[INFO] crate wasmtime-py 0.3.0 is already in cache
[INFO] checking wasmtime-py-0.3.0 against try#ba14a92a10441c4b839ce71e6ef5f7a48bbff18f for prs-64470-and-65389
[INFO] extracting crate wasmtime-py 0.3.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate wasmtime-py 0.3.0 on toolchain ba14a92a10441c4b839ce71e6ef5f7a48bbff18f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate wasmtime-py 0.3.0
[INFO] finished tweaking crates.io crate wasmtime-py 0.3.0
[INFO] tweaked toml for crates.io crate wasmtime-py 0.3.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate wasmtime-py 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 274d4032765eae83799e8e8db292db42da437fca022c7aaf68b718995e6923dc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "274d4032765eae83799e8e8db292db42da437fca022c7aaf68b718995e6923dc"`
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking wasmparser v0.36.0
[INFO] [stderr]    Compiling wasmtime-environ v0.3.0
[INFO] [stderr]     Checking spin v0.5.1
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking wasmparser v0.35.3
[INFO] [stderr]     Checking id-arena v2.2.1
[INFO] [stderr]    Compiling wasmtime-runtime v0.3.0
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling scroll v0.9.2
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]     Checking mashup v0.1.9
[INFO] [stderr]    Compiling scroll_derive v0.9.5
[INFO] [stderr]    Compiling walrus-macro v0.11.0
[INFO] [stderr]    Compiling pyo3-derive-backend v0.7.0
[INFO] [stderr]    Compiling pyo3 v0.7.0
[INFO] [stderr]     Checking gimli v0.19.0
[INFO] [stderr]     Checking backtrace-sys v0.1.31
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking region v2.1.2
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking backtrace v0.3.35
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking goblin v0.0.23
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking walrus v0.11.0
[INFO] [stderr]    Compiling pyo3cls v0.7.0
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking wasm-webidl-bindings v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]    Compiling ghost v0.1.1
[INFO] [stderr]    Compiling ctor v0.1.10
[INFO] [stderr]    Compiling inventory-impl v0.1.4
[INFO] [stderr]     Checking inventory v0.1.4
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]     Checking cranelift-entity v0.40.0
[INFO] [stderr]     Checking string-interner v0.6.3
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.40.0
[INFO] [stderr]     Checking cranelift-bforest v0.40.0
[INFO] [stderr]    Compiling target-lexicon v0.4.0
[INFO] [stderr]     Checking faerie v0.10.1
[INFO] [stderr]    Compiling cranelift-codegen v0.40.0
[INFO] [stderr]     Checking cranelift-frontend v0.40.0
[INFO] [stderr]     Checking cranelift-native v0.40.0
[INFO] [stderr]     Checking cranelift-wasm v0.40.0
[INFO] [stderr]     Checking wasmtime-debug v0.3.0
[INFO] [stderr]     Checking wasmtime-jit v0.3.0
[INFO] [stderr]     Checking wasmtime-interface-types v0.3.0
[INFO] [stderr]     Checking wasmtime-py v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `import`
[INFO] [stderr]   --> examples/import/main.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / extern "C" {
[INFO] [stderr] 2  | |     fn callback(s: *const u8, s_len: u32) -> u32;
[INFO] [stderr] 3  | | }
[INFO] [stderr] 4  | |
[INFO] [stderr] ...  |
[INFO] [stderr] 10 | |     }
[INFO] [stderr] 11 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `examples/import/main.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `wasmtime-py`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "274d4032765eae83799e8e8db292db42da437fca022c7aaf68b718995e6923dc"`
[INFO] running `"docker" "rm" "-f" "274d4032765eae83799e8e8db292db42da437fca022c7aaf68b718995e6923dc"`
[INFO] [stdout] 274d4032765eae83799e8e8db292db42da437fca022c7aaf68b718995e6923dc