[INFO] fetching crate stan 0.0.16...
[INFO] testing stan-0.0.16 against 1.90.0 for beta-1.91-3
[INFO] extracting crate stan 0.0.16 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate stan 0.0.16
[INFO] finished tweaking crates.io crate stan 0.0.16
[INFO] tweaked toml for crates.io crate stan 0.0.16 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stan 0.0.16 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate stan 0.0.16 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "1ed5deba8c802d0b0b8d9ca88f8f7dbe930faf369f658d0b7fefac6244afe322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ed5deba8c802d0b0b8d9ca88f8f7dbe930faf369f658d0b7fefac6244afe322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ed5deba8c802d0b0b8d9ca88f8f7dbe930faf369f658d0b7fefac6244afe322", kill_on_drop: false }`
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[INFO] [stdout] 05625e81e3dbda7e5fea3028d54793e3f1d800d5a580f81ee5db1f3a3eb5d83c
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[INFO] [stdout] warning: field `client` is never read
[INFO] [stdout]    --> src/lib.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub struct Subscription {
[INFO] [stdout]     |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     client: Client,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Subscription` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ping` is never constructed
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/stan-4c33c14c4fa45482/out/stan.nats_streaming.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub struct Ping {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PingResponse` is never constructed
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/stan-4c33c14c4fa45482/out/stan.nats_streaming.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub struct PingResponse {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.23s
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[INFO] running `Command { std: "docker" "rm" "-f" "05625e81e3dbda7e5fea3028d54793e3f1d800d5a580f81ee5db1f3a3eb5d83c", kill_on_drop: false }`
[INFO] [stdout] 05625e81e3dbda7e5fea3028d54793e3f1d800d5a580f81ee5db1f3a3eb5d83c
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d4a1bb74cad8bafc46ce0e6be5be2eb9c288cc9fa9409c7ac7168867832561b
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[INFO] [stderr]    Compiling prost-build v0.7.0
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[INFO] [stderr]    Compiling stan v0.0.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `client` is never read
[INFO] [stdout]    --> src/lib.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub struct Subscription {
[INFO] [stdout]     |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     client: Client,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Subscription` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ping` is never constructed
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/stan-e7c5cded597cb470/out/stan.nats_streaming.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub struct Ping {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PingResponse` is never constructed
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/stan-e7c5cded597cb470/out/stan.nats_streaming.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub struct PingResponse {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `client` is never read
[INFO] [stdout]    --> src/lib.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub struct Subscription {
[INFO] [stdout]     |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     client: Client,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Subscription` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ping` is never constructed
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/stan-e7c5cded597cb470/out/stan.nats_streaming.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub struct Ping {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PingResponse` is never constructed
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/stan-e7c5cded597cb470/out/stan.nats_streaming.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub struct PingResponse {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 27.79s
[INFO] running `Command { std: "docker" "inspect" "6d4a1bb74cad8bafc46ce0e6be5be2eb9c288cc9fa9409c7ac7168867832561b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d4a1bb74cad8bafc46ce0e6be5be2eb9c288cc9fa9409c7ac7168867832561b", kill_on_drop: false }`
[INFO] [stdout] 6d4a1bb74cad8bafc46ce0e6be5be2eb9c288cc9fa9409c7ac7168867832561b
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d95a46e2bc9c7d8bb1becedecb77198db8e67e01ac5b257a1787df4ca2b15506
[INFO] running `Command { std: "docker" "start" "-a" "d95a46e2bc9c7d8bb1becedecb77198db8e67e01ac5b257a1787df4ca2b15506", kill_on_drop: false }`
[INFO] [stderr] warning: field `client` is never read
[INFO] [stderr]    --> src/lib.rs:164:5
[INFO] [stderr]     |
[INFO] [stderr] 157 | pub struct Subscription {
[INFO] [stderr]     |            ------------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 164 |     client: Client,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Subscription` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ping` is never constructed
[INFO] [stderr]    --> /opt/rustwide/target/debug/build/stan-e7c5cded597cb470/out/stan.nats_streaming.rs:135:12
[INFO] [stderr]     |
[INFO] [stderr] 135 | pub struct Ping {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `PingResponse` is never constructed
[INFO] [stderr]    --> /opt/rustwide/target/debug/build/stan-e7c5cded597cb470/out/stan.nats_streaming.rs:142:12
[INFO] [stderr]     |
[INFO] [stderr] 142 | pub struct PingResponse {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `stan` (lib) generated 3 warnings
[INFO] [stderr] warning: `stan` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stan-7ac7f9722c2e27d9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/stan-fa0f6a7cadace73c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/drop_tests.rs (/opt/rustwide/target/debug/deps/drop_tests-cf9964d81a8ad969)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_client_drop has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "d95a46e2bc9c7d8bb1becedecb77198db8e67e01ac5b257a1787df4ca2b15506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d95a46e2bc9c7d8bb1becedecb77198db8e67e01ac5b257a1787df4ca2b15506", kill_on_drop: false }`
[INFO] [stdout] d95a46e2bc9c7d8bb1becedecb77198db8e67e01ac5b257a1787df4ca2b15506