[INFO] fetching crate nats 0.8.0...
[INFO] checking nats-0.8.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate nats 0.8.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate nats 0.8.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nats 0.8.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate nats 0.8.0
[INFO] tweaked toml for crates.io crate nats 0.8.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate nats 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]   Downloaded futures-lite v1.4.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f273cbccdd9b3d9208573f264aa8546715acd6ef108d3c991d743f3e3e7c4f5b
[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" "f273cbccdd9b3d9208573f264aa8546715acd6ef108d3c991d743f3e3e7c4f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f273cbccdd9b3d9208573f264aa8546715acd6ef108d3c991d743f3e3e7c4f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f273cbccdd9b3d9208573f264aa8546715acd6ef108d3c991d743f3e3e7c4f5b", kill_on_drop: false }`
[INFO] [stdout] f273cbccdd9b3d9208573f264aa8546715acd6ef108d3c991d743f3e3e7c4f5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 95874c2f6651c96f5d2bca96dc7f3391f29e27fa09b1434899e620986aea7fd1
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[INFO] [stderr]     Checking nkeys v0.0.9
[INFO] [stderr]     Checking nats v0.8.0 (/opt/rustwide/workdir)
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/foo.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let mut subscription = nats_conn.subscribe("some-channel").unwrap();
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> examples/new-client.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> examples/new-client.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Connection`, `Options`
[INFO] [stdout]  --> examples/new-client.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nats::{Connection, Options};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nc`
[INFO] [stdout]   --> examples/new-client.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let mut nc = nats::Options::new().connect("demo.nats.io")?;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/repro.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut subscription = nats_conn.subscribe("some-channel").unwrap();
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/new-client.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let mut nc = nats::Options::new().connect("demo.nats.io")?;
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `nats_test_server`
[INFO] [stdout]   --> tests/reconnection.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use nats_test_server::nats_test_server;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^ use of undeclared crate or module `nats_test_server`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nats`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "95874c2f6651c96f5d2bca96dc7f3391f29e27fa09b1434899e620986aea7fd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95874c2f6651c96f5d2bca96dc7f3391f29e27fa09b1434899e620986aea7fd1", kill_on_drop: false }`
[INFO] [stdout] 95874c2f6651c96f5d2bca96dc7f3391f29e27fa09b1434899e620986aea7fd1