[INFO] fetching crate opentracing-rs 0.1.2...
[INFO] checking opentracing-rs-0.1.2 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate opentracing-rs 0.1.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate opentracing-rs 0.1.2 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate opentracing-rs 0.1.2
[INFO] finished tweaking crates.io crate opentracing-rs 0.1.2
[INFO] tweaked toml for crates.io crate opentracing-rs 0.1.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded opentracing-rs-jaeger v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b043ba3f68b2e65fccb8ab459fa120ccccc2437139a3d1fc472ae577285368f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4b043ba3f68b2e65fccb8ab459fa120ccccc2437139a3d1fc472ae577285368f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b043ba3f68b2e65fccb8ab459fa120ccccc2437139a3d1fc472ae577285368f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b043ba3f68b2e65fccb8ab459fa120ccccc2437139a3d1fc472ae577285368f", kill_on_drop: false }`
[INFO] [stdout] 4b043ba3f68b2e65fccb8ab459fa120ccccc2437139a3d1fc472ae577285368f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 786ae045000aed838bc9dc74d7b0d62df5661ee6b830b570c1e543f61bf369dc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "786ae045000aed838bc9dc74d7b0d62df5661ee6b830b570c1e543f61bf369dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking opentracing-rs-core v0.1.0
[INFO] [stderr]     Checking opentracing-rs-jaeger v0.1.0
[INFO] [stderr]     Checking opentracing-rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `opentracing_rs::jaeger::TransportProtocol`
[INFO] [stdout]   --> examples/jaeger.rs:10:38
[INFO] [stdout]    |
[INFO] [stdout] 10 |     jaeger::{Tracer as JaegerTracer, TransportProtocol},
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^ no `TransportProtocol` in `jaeger`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `builder` found for struct `opentracing_rs::opentracing_rs_jaeger::Tracer<_, _>` in the current scope
[INFO] [stdout]   --> examples/jaeger.rs:16:40
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut tracer = JaegerTracer::builder()
[INFO] [stdout]    |                                        ^^^^^^^ function or associated item not found in `opentracing_rs::opentracing_rs_jaeger::Tracer<_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SpanBuilder`
[INFO] [stdout]   --> examples/jaeger.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     SpanBuilder, Tracer,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Tracer`
[INFO] [stdout]   --> examples/jaeger.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 |     SpanBuilder, Tracer,
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `opentracing-rs`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "786ae045000aed838bc9dc74d7b0d62df5661ee6b830b570c1e543f61bf369dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "786ae045000aed838bc9dc74d7b0d62df5661ee6b830b570c1e543f61bf369dc", kill_on_drop: false }`
[INFO] [stdout] 786ae045000aed838bc9dc74d7b0d62df5661ee6b830b570c1e543f61bf369dc