[INFO] fetching crate wasm-bpf-rs 0.3.2...
[INFO] checking wasm-bpf-rs-0.3.2 against master#092a284ba0421695f2032c947765429fd7095796 for pr-139763
[INFO] extracting crate wasm-bpf-rs 0.3.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate wasm-bpf-rs 0.3.2 on toolchain 092a284ba0421695f2032c947765429fd7095796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasm-bpf-rs 0.3.2
[INFO] finished tweaking crates.io crate wasm-bpf-rs 0.3.2
[INFO] tweaked toml for crates.io crate wasm-bpf-rs 0.3.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 292 packages to latest compatible versions
[INFO] [stderr]       Adding flexi_logger v0.25.6 (available: v0.30.1)
[INFO] [stderr]       Adding libbpf-rs v0.20.1 (available: v0.24.8)
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[INFO] [stderr]       Adding wasi-common v5.0.1 (available: v31.0.0)
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[INFO] [stderr]       Adding wiggle v5.0.1 (available: v31.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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_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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "bc8271fd30f0e6bde151cba7458266a3b3f2b177fde20976b3ca3d4ffe144423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc8271fd30f0e6bde151cba7458266a3b3f2b177fde20976b3ca3d4ffe144423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc8271fd30f0e6bde151cba7458266a3b3f2b177fde20976b3ca3d4ffe144423", kill_on_drop: false }`
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[INFO] [stderr]     Checking wasm-bpf-rs v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bpf/load.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let mut state = caller.data_mut();
[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/bpf/load.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let mut state = caller.data_mut();
[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: field `callback_func` is never read
[INFO] [stdout]   --> src/state.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[self_referencing(pub_extras)]
[INFO] [stdout]    | ------------------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub callback_func: RingBufferCallback,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `callback_func` is never read
[INFO] [stdout]   --> src/state.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[self_referencing(pub_extras)]
[INFO] [stdout]    | ------------------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub callback_func: PerfBufferSampleCallback,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_wasm_string` and `read_wasm_string_slice` are never used
[INFO] [stdout]   --> src/utils.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait CallerUtils {
[INFO] [stdout]    |           ----------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn read_wasm_string(&mut self, offset: usize) -> anyhow::Result<Vec<u8>>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 19 |     // Terminated zero won't be included
[INFO] [stdout] 20 |     fn read_wasm_string_slice(&mut self, offset: usize) -> anyhow::Result<&[u8]>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `callback_func` is never read
[INFO] [stdout]   --> src/state.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[self_referencing(pub_extras)]
[INFO] [stdout]    | ------------------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub callback_func: RingBufferCallback,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `callback_func` is never read
[INFO] [stdout]   --> src/state.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[self_referencing(pub_extras)]
[INFO] [stdout]    | ------------------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub callback_func: PerfBufferSampleCallback,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_wasm_string` and `read_wasm_string_slice` are never used
[INFO] [stdout]   --> src/utils.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait CallerUtils {
[INFO] [stdout]    |           ----------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn read_wasm_string(&mut self, offset: usize) -> anyhow::Result<Vec<u8>>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 19 |     // Terminated zero won't be included
[INFO] [stdout] 20 |     fn read_wasm_string_slice(&mut self, offset: usize) -> anyhow::Result<&[u8]>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 34s
[INFO] running `Command { std: "docker" "inspect" "e56b367a2a2e7a44b371bc83343cce957513403962cc48d2e1526e16328d1093", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e56b367a2a2e7a44b371bc83343cce957513403962cc48d2e1526e16328d1093", kill_on_drop: false }`
[INFO] [stdout] e56b367a2a2e7a44b371bc83343cce957513403962cc48d2e1526e16328d1093