[INFO] cloning repository https://github.com/flavray/avro-rs-ffi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flavray/avro-rs-ffi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflavray%2Favro-rs-ffi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflavray%2Favro-rs-ffi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6b9e7278565a5f3ca5e4159fca2a27f75335586
[INFO] checking flavray/avro-rs-ffi against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflavray%2Favro-rs-ffi" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flavray/avro-rs-ffi on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/flavray/avro-rs-ffi
[INFO] finished tweaking git repo https://github.com/flavray/avro-rs-ffi
[INFO] tweaked toml for git repo https://github.com/flavray/avro-rs-ffi written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/flavray/avro-rs-ffi already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libflate v0.1.15
[INFO] [stderr]   Downloaded iter-read v0.1.0
[INFO] [stderr]   Downloaded serde_derive v1.0.66
[INFO] [stderr]   Downloaded avro-rs v0.4.1
[INFO] [stderr]   Downloaded snap v0.2.4
[INFO] [stderr]   Downloaded serde-pickle v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", 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] 5e1466eee88a7c437e440b65519dd1fb108f4d2e54bbdd3c5f564ac9efed19e7
[INFO] running `Command { std: "docker" "start" "-a" "5e1466eee88a7c437e440b65519dd1fb108f4d2e54bbdd3c5f564ac9efed19e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e1466eee88a7c437e440b65519dd1fb108f4d2e54bbdd3c5f564ac9efed19e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e1466eee88a7c437e440b65519dd1fb108f4d2e54bbdd3c5f564ac9efed19e7", kill_on_drop: false }`
[INFO] [stdout] 5e1466eee88a7c437e440b65519dd1fb108f4d2e54bbdd3c5f564ac9efed19e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 651e364371d54deaa8220df54caf0d59b24ad63d95adad727c5a8767a2463394
[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" "651e364371d54deaa8220df54caf0d59b24ad63d95adad727c5a8767a2463394", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]     Checking iter-read v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]     Checking libflate v0.1.15
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking backtrace v0.3.8
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.66
[INFO] [stderr]     Checking serde_json v1.0.21
[INFO] [stderr]     Checking serde-pickle v0.4.1
[INFO] [stderr]     Checking avro-rs v0.4.1
[INFO] [stderr]     Checking avro-rs-ffi v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |             let mut out = format!("stacktrace: {}", error.backtrace()).to_owned();
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |             let mut out = format!("stacktrace: {}", error.backtrace()).to_owned();
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::option::Option<*const AvroSchema>`, which is not FFI-safe
[INFO] [stdout]   --> src/reader.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |         schema: Option<*const AvroSchema>
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]    = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::option::Option<*const AvroSchema>`, which is not FFI-safe
[INFO] [stdout]   --> src/reader.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |         schema: Option<*const AvroSchema>
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]    = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.33s
[INFO] running `Command { std: "docker" "inspect" "651e364371d54deaa8220df54caf0d59b24ad63d95adad727c5a8767a2463394", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "651e364371d54deaa8220df54caf0d59b24ad63d95adad727c5a8767a2463394", kill_on_drop: false }`
[INFO] [stdout] 651e364371d54deaa8220df54caf0d59b24ad63d95adad727c5a8767a2463394