[INFO] cloning repository https://github.com/Redrield/wasm-plugin-system
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Redrield/wasm-plugin-system" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRedrield%2Fwasm-plugin-system", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRedrield%2Fwasm-plugin-system'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 42e08a529b69d2d603bb56f90b728e9d8a8bc8b7
[INFO] checking Redrield/wasm-plugin-system against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRedrield%2Fwasm-plugin-system" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Redrield/wasm-plugin-system on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Redrield/wasm-plugin-system
[INFO] finished tweaking git repo https://github.com/Redrield/wasm-plugin-system
[INFO] tweaked toml for git repo https://github.com/Redrield/wasm-plugin-system written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Redrield/wasm-plugin-system already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2f4c5df1de97c49896746625edbc1419443f96725f72af11e307fd296c53722
[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" "c2f4c5df1de97c49896746625edbc1419443f96725f72af11e307fd296c53722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2f4c5df1de97c49896746625edbc1419443f96725f72af11e307fd296c53722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2f4c5df1de97c49896746625edbc1419443f96725f72af11e307fd296c53722", kill_on_drop: false }`
[INFO] [stdout] c2f4c5df1de97c49896746625edbc1419443f96725f72af11e307fd296c53722
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0730e480074cebd80d8bd70d33827398421074000d6de2b692702eb8aeae11af
[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" "0730e480074cebd80d8bd70d33827398421074000d6de2b692702eb8aeae11af", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.59.0
[INFO] [stderr]    Compiling cranelift-entity v0.59.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]    Compiling target-lexicon v0.9.0
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]     Checking wasmparser v0.51.4
[INFO] [stderr]    Compiling inventory v0.1.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking plugin-macros v0.1.0 (/opt/rustwide/workdir/plugin-macros)
[INFO] [stderr]    Compiling blake3 v0.1.5
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking cranelift-bforest v0.59.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.59.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking errno v0.2.5
[INFO] [stderr]     Checking page_size v0.4.2
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling wasmer-runtime-core v0.16.2
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling thiserror-impl v1.0.15
[INFO] [stderr]    Compiling ghost v0.1.1
[INFO] [stderr]    Compiling inventory-impl v0.1.6
[INFO] [stderr]    Compiling ctor v0.1.14
[INFO] [stderr]    Compiling typetag-impl v0.1.4
[INFO] [stderr]    Compiling cranelift-codegen v0.59.0
[INFO] [stderr]     Checking thiserror v1.0.15
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking serde_bytes v0.11.3
[INFO] [stderr]     Checking serde-bench v0.0.7
[INFO] [stderr]     Checking erased-serde v0.3.11
[INFO] [stderr]     Checking generational-arena v0.2.7
[INFO] [stderr]     Checking api v0.1.0 (/opt/rustwide/workdir/api)
[INFO] [stderr]     Checking gimli v0.20.0
[INFO] [stdout] warning: unused import: `crate::SomeEvent`
[INFO] [stdout]  --> api/src/wasm.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::SomeEvent;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::SomeEvent`
[INFO] [stdout]  --> api/src/wasm.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::SomeEvent;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking typetag v0.1.4
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking plugin v0.1.0 (/opt/rustwide/workdir/plugin)
[INFO] [stdout] warning: unused import: `api::SomeEvent`
[INFO] [stdout]  --> plugin/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use api::SomeEvent;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]  --> plugin/src/main.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub extern "C" fn event_handler(ev_bytes: &[u8]) {
[INFO] [stdout]   |                                           ^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]   = help: consider using a raw pointer instead
[INFO] [stdout]   = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `api::SomeEvent`
[INFO] [stdout]  --> plugin/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use api::SomeEvent;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]  --> plugin/src/main.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub extern "C" fn event_handler(ev_bytes: &[u8]) {
[INFO] [stdout]   |                                           ^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]   = help: consider using a raw pointer instead
[INFO] [stdout]   = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking wasmer-wasi v0.16.2
[INFO] [stderr]     Checking wasmer-clif-fork-frontend v0.59.0
[INFO] [stderr]     Checking cranelift-native v0.59.0
[INFO] [stderr]     Checking wasmer-clif-fork-wasm v0.59.0
[INFO] [stderr]     Checking wasmer-clif-backend v0.16.2
[INFO] [stderr]     Checking wasmer-runtime v0.16.2
[INFO] [stderr]     Checking host v0.1.0 (/opt/rustwide/workdir/host)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> host/src/plugin.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |             let mut wasm_buf = ptr.deref_mut(mem, 0, buf.len() as u32).unwrap();
[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]   --> host/src/plugin.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |             let mut wasm_buf = ptr.deref_mut(mem, 0, buf.len() as u32).unwrap();
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 22s
[INFO] running `Command { std: "docker" "inspect" "0730e480074cebd80d8bd70d33827398421074000d6de2b692702eb8aeae11af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0730e480074cebd80d8bd70d33827398421074000d6de2b692702eb8aeae11af", kill_on_drop: false }`
[INFO] [stdout] 0730e480074cebd80d8bd70d33827398421074000d6de2b692702eb8aeae11af