[INFO] fetching crate serde-version 0.5.1... [INFO] checking serde-version-0.5.1 against master#de32266a1780aa4ef748ce7f6200a1554fad0aca for pr-75585 [INFO] extracting crate serde-version 0.5.1 into /workspace/builds/worker-0/source [INFO] validating manifest of crates.io crate serde-version 0.5.1 on toolchain de32266a1780aa4ef748ce7f6200a1554fad0aca [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "read-manifest" "--manifest-path" "Cargo.toml", 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-0/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" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cb7b297ecf133003b6d5e1f9d91ce077cdb5c1c7de3f3afbbcb5fc2fa0e7c104 [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" "cb7b297ecf133003b6d5e1f9d91ce077cdb5c1c7de3f3afbbcb5fc2fa0e7c104", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cb7b297ecf133003b6d5e1f9d91ce077cdb5c1c7de3f3afbbcb5fc2fa0e7c104", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cb7b297ecf133003b6d5e1f9d91ce077cdb5c1c7de3f3afbbcb5fc2fa0e7c104", kill_on_drop: false }` [INFO] [stdout] cb7b297ecf133003b6d5e1f9d91ce077cdb5c1c7de3f3afbbcb5fc2fa0e7c104 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "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] e97c1ae7a4b9b47265fcc6546ae16e949caa1ebf5b07549c96fd08dc915493a8 [INFO] running `Command { std: "docker" "start" "-a" "e97c1ae7a4b9b47265fcc6546ae16e949caa1ebf5b07549c96fd08dc915493a8", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Compiling cc v1.0.47 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling serde v1.0.103 [INFO] [stderr] Checking rustc-demangle v0.1.16 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking type-name v0.1.0 [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex v1.3.1 [INFO] [stderr] Checking rand v0.6.5 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Checking quickcheck v0.8.5 [INFO] [stderr] Compiling backtrace v0.3.40 [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Compiling quickcheck_macros v0.8.0 [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 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] [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] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 50.27s [INFO] running `Command { std: "docker" "inspect" "e97c1ae7a4b9b47265fcc6546ae16e949caa1ebf5b07549c96fd08dc915493a8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e97c1ae7a4b9b47265fcc6546ae16e949caa1ebf5b07549c96fd08dc915493a8", kill_on_drop: false }` [INFO] [stdout] e97c1ae7a4b9b47265fcc6546ae16e949caa1ebf5b07549c96fd08dc915493a8