[INFO] fetching crate opentracingrust 0.4.0...
[INFO] checking opentracingrust-0.4.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate opentracingrust 0.4.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate opentracingrust 0.4.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-0/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: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb6226f5fba8af493713e0d6c0fd281fa1d9d71f90eddee4bd388ad7fb39edbc
[INFO] running `Command { std: "docker" "start" "-a" "fb6226f5fba8af493713e0d6c0fd281fa1d9d71f90eddee4bd388ad7fb39edbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb6226f5fba8af493713e0d6c0fd281fa1d9d71f90eddee4bd388ad7fb39edbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb6226f5fba8af493713e0d6c0fd281fa1d9d71f90eddee4bd388ad7fb39edbc", kill_on_drop: false }`
[INFO] [stdout] fb6226f5fba8af493713e0d6c0fd281fa1d9d71f90eddee4bd388ad7fb39edbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6aa32d514f52463c2f81d023aad07f4c1bb28aa07dc67315c8fb0e31491af999
[INFO] running `Command { std: "docker" "start" "-a" "6aa32d514f52463c2f81d023aad07f4c1bb28aa07dc67315c8fb0e31491af999", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking getrandom v0.1.14
[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 crossbeam-channel v0.4.2
[INFO] [stderr]     Checking opentracingrust v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `span_id`
[INFO] [stdout]   --> src/tracers/noop.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     span_id: u64
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[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 is never read: `span_id`
[INFO] [stdout]   --> src/tracers/noop.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     span_id: u64
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[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 5.90s
[INFO] running `Command { std: "docker" "inspect" "6aa32d514f52463c2f81d023aad07f4c1bb28aa07dc67315c8fb0e31491af999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aa32d514f52463c2f81d023aad07f4c1bb28aa07dc67315c8fb0e31491af999", kill_on_drop: false }`
[INFO] [stdout] 6aa32d514f52463c2f81d023aad07f4c1bb28aa07dc67315c8fb0e31491af999