[INFO] fetching crate io-uring-bearer 0.2.0-pre2...
[INFO] testing io-uring-bearer-0.2.0-pre2 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate io-uring-bearer 0.2.0-pre2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate io-uring-bearer 0.2.0-pre2
[INFO] finished tweaking crates.io crate io-uring-bearer 0.2.0-pre2
[INFO] tweaked toml for crates.io crate io-uring-bearer 0.2.0-pre2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate io-uring-bearer 0.2.0-pre2 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded io-uring-owner v0.2.0-pre1
[INFO] [stderr]   Downloaded slabbable-slab v0.1.0
[INFO] [stderr]   Downloaded slabbable-impl-selector v0.1.0
[INFO] [stderr]   Downloaded slabbable-hash v0.1.0
[INFO] [stderr]   Downloaded slabbable v0.1.0
[INFO] [stderr]   Downloaded io-uring-fd v0.2.0-pre1
[INFO] [stderr]   Downloaded capacity v0.1.2
[INFO] [stderr]   Downloaded no-std-compat v0.2.0
[INFO] [stderr]   Downloaded stable-vec v0.4.1
[INFO] [stderr]   Downloaded slabbable-stablevec v0.1.0
[INFO] [stderr]   Downloaded io-uring v0.7.8
[INFO] [stderr]   Downloaded io-uring-opcode v0.2.0-pre2
[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_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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f1f3b60ba32688f8e7e3f2a6eaf5d6add91d63025ddbcef2b65026dd4344173
[INFO] running `Command { std: "docker" "start" "-a" "3f1f3b60ba32688f8e7e3f2a6eaf5d6add91d63025ddbcef2b65026dd4344173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f1f3b60ba32688f8e7e3f2a6eaf5d6add91d63025ddbcef2b65026dd4344173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f1f3b60ba32688f8e7e3f2a6eaf5d6add91d63025ddbcef2b65026dd4344173", kill_on_drop: false }`
[INFO] [stdout] 3f1f3b60ba32688f8e7e3f2a6eaf5d6add91d63025ddbcef2b65026dd4344173
[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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 73d4472b1b9d8085d0180b10d3a8c5ac65b3faa13058c2c2c51d8435abe8d1fc
[INFO] running `Command { std: "docker" "start" "-a" "73d4472b1b9d8085d0180b10d3a8c5ac65b3faa13058c2c2c51d8435abe8d1fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling io-uring v0.7.8
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling nohash-hasher v0.2.0
[INFO] [stderr]    Compiling slabbable v0.1.0
[INFO] [stderr]    Compiling io-uring-owner v0.2.0-pre1
[INFO] [stderr]    Compiling io-uring-fd v0.2.0-pre1
[INFO] [stderr]    Compiling capacity v0.1.2
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]    Compiling slabbable-hash v0.1.0
[INFO] [stderr]    Compiling slabbable-impl-selector v0.1.0
[INFO] [stderr]    Compiling io-uring-opcode v0.2.0-pre2
[INFO] [stderr]    Compiling io-uring-bearer v0.2.0-pre2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `buf_idx` is never read
[INFO] [stdout]   --> src/slab/buffer.rs:88:16
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub(crate) struct TakenMutableBuffer {
[INFO] [stdout]    |                   ------------------ field in this struct
[INFO] [stdout] 88 |     pub(crate) buf_idx: usize,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TakenMutableBuffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `buf_idx`, `buf_size`, and `buf_kernel_index` are never read
[INFO] [stdout]    --> src/slab/buffer.rs:112:16
[INFO] [stdout]     |
[INFO] [stdout] 111 | pub(crate) struct TakenImmutableBuffer {
[INFO] [stdout]     |                   -------------------- fields in this struct
[INFO] [stdout] 112 |     pub(crate) buf_idx: usize,
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 113 |     pub(crate) buf_const_u8: *const u8,
[INFO] [stdout] 114 |     pub(crate) buf_size: u32,
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 115 |     pub(crate) buf_kernel_index: u16,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TakenImmutableBuffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `to_addr` is never read
[INFO] [stdout]   --> src/slab/send_zc.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct SendZcFixedRec {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     to_addr: Option<DestTo>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SendZcFixedRec` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `to_addr` is never read
[INFO] [stdout]   --> src/slab/send_zc.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct SendZcUnsafeRefRec {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     to_addr: Option<DestTo>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SendZcUnsafeRefRec` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]   --> src/slab/send_zc.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub enum DestTo {
[INFO] [stdout]    |          ------ variants in this enum
[INFO] [stdout] 84 |     V4(DestToV4),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 85 |     V6(DestToV6),
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DestTo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sockaddr` and `socklen_t` are never read
[INFO] [stdout]   --> src/slab/send_zc.rs:91:16
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct DestToV4 {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 91 |     pub(crate) sockaddr: libc::sockaddr_in,
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 92 |     pub(crate) socklen_t: libc::socklen_t,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DestToV4` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sockaddr` and `socklen_t` are never read
[INFO] [stdout]   --> src/slab/send_zc.rs:98:16
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub struct DestToV6 {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 98 |     pub(crate) sockaddr: libc::sockaddr_in6,
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 99 |     pub(crate) socklen_t: libc::socklen_t,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DestToV6` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fno2fixed` is never read
[INFO] [stdout]   --> src/fixed.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub(crate) struct FixedFdRegister {
[INFO] [stdout]    |                   --------------- field in this struct
[INFO] [stdout] 12 |     fno2fixed: SelectedHashMap<u32, u32, SelectedHasher<u32>>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FixedFdRegister` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.88s
[INFO] running `Command { std: "docker" "inspect" "73d4472b1b9d8085d0180b10d3a8c5ac65b3faa13058c2c2c51d8435abe8d1fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73d4472b1b9d8085d0180b10d3a8c5ac65b3faa13058c2c2c51d8435abe8d1fc", kill_on_drop: false }`
[INFO] [stdout] 73d4472b1b9d8085d0180b10d3a8c5ac65b3faa13058c2c2c51d8435abe8d1fc
[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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] a64748d20132d75b36fb79b5c03cb49756aff052b836ec9e596b310b178de756
[INFO] running `Command { std: "docker" "start" "-a" "a64748d20132d75b36fb79b5c03cb49756aff052b836ec9e596b310b178de756", kill_on_drop: false }`
[INFO] [stdout] warning: field `buf_idx` is never read
[INFO] [stdout]   --> src/slab/buffer.rs:88:16
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub(crate) struct TakenMutableBuffer {
[INFO] [stdout]    |                   ------------------ field in this struct
[INFO] [stdout] 88 |     pub(crate) buf_idx: usize,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TakenMutableBuffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `buf_idx`, `buf_size`, and `buf_kernel_index` are never read
[INFO] [stdout]    --> src/slab/buffer.rs:112:16
[INFO] [stdout]     |
[INFO] [stdout] 111 | pub(crate) struct TakenImmutableBuffer {
[INFO] [stdout]     |                   -------------------- fields in this struct
[INFO] [stdout] 112 |     pub(crate) buf_idx: usize,
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 113 |     pub(crate) buf_const_u8: *const u8,
[INFO] [stdout] 114 |     pub(crate) buf_size: u32,
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 115 |     pub(crate) buf_kernel_index: u16,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TakenImmutableBuffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `to_addr` is never read
[INFO] [stdout]   --> src/slab/send_zc.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct SendZcFixedRec {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     to_addr: Option<DestTo>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SendZcFixedRec` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling io-uring-bearer v0.2.0-pre2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `to_addr` is never read
[INFO] [stdout]   --> src/slab/send_zc.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct SendZcUnsafeRefRec {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     to_addr: Option<DestTo>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SendZcUnsafeRefRec` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]   --> src/slab/send_zc.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub enum DestTo {
[INFO] [stdout]    |          ------ variants in this enum
[INFO] [stdout] 84 |     V4(DestToV4),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 85 |     V6(DestToV6),
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DestTo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sockaddr` and `socklen_t` are never read
[INFO] [stdout]   --> src/slab/send_zc.rs:91:16
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct DestToV4 {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 91 |     pub(crate) sockaddr: libc::sockaddr_in,
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 92 |     pub(crate) socklen_t: libc::socklen_t,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DestToV4` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sockaddr` and `socklen_t` are never read
[INFO] [stdout]   --> src/slab/send_zc.rs:98:16
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub struct DestToV6 {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 98 |     pub(crate) sockaddr: libc::sockaddr_in6,
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 99 |     pub(crate) socklen_t: libc::socklen_t,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DestToV6` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fno2fixed` is never read
[INFO] [stdout]   --> src/fixed.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub(crate) struct FixedFdRegister {
[INFO] [stdout]    |                   --------------- field in this struct
[INFO] [stdout] 12 |     fno2fixed: SelectedHashMap<u32, u32, SelectedHasher<u32>>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FixedFdRegister` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `buf_idx` is never read
[INFO] [stdout]   --> src/slab/buffer.rs:88:16
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub(crate) struct TakenMutableBuffer {
[INFO] [stdout]    |                   ------------------ field in this struct
[INFO] [stdout] 88 |     pub(crate) buf_idx: usize,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TakenMutableBuffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `buf_idx`, `buf_size`, and `buf_kernel_index` are never read
[INFO] [stdout]    --> src/slab/buffer.rs:112:16
[INFO] [stdout]     |
[INFO] [stdout] 111 | pub(crate) struct TakenImmutableBuffer {
[INFO] [stdout]     |                   -------------------- fields in this struct
[INFO] [stdout] 112 |     pub(crate) buf_idx: usize,
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 113 |     pub(crate) buf_const_u8: *const u8,
[INFO] [stdout] 114 |     pub(crate) buf_size: u32,
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 115 |     pub(crate) buf_kernel_index: u16,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TakenImmutableBuffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `to_addr` is never read
[INFO] [stdout]   --> src/slab/send_zc.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct SendZcFixedRec {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     to_addr: Option<DestTo>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SendZcFixedRec` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `to_addr` is never read
[INFO] [stdout]   --> src/slab/send_zc.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct SendZcUnsafeRefRec {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     to_addr: Option<DestTo>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SendZcUnsafeRefRec` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]   --> src/slab/send_zc.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub enum DestTo {
[INFO] [stdout]    |          ------ variants in this enum
[INFO] [stdout] 84 |     V4(DestToV4),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 85 |     V6(DestToV6),
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DestTo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sockaddr` and `socklen_t` are never read
[INFO] [stdout]   --> src/slab/send_zc.rs:91:16
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct DestToV4 {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 91 |     pub(crate) sockaddr: libc::sockaddr_in,
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 92 |     pub(crate) socklen_t: libc::socklen_t,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DestToV4` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sockaddr` and `socklen_t` are never read
[INFO] [stdout]   --> src/slab/send_zc.rs:98:16
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub struct DestToV6 {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 98 |     pub(crate) sockaddr: libc::sockaddr_in6,
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 99 |     pub(crate) socklen_t: libc::socklen_t,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DestToV6` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fno2fixed` is never read
[INFO] [stdout]   --> src/fixed.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub(crate) struct FixedFdRegister {
[INFO] [stdout]    |                   --------------- field in this struct
[INFO] [stdout] 12 |     fno2fixed: SelectedHashMap<u32, u32, SelectedHasher<u32>>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FixedFdRegister` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "a64748d20132d75b36fb79b5c03cb49756aff052b836ec9e596b310b178de756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a64748d20132d75b36fb79b5c03cb49756aff052b836ec9e596b310b178de756", kill_on_drop: false }`
[INFO] [stdout] a64748d20132d75b36fb79b5c03cb49756aff052b836ec9e596b310b178de756
[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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] ef517277caabe3fe8a534999f12378d04ee82dc2e25a9834a2dc5428214dfb7a
[INFO] running `Command { std: "docker" "start" "-a" "ef517277caabe3fe8a534999f12378d04ee82dc2e25a9834a2dc5428214dfb7a", kill_on_drop: false }`
[INFO] [stderr] warning: field `buf_idx` is never read
[INFO] [stderr]   --> src/slab/buffer.rs:88:16
[INFO] [stderr]    |
[INFO] [stderr] 87 | pub(crate) struct TakenMutableBuffer {
[INFO] [stderr]    |                   ------------------ field in this struct
[INFO] [stderr] 88 |     pub(crate) buf_idx: usize,
[INFO] [stderr]    |                ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `TakenMutableBuffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `buf_idx`, `buf_size`, and `buf_kernel_index` are never read
[INFO] [stderr]    --> src/slab/buffer.rs:112:16
[INFO] [stderr]     |
[INFO] [stderr] 111 | pub(crate) struct TakenImmutableBuffer {
[INFO] [stderr]     |                   -------------------- fields in this struct
[INFO] [stderr] 112 |     pub(crate) buf_idx: usize,
[INFO] [stderr]     |                ^^^^^^^
[INFO] [stderr] 113 |     pub(crate) buf_const_u8: *const u8,
[INFO] [stderr] 114 |     pub(crate) buf_size: u32,
[INFO] [stderr]     |                ^^^^^^^^
[INFO] [stderr] 115 |     pub(crate) buf_kernel_index: u16,
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `TakenImmutableBuffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `to_addr` is never read
[INFO] [stderr]   --> src/slab/send_zc.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub struct SendZcFixedRec {
[INFO] [stderr]    |            -------------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 23 |     to_addr: Option<DestTo>,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `SendZcFixedRec` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `to_addr` is never read
[INFO] [stderr]   --> src/slab/send_zc.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct SendZcUnsafeRefRec {
[INFO] [stderr]    |            ------------------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 33 |     to_addr: Option<DestTo>,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `SendZcUnsafeRefRec` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/slab/send_zc.rs:84:5
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 83 | pub enum DestTo {
[INFO] [stdout] 
[INFO] [stderr]    |          ------ variants in this enum
[INFO] [stderr] 84 |     V4(DestToV4),
[INFO] [stderr]    |     ^^
[INFO] [stderr] 85 |     V6(DestToV6),
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `DestTo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `sockaddr` and `socklen_t` are never read
[INFO] [stderr]   --> src/slab/send_zc.rs:91:16
[INFO] [stderr]    |
[INFO] [stderr] 90 | pub struct DestToV4 {
[INFO] [stderr]    |            -------- fields in this struct
[INFO] [stderr] 91 |     pub(crate) sockaddr: libc::sockaddr_in,
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr] 92 |     pub(crate) socklen_t: libc::socklen_t,
[INFO] [stderr]    |                ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `DestToV4` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `sockaddr` and `socklen_t` are never read
[INFO] [stderr]   --> src/slab/send_zc.rs:98:16
[INFO] [stderr]    |
[INFO] [stderr] 97 | pub struct DestToV6 {
[INFO] [stderr]    |            -------- fields in this struct
[INFO] [stderr] 98 |     pub(crate) sockaddr: libc::sockaddr_in6,
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr] 99 |     pub(crate) socklen_t: libc::socklen_t,
[INFO] [stderr]    |                ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `DestToV6` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `fno2fixed` is never read
[INFO] [stderr]   --> src/fixed.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub(crate) struct FixedFdRegister {
[INFO] [stderr]    |                   --------------- field in this struct
[INFO] [stderr] 12 |     fno2fixed: SelectedHashMap<u32, u32, SelectedHasher<u32>>,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `FixedFdRegister` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `io-uring-bearer` (lib) generated 8 warnings
[INFO] [stderr] warning: `io-uring-bearer` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/io_uring_bearer-a2d1e7ded3653100)
[INFO] running `Command { std: "docker" "inspect" "ef517277caabe3fe8a534999f12378d04ee82dc2e25a9834a2dc5428214dfb7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef517277caabe3fe8a534999f12378d04ee82dc2e25a9834a2dc5428214dfb7a", kill_on_drop: false }`
[INFO] [stdout] ef517277caabe3fe8a534999f12378d04ee82dc2e25a9834a2dc5428214dfb7a