[INFO] fetching crate serde-version 0.5.1... [INFO] checking serde-version-0.5.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141 [INFO] extracting crate serde-version 0.5.1 into /workspace/builds/worker-8/source [INFO] validating manifest of crates.io crate serde-version 0.5.1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate serde-version 0.5.1 [INFO] finished tweaking crates.io crate serde-version 0.5.1 [INFO] tweaked toml for crates.io crate serde-version 0.5.1 written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate crates.io crate serde-version 0.5.1 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded proc-macro2 v1.0.6 [INFO] [stderr] Downloaded failure_derive v0.1.6 [INFO] [stderr] Downloaded backtrace v0.3.40 [INFO] [stderr] Downloaded synstructure v0.12.3 [INFO] [stderr] Downloaded quickcheck_macros v0.8.0 [INFO] [stderr] Downloaded cc v1.0.47 [INFO] [stderr] Downloaded env_logger v0.6.2 [INFO] [stderr] Downloaded ron v0.5.1 [INFO] [stderr] Downloaded byteorder v1.3.2 [INFO] [stderr] Downloaded rustc-demangle v0.1.16 [INFO] [stderr] Downloaded regex v1.3.1 [INFO] [stderr] Downloaded quickcheck v0.8.5 [INFO] [stderr] Downloaded memchr v2.2.1 [INFO] [stderr] Downloaded toml v0.5.5 [INFO] [stderr] Downloaded log v0.4.8 [INFO] [stderr] Downloaded failure v0.1.6 [INFO] [stderr] Downloaded regex-syntax v0.6.12 [INFO] [stderr] Downloaded aho-corasick v0.7.6 [INFO] [stderr] Downloaded backtrace-sys v0.1.32 [INFO] [stderr] Downloaded syn v1.0.8 [INFO] [stderr] Downloaded serde_derive v1.0.103 [INFO] [stderr] Downloaded serde v1.0.103 [INFO] [stderr] Downloaded libc v0.2.65 [INFO] [stderr] Downloaded proc-macro-util v0.1.1 [INFO] [stderr] Downloaded type-name v0.1.0 [INFO] [stderr] Downloaded serde_version_derive v0.5.1 [INFO] [stderr] Downloaded serde_test v1.0.103 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b48d2f650b36f16bc3dd4b494bce44a94881589630e053f55c3643ca9b5d49d4 [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" "b48d2f650b36f16bc3dd4b494bce44a94881589630e053f55c3643ca9b5d49d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b48d2f650b36f16bc3dd4b494bce44a94881589630e053f55c3643ca9b5d49d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b48d2f650b36f16bc3dd4b494bce44a94881589630e053f55c3643ca9b5d49d4", kill_on_drop: false }` [INFO] [stdout] b48d2f650b36f16bc3dd4b494bce44a94881589630e053f55c3643ca9b5d49d4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 028a40e9b640723e7faeee5777bc8c669f3a3505c6b038e74cf7ee2e564d874a [INFO] running `Command { std: "docker" "start" "-a" "028a40e9b640723e7faeee5777bc8c669f3a3505c6b038e74cf7ee2e564d874a", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Checking type-name v0.1.0 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking regex v1.3.1 [INFO] [stderr] Compiling quickcheck_macros v0.8.0 [INFO] [stderr] Compiling backtrace v0.3.40 [INFO] [stderr] Checking rand v0.6.5 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Checking quickcheck v0.8.5 [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Compiling failure_derive v0.1.6 [INFO] [stderr] Compiling serde_derive v1.0.103 [INFO] [stderr] Compiling failure v0.1.6 [INFO] [stderr] Compiling proc-macro-util v0.1.1 [INFO] [stderr] Compiling serde_version_derive v0.5.1 [INFO] [stderr] Checking serde v1.0.103 [INFO] [stderr] Checking ron v0.5.1 [INFO] [stderr] Checking serde_test v1.0.103 [INFO] [stderr] Checking serde-version v0.5.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:34:12 [INFO] [stdout] | [INFO] [stdout] 34 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [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] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:34:12 [INFO] [stdout] | [INFO] [stdout] 34 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [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] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 37.81s [INFO] running `Command { std: "docker" "inspect" "028a40e9b640723e7faeee5777bc8c669f3a3505c6b038e74cf7ee2e564d874a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "028a40e9b640723e7faeee5777bc8c669f3a3505c6b038e74cf7ee2e564d874a", kill_on_drop: false }` [INFO] [stdout] 028a40e9b640723e7faeee5777bc8c669f3a3505c6b038e74cf7ee2e564d874a