[INFO] fetching crate casperlabs-contract-ffi 0.22.0...
[INFO] testing casperlabs-contract-ffi-0.22.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate casperlabs-contract-ffi 0.22.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate casperlabs-contract-ffi 0.22.0 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate casperlabs-contract-ffi 0.22.0
[INFO] finished tweaking crates.io crate casperlabs-contract-ffi 0.22.0
[INFO] tweaked toml for crates.io crate casperlabs-contract-ffi 0.22.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6e26ca787060133cf0d4726b4c732282a4905835e7084fb428163bb54051818
[INFO] running `Command { std: "docker" "start" "-a" "a6e26ca787060133cf0d4726b4c732282a4905835e7084fb428163bb54051818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6e26ca787060133cf0d4726b4c732282a4905835e7084fb428163bb54051818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6e26ca787060133cf0d4726b4c732282a4905835e7084fb428163bb54051818", kill_on_drop: false }`
[INFO] [stdout] a6e26ca787060133cf0d4726b4c732282a4905835e7084fb428163bb54051818
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c767fd4bcd0b31de276474fe031aebf97ed12113efa07936ae8e639e7fedc35
[INFO] running `Command { std: "docker" "start" "-a" "5c767fd4bcd0b31de276474fe031aebf97ed12113efa07936ae8e639e7fedc35", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]    Compiling memory_units v0.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling casperlabs-contract-ffi v0.22.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `alloc::alloc::Alloc`
[INFO] [stdout]   --> src/contract_api/mod.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     alloc::{Alloc, Global},
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             no `Alloc` in `alloc`
[INFO] [stdout]    |             help: a similar name exists in the module: `alloc`
[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:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     specialization,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `alloc_array` found for struct `Global` in the current scope
[INFO] [stdout]   --> src/contract_api/mod.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 |             .alloc_array(n)
[INFO] [stdout]    |              ^^^^^^^^^^^ method not found in `Global`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `casperlabs-contract-ffi`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5c767fd4bcd0b31de276474fe031aebf97ed12113efa07936ae8e639e7fedc35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c767fd4bcd0b31de276474fe031aebf97ed12113efa07936ae8e639e7fedc35", kill_on_drop: false }`
[INFO] [stdout] 5c767fd4bcd0b31de276474fe031aebf97ed12113efa07936ae8e639e7fedc35