[INFO] fetching crate nats 0.7.4...
[INFO] checking nats-0.7.4 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate nats 0.7.4 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate nats 0.7.4 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nats 0.7.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate nats 0.7.4
[INFO] tweaked toml for crates.io crate nats 0.7.4 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate nats 0.7.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8cb573ed0cc1c8884ba946f8245e98277a5a4c46541e34f0f6efd138f530d38c
[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" "8cb573ed0cc1c8884ba946f8245e98277a5a4c46541e34f0f6efd138f530d38c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cb573ed0cc1c8884ba946f8245e98277a5a4c46541e34f0f6efd138f530d38c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cb573ed0cc1c8884ba946f8245e98277a5a4c46541e34f0f6efd138f530d38c", kill_on_drop: false }`
[INFO] [stdout] 8cb573ed0cc1c8884ba946f8245e98277a5a4c46541e34f0f6efd138f530d38c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa867fc8d4e34e99b245f7a9820af2d5ed55ee2da2a35fb60de3b774cf5322cf
[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" "fa867fc8d4e34e99b245f7a9820af2d5ed55ee2da2a35fb60de3b774cf5322cf", kill_on_drop: false }`
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[INFO] [stderr]     Checking nats v0.7.4 (/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: 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: 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] 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 type or module `nats_test_server`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `with_nkey` found for struct `Options` in the current scope
[INFO] [stdout]   --> examples/new-client.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut nc = nats::Options::with_nkey(public_key, move |nonce| kp.sign(nonce).unwrap());
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 function or associated item not found in `Options`
[INFO] [stdout]    |                                 help: there is an associated function with a similar name: `with_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[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] [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: build failed
[INFO] running `Command { std: "docker" "inspect" "fa867fc8d4e34e99b245f7a9820af2d5ed55ee2da2a35fb60de3b774cf5322cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa867fc8d4e34e99b245f7a9820af2d5ed55ee2da2a35fb60de3b774cf5322cf", kill_on_drop: false }`
[INFO] [stdout] fa867fc8d4e34e99b245f7a9820af2d5ed55ee2da2a35fb60de3b774cf5322cf
