[INFO] fetching crate jsonrpc-client-core 0.5.0... [INFO] checking jsonrpc-client-core-0.5.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate jsonrpc-client-core 0.5.0 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate jsonrpc-client-core 0.5.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate jsonrpc-client-core 0.5.0 [INFO] finished tweaking crates.io crate jsonrpc-client-core 0.5.0 [INFO] tweaked toml for crates.io crate jsonrpc-client-core 0.5.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 27 packages [INFO] [stderr] Adding futures v0.1.31 (latest: v0.3.30) [INFO] [stderr] Adding jsonrpc-core v8.0.1 (latest: v18.0.0) [INFO] [stderr] Adding log v0.3.9 (latest: v0.4.21) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded jsonrpc-core v8.0.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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_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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5a01c00a32bb745ccb306e94afb95f187702a409bcf76f0a5dcee657715e3d74 [INFO] running `Command { std: "docker" "start" "-a" "5a01c00a32bb745ccb306e94afb95f187702a409bcf76f0a5dcee657715e3d74", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5a01c00a32bb745ccb306e94afb95f187702a409bcf76f0a5dcee657715e3d74", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5a01c00a32bb745ccb306e94afb95f187702a409bcf76f0a5dcee657715e3d74", kill_on_drop: false }` [INFO] [stdout] 5a01c00a32bb745ccb306e94afb95f187702a409bcf76f0a5dcee657715e3d74 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5a5caa3e3cae7a088b31f77d6a4134868b0d2e122ed1c424d6fe2bbc6229ab57 [INFO] running `Command { std: "docker" "start" "-a" "5a5caa3e3cae7a088b31f77d6a4134868b0d2e122ed1c424d6fe2bbc6229ab57", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Checking gimli v0.28.1 [INFO] [stderr] Checking log v0.4.21 [INFO] [stderr] Checking rustc-demangle v0.1.23 [INFO] [stderr] Checking futures v0.1.31 [INFO] [stderr] Compiling backtrace v0.3.71 [INFO] [stderr] Compiling error-chain v0.12.4 [INFO] [stderr] Checking miniz_oxide v0.7.2 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Checking addr2line v0.21.0 [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking jsonrpc-core v8.0.1 [INFO] [stderr] Checking jsonrpc-client-core v0.5.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `serde` is imported redundantly [INFO] [stdout] --> src/response.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use serde; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:65:1 [INFO] [stdout] | [INFO] [stdout] 65 | extern crate serde; [INFO] [stdout] | ------------------- the item `serde` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> src/response.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:67:1 [INFO] [stdout] | [INFO] [stdout] 67 | extern crate serde_json; [INFO] [stdout] | ------------------------ the item `serde_json` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde` is imported redundantly [INFO] [stdout] --> src/response.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use serde; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:65:1 [INFO] [stdout] | [INFO] [stdout] 65 | extern crate serde; [INFO] [stdout] | ------------------- the item `serde` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> src/response.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:67:1 [INFO] [stdout] | [INFO] [stdout] 67 | extern crate serde_json; [INFO] [stdout] | ------------------------ the item `serde_json` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:266:36 [INFO] [stdout] | [INFO] [stdout] 266 | pub type BoxFuture = Box + Send>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 266 | pub type BoxFuture = Box + Send>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.21s [INFO] running `Command { std: "docker" "inspect" "5a5caa3e3cae7a088b31f77d6a4134868b0d2e122ed1c424d6fe2bbc6229ab57", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5a5caa3e3cae7a088b31f77d6a4134868b0d2e122ed1c424d6fe2bbc6229ab57", kill_on_drop: false }` [INFO] [stdout] 5a5caa3e3cae7a088b31f77d6a4134868b0d2e122ed1c424d6fe2bbc6229ab57 [INFO] checking jsonrpc-client-core-0.5.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate jsonrpc-client-core 0.5.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate jsonrpc-client-core 0.5.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate jsonrpc-client-core 0.5.0 [INFO] finished tweaking crates.io crate jsonrpc-client-core 0.5.0 [INFO] tweaked toml for crates.io crate jsonrpc-client-core 0.5.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] af8185d2535f44fb320a4ef2c6bf6c6111fb89ded7bb2533303d2683fa94f76c [INFO] running `Command { std: "docker" "start" "-a" "af8185d2535f44fb320a4ef2c6bf6c6111fb89ded7bb2533303d2683fa94f76c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "af8185d2535f44fb320a4ef2c6bf6c6111fb89ded7bb2533303d2683fa94f76c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "af8185d2535f44fb320a4ef2c6bf6c6111fb89ded7bb2533303d2683fa94f76c", kill_on_drop: false }` [INFO] [stdout] af8185d2535f44fb320a4ef2c6bf6c6111fb89ded7bb2533303d2683fa94f76c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ef5e14d1d87da3c792ddd81b12c856e206a57b13bc82482955bc8fe5fcdd8e3b [INFO] running `Command { std: "docker" "start" "-a" "ef5e14d1d87da3c792ddd81b12c856e206a57b13bc82482955bc8fe5fcdd8e3b", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Checking gimli v0.28.1 [INFO] [stderr] Checking rustc-demangle v0.1.23 [INFO] [stderr] Checking log v0.4.21 [INFO] [stderr] Checking futures v0.1.31 [INFO] [stderr] Compiling backtrace v0.3.71 [INFO] [stderr] Checking miniz_oxide v0.7.2 [INFO] [stderr] Compiling error-chain v0.12.4 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Checking addr2line v0.21.0 [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking jsonrpc-core v8.0.1 [INFO] [stderr] Checking jsonrpc-client-core v0.5.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `serde` is imported redundantly [INFO] [stdout] --> src/response.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use serde; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:65:1 [INFO] [stdout] | [INFO] [stdout] 65 | extern crate serde; [INFO] [stdout] | ------------------- the item `serde` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> src/response.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:67:1 [INFO] [stdout] | [INFO] [stdout] 67 | extern crate serde_json; [INFO] [stdout] | ------------------------ the item `serde_json` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde` is imported redundantly [INFO] [stdout] --> src/response.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use serde; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:65:1 [INFO] [stdout] | [INFO] [stdout] 65 | extern crate serde; [INFO] [stdout] | ------------------- the item `serde` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> src/response.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:67:1 [INFO] [stdout] | [INFO] [stdout] 67 | extern crate serde_json; [INFO] [stdout] | ------------------------ the item `serde_json` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:266:36 [INFO] [stdout] | [INFO] [stdout] 266 | pub type BoxFuture = Box + Send>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 266 | pub type BoxFuture = Box + Send>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.85s [INFO] running `Command { std: "docker" "inspect" "ef5e14d1d87da3c792ddd81b12c856e206a57b13bc82482955bc8fe5fcdd8e3b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ef5e14d1d87da3c792ddd81b12c856e206a57b13bc82482955bc8fe5fcdd8e3b", kill_on_drop: false }` [INFO] [stdout] ef5e14d1d87da3c792ddd81b12c856e206a57b13bc82482955bc8fe5fcdd8e3b