[INFO] fetching crate jsonrpc-derive 16.0.0...
[INFO] checking jsonrpc-derive-16.0.0 against try#bb9dbf1d07454a99066eabaabd5819851281494b for pr-80920
[INFO] extracting crate jsonrpc-derive 16.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate jsonrpc-derive 16.0.0 on toolchain bb9dbf1d07454a99066eabaabd5819851281494b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsonrpc-derive 16.0.0
[INFO] finished tweaking crates.io crate jsonrpc-derive 16.0.0
[INFO] tweaked toml for crates.io crate jsonrpc-derive 16.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate jsonrpc-derive 16.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trybuild v1.0.37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f258b6ccfcd1b30d520ac6d188875567403c2d517078449229fcb1a198b3bff4
[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" "f258b6ccfcd1b30d520ac6d188875567403c2d517078449229fcb1a198b3bff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f258b6ccfcd1b30d520ac6d188875567403c2d517078449229fcb1a198b3bff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f258b6ccfcd1b30d520ac6d188875567403c2d517078449229fcb1a198b3bff4", kill_on_drop: false }`
[INFO] [stdout] f258b6ccfcd1b30d520ac6d188875567403c2d517078449229fcb1a198b3bff4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] edbc3e90fea428076fd261479df387fe90aca580c5040c3b0fe3c16d1bcbd7a5
[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" "edbc3e90fea428076fd261479df387fe90aca580c5040c3b0fe3c16d1bcbd7a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling trybuild v1.0.37
[INFO] [stderr]     Checking assert_matches v1.4.0
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking proc-macro-crate v0.1.5
[INFO] [stderr]     Checking jsonrpc-derive v16.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking jsonrpc-core v16.0.0
[INFO] [stderr]     Checking jsonrpc-pubsub v16.0.0
[INFO] [stderr]     Checking jsonrpc-server-utils v16.0.0
[INFO] [stderr]     Checking jsonrpc-tcp-server v16.0.0
[INFO] [stderr]     Checking jsonrpc-client-transports v16.0.0
[INFO] [stderr]     Checking jsonrpc-core-client v16.0.0
[INFO] [stdout] warning: unused variable: `server`
[INFO] [stdout]   --> examples/client-local.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 |             server = server => {},
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `client`
[INFO] [stdout]   --> examples/client-local.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 |             client = client => {},
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_client`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 35s
[INFO] running `Command { std: "docker" "inspect" "edbc3e90fea428076fd261479df387fe90aca580c5040c3b0fe3c16d1bcbd7a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edbc3e90fea428076fd261479df387fe90aca580c5040c3b0fe3c16d1bcbd7a5", kill_on_drop: false }`
[INFO] [stdout] edbc3e90fea428076fd261479df387fe90aca580c5040c3b0fe3c16d1bcbd7a5