c9498e58054d7b3c42c1f5279d4", kill_on_drop: false }` [INFO] [stdout] 5c4e0cf4ec9b287bc743b71f91c9ac80c8be3c9498e58054d7b3c42c1f5279d4