[INFO] fetching crate casperlabs-contract 0.6.1...
[INFO] checking casperlabs-contract-0.6.1 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate casperlabs-contract 0.6.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate casperlabs-contract 0.6.1 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate casperlabs-contract 0.6.1
[INFO] finished tweaking crates.io crate casperlabs-contract 0.6.1
[INFO] tweaked toml for crates.io crate casperlabs-contract 0.6.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c51ccac63f134f1abf3362d05983b3bf7cfe8e49130c3a9a9c3405c4dfbb4f81
[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" "c51ccac63f134f1abf3362d05983b3bf7cfe8e49130c3a9a9c3405c4dfbb4f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c51ccac63f134f1abf3362d05983b3bf7cfe8e49130c3a9a9c3405c4dfbb4f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c51ccac63f134f1abf3362d05983b3bf7cfe8e49130c3a9a9c3405c4dfbb4f81", kill_on_drop: false }`
[INFO] [stdout] c51ccac63f134f1abf3362d05983b3bf7cfe8e49130c3a9a9c3405c4dfbb4f81
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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] 5261f86cbf730a6515e74e26a870e5a938e6c0dd9574fb4491e2d9ed7d60c430
[INFO] running `Command { std: "docker" "start" "-a" "5261f86cbf730a6515e74e26a870e5a938e6c0dd9574fb4491e2d9ed7d60c430", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling pulldown-cmark v0.4.1
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]     Checking base16 v0.2.1
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking uint v0.8.5
[INFO] [stderr]     Checking casperlabs-types v0.6.1
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking casperlabs-contract v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/handlers.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     unsafe {
[INFO] [stdout]    |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/handlers.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     unsafe {
[INFO] [stdout]    |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Layout`, which is not FFI-safe
[INFO] [stdout]   --> src/handlers.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub extern "C" fn oom(_: ::core::alloc::Layout) -> ! {
[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)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking version-sync v0.8.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.23s
[INFO] running `Command { std: "docker" "inspect" "5261f86cbf730a6515e74e26a870e5a938e6c0dd9574fb4491e2d9ed7d60c430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5261f86cbf730a6515e74e26a870e5a938e6c0dd9574fb4491e2d9ed7d60c430", kill_on_drop: false }`
[INFO] [stdout] 5261f86cbf730a6515e74e26a870e5a938e6c0dd9574fb4491e2d9ed7d60c430