[INFO] fetching crate json-trait-rs 0.11.0... [INFO] checking json-trait-rs-0.11.0 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056 [INFO] extracting crate json-trait-rs 0.11.0 into /workspace/builds/worker-5/source [INFO] validating manifest of crates.io crate json-trait-rs 0.11.0 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-5/source/rust-toolchain [INFO] started tweaking crates.io crate json-trait-rs 0.11.0 [INFO] finished tweaking crates.io crate json-trait-rs 0.11.0 [INFO] tweaked toml for crates.io crate json-trait-rs 0.11.0 written to /workspace/builds/worker-5/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded join-lazy-fmt v0.9.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] dd0835753d48e58ca8f27899a4fef95f2451327671a5ba955305d76f35b94c2e [INFO] running `Command { std: "docker" "start" "-a" "dd0835753d48e58ca8f27899a4fef95f2451327671a5ba955305d76f35b94c2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dd0835753d48e58ca8f27899a4fef95f2451327671a5ba955305d76f35b94c2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dd0835753d48e58ca8f27899a4fef95f2451327671a5ba955305d76f35b94c2e", kill_on_drop: false }` [INFO] [stdout] dd0835753d48e58ca8f27899a4fef95f2451327671a5ba955305d76f35b94c2e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d7f89c74924e555d5dcdb6542bbcf3a9f55935b90bb04d4dc55751e89ec2c84a [INFO] running `Command { std: "docker" "start" "-a" "d7f89c74924e555d5dcdb6542bbcf3a9f55935b90bb04d4dc55751e89ec2c84a", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.29 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling libc v0.2.102 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Checking join-lazy-fmt v0.9.2 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling test-case v1.2.0 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Checking object v0.26.2 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling syn v1.0.76 [INFO] [stderr] Checking backtrace v0.3.61 [INFO] [stderr] Checking serde_json v1.0.68 [INFO] [stderr] Compiling synstructure v0.12.5 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling strum_macros v0.21.1 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking json-trait-rs v0.11.0 (/opt/rustwide/workdir) [INFO] [stdout] error: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:43:12 [INFO] [stdout] | [INFO] [stdout] 43 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:37:5 [INFO] [stdout] | [INFO] [stdout] 37 | warnings, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] = note: `#[deny(incomplete_features)]` implied by `#[deny(warnings)]` [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:43:12 [INFO] [stdout] | [INFO] [stdout] 43 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:37:5 [INFO] [stdout] | [INFO] [stdout] 37 | warnings, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] = note: `#[deny(incomplete_features)]` implied by `#[deny(warnings)]` [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `json-trait-rs` due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "d7f89c74924e555d5dcdb6542bbcf3a9f55935b90bb04d4dc55751e89ec2c84a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d7f89c74924e555d5dcdb6542bbcf3a9f55935b90bb04d4dc55751e89ec2c84a", kill_on_drop: false }` [INFO] [stdout] d7f89c74924e555d5dcdb6542bbcf3a9f55935b90bb04d4dc55751e89ec2c84a