[INFO] fetching crate jsonway 2.0.0...
[INFO] testing jsonway-2.0.0 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate jsonway 2.0.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate jsonway 2.0.0 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsonway 2.0.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate jsonway 2.0.0
[INFO] tweaked toml for crates.io crate jsonway 2.0.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", 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] a8e4ade98154ae7c4882f194e9823f78422b2f52e75f534381a9dfca6d8be18c
[INFO] running `Command { std: "docker" "start" "-a" "a8e4ade98154ae7c4882f194e9823f78422b2f52e75f534381a9dfca6d8be18c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8e4ade98154ae7c4882f194e9823f78422b2f52e75f534381a9dfca6d8be18c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8e4ade98154ae7c4882f194e9823f78422b2f52e75f534381a9dfca6d8be18c", kill_on_drop: false }`
[INFO] [stdout] a8e4ade98154ae7c4882f194e9823f78422b2f52e75f534381a9dfca6d8be18c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d50bb66cc83d8e8256e084b19eb550a2024330c8e389f6678f2825c4a169ee2a
[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" "d50bb66cc83d8e8256e084b19eb550a2024330c8e389f6678f2825c4a169ee2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling jsonway v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/serializer.rs:36:21
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn build(&self, &mut object_builder::ObjectBuilder);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut object_builder::ObjectBuilder`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:2:9
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(anonymous_parameters)]` implied by `#[deny(warnings)]`
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/serializer.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn build(&self, &T, &mut object_builder::ObjectBuilder);
[INFO] [stdout]    |                     ^^ help: try naming the parameter or explicitly ignoring it: `_: &T`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/serializer.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn build(&self, &T, &mut object_builder::ObjectBuilder);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut object_builder::ObjectBuilder`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/serializer.rs:154:21
[INFO] [stdout]     |
[INFO] [stdout] 154 |     fn build(&self, &T, &S, &mut object_builder::ObjectBuilder);
[INFO] [stdout]     |                     ^^ help: try naming the parameter or explicitly ignoring it: `_: &T`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/serializer.rs:154:25
[INFO] [stdout]     |
[INFO] [stdout] 154 |     fn build(&self, &T, &S, &mut object_builder::ObjectBuilder);
[INFO] [stdout]     |                         ^^ help: try naming the parameter or explicitly ignoring it: `_: &S`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/serializer.rs:154:29
[INFO] [stdout]     |
[INFO] [stdout] 154 |     fn build(&self, &T, &S, &mut object_builder::ObjectBuilder);
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut object_builder::ObjectBuilder`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/array_serializer.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn build(&self, &mut array_builder::ArrayBuilder);
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut array_builder::ArrayBuilder`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jsonway`
[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" "d50bb66cc83d8e8256e084b19eb550a2024330c8e389f6678f2825c4a169ee2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d50bb66cc83d8e8256e084b19eb550a2024330c8e389f6678f2825c4a169ee2a", kill_on_drop: false }`
[INFO] [stdout] d50bb66cc83d8e8256e084b19eb550a2024330c8e389f6678f2825c4a169ee2a