[INFO] fetching crate wasm_membrane_host 0.2.0...
[INFO] testing wasm_membrane_host-0.2.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate wasm_membrane_host 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate wasm_membrane_host 0.2.0
[INFO] finished tweaking crates.io crate wasm_membrane_host 0.2.0
[INFO] tweaked toml for crates.io crate wasm_membrane_host 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wasm_membrane_host 0.2.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
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[INFO] [stdout] 3d2e601b6d59e43b6ecac2f295bd3aeea744d95711a080a6d82052294ef46dcc
[INFO] running `Command { std: "docker" "start" "-a" "3d2e601b6d59e43b6ecac2f295bd3aeea744d95711a080a6d82052294ef46dcc", kill_on_drop: false }`
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[INFO] [stderr]    Compiling wasmer v2.3.0
[INFO] [stderr]    Compiling wasm_membrane_host v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `NamedResolver` and `RuntimeError`
[INFO] [stdout]  --> src/membrane.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     NamedResolver, RuntimeError, WasmPtr, WasmerEnv,
[INFO] [stdout]   |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/membrane.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/membrane.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 55 |                     Err(error) => {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ptr` and `len` are never read
[INFO] [stdout]    --> src/membrane.rs:320:5
[INFO] [stdout]     |
[INFO] [stdout] 319 | pub struct WasmBuffer {
[INFO] [stdout]     |            ---------- fields in this struct
[INFO] [stdout] 320 |     ptr: WasmPtr<u8, Array>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 321 |     len: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `WasmBuffer` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.46s
[INFO] running `Command { std: "docker" "inspect" "3d2e601b6d59e43b6ecac2f295bd3aeea744d95711a080a6d82052294ef46dcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d2e601b6d59e43b6ecac2f295bd3aeea744d95711a080a6d82052294ef46dcc", kill_on_drop: false }`
[INFO] [stdout] 3d2e601b6d59e43b6ecac2f295bd3aeea744d95711a080a6d82052294ef46dcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de3f32afb5007c965135099923a421ed621e870298c53a4de0da951e4e7aa5dd
[INFO] running `Command { std: "docker" "start" "-a" "de3f32afb5007c965135099923a421ed621e870298c53a4de0da951e4e7aa5dd", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `NamedResolver` and `RuntimeError`
[INFO] [stdout]  --> src/membrane.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     NamedResolver, RuntimeError, WasmPtr, WasmerEnv,
[INFO] [stdout]   |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/membrane.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/membrane.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 55 |                     Err(error) => {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wasm_membrane_host v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `ptr` and `len` are never read
[INFO] [stdout]    --> src/membrane.rs:320:5
[INFO] [stdout]     |
[INFO] [stdout] 319 | pub struct WasmBuffer {
[INFO] [stdout]     |            ---------- fields in this struct
[INFO] [stdout] 320 |     ptr: WasmPtr<u8, Array>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 321 |     len: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `WasmBuffer` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NamedResolver` and `RuntimeError`
[INFO] [stdout]  --> src/membrane.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     NamedResolver, RuntimeError, WasmPtr, WasmerEnv,
[INFO] [stdout]   |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/membrane.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/membrane.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 55 |                     Err(error) => {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ptr` and `len` are never read
[INFO] [stdout]    --> src/membrane.rs:320:5
[INFO] [stdout]     |
[INFO] [stdout] 319 | pub struct WasmBuffer {
[INFO] [stdout]     |            ---------- fields in this struct
[INFO] [stdout] 320 |     ptr: WasmPtr<u8, Array>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 321 |     len: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `WasmBuffer` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "de3f32afb5007c965135099923a421ed621e870298c53a4de0da951e4e7aa5dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de3f32afb5007c965135099923a421ed621e870298c53a4de0da951e4e7aa5dd", kill_on_drop: false }`
[INFO] [stdout] de3f32afb5007c965135099923a421ed621e870298c53a4de0da951e4e7aa5dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4756224f45e7e8d59e939321d880668cfc08d380f45ef575830e79d3e39d8e96
[INFO] running `Command { std: "docker" "start" "-a" "4756224f45e7e8d59e939321d880668cfc08d380f45ef575830e79d3e39d8e96", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `NamedResolver` and `RuntimeError`
[INFO] [stderr]  --> src/membrane.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     NamedResolver, RuntimeError, WasmPtr, WasmerEnv,
[INFO] [stderr]   |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]  --> src/membrane.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ops::Deref;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `error`
[INFO] [stderr]   --> src/membrane.rs:55:25
[INFO] [stderr]    |
[INFO] [stderr] 55 |                     Err(error) => {
[INFO] [stderr]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `ptr` and `len` are never read
[INFO] [stderr]    --> src/membrane.rs:320:5
[INFO] [stderr]     |
[INFO] [stderr] 319 | pub struct WasmBuffer {
[INFO] [stderr]     |            ---------- fields in this struct
[INFO] [stderr] 320 |     ptr: WasmPtr<u8, Array>,
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 321 |     len: u32,
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `WasmBuffer` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `wasm_membrane_host` (lib) generated 4 warnings (run `cargo fix --lib -p wasm_membrane_host` to apply 1 suggestion)
[INFO] [stderr] warning: `wasm_membrane_host` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wasm_membrane_host-4ca983b875bfaff3)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests wasm_membrane_host
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4756224f45e7e8d59e939321d880668cfc08d380f45ef575830e79d3e39d8e96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4756224f45e7e8d59e939321d880668cfc08d380f45ef575830e79d3e39d8e96", kill_on_drop: false }`
[INFO] [stdout] 4756224f45e7e8d59e939321d880668cfc08d380f45ef575830e79d3e39d8e96