[INFO] fetching crate cxl_rs 0.0.5...
[INFO] checking cxl_rs-0.0.5 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate cxl_rs 0.0.5 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate cxl_rs 0.0.5 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cxl_rs 0.0.5
[INFO] finished tweaking crates.io crate cxl_rs 0.0.5
[INFO] tweaked toml for crates.io crate cxl_rs 0.0.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.2.1 (available: v1.3.2)
[INFO] [stderr]       Adding fletcher v0.1.0 (available: v1.0.0)
[INFO] [stderr]       Adding memoffset v0.6.5 (available: v0.9.1)
[INFO] [stderr]       Adding nix v0.20.2 (available: v0.29.0)
[INFO] [stderr]       Adding uuid v0.8.2 (available: v1.10.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a92ca34a45651a1071788997cbba061011357f80f1278d74a17c5dd52afe96af
[INFO] running `Command { std: "docker" "start" "-a" "a92ca34a45651a1071788997cbba061011357f80f1278d74a17c5dd52afe96af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a92ca34a45651a1071788997cbba061011357f80f1278d74a17c5dd52afe96af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a92ca34a45651a1071788997cbba061011357f80f1278d74a17c5dd52afe96af", kill_on_drop: false }`
[INFO] [stdout] a92ca34a45651a1071788997cbba061011357f80f1278d74a17c5dd52afe96af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43701601ba2e01a5bb770576fb7d3ada0279aefe51196759be2a21cd758fb071
[INFO] running `Command { std: "docker" "start" "-a" "43701601ba2e01a5bb770576fb7d3ada0279aefe51196759be2a21cd758fb071", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking fletcher v0.1.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking nix v0.20.2
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]     Checking serde v1.0.210
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking cxl_rs v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `sysfs_path` is never read
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Memdev {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 18 |     #[serde(skip_serializing)]
[INFO] [stdout] 19 |     sysfs_path: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Memdev` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sysfs_path` is never read
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Memdev {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 18 |     #[serde(skip_serializing)]
[INFO] [stdout] 19 |     sysfs_path: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Memdev` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]   --> src/query/query_bindings.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 36 |         unsafe { &(*(::std::ptr::null::<__kernel_fd_set>())).fds_bits as *const _ as usize },
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deref_nullptr)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]   --> src/query/query_bindings.rs:86:19
[INFO] [stdout]    |
[INFO] [stdout] 86 |         unsafe { &(*(::std::ptr::null::<__kernel_fsid_t>())).val as *const _ as usize },
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/query/query_bindings.rs:145:19
[INFO] [stdout]     |
[INFO] [stdout] 145 |         unsafe { &(*(::std::ptr::null::<_bindgen_ty_2>())).name as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/query/query_bindings.rs:196:19
[INFO] [stdout]     |
[INFO] [stdout] 196 |         unsafe { &(*(::std::ptr::null::<cxl_command_info>())).id as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/query/query_bindings.rs:206:19
[INFO] [stdout]     |
[INFO] [stdout] 206 |         unsafe { &(*(::std::ptr::null::<cxl_command_info>())).flags as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/query/query_bindings.rs:216:19
[INFO] [stdout]     |
[INFO] [stdout] 216 |         unsafe { &(*(::std::ptr::null::<cxl_command_info>())).size_in as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/query/query_bindings.rs:226:19
[INFO] [stdout]     |
[INFO] [stdout] 226 |         unsafe { &(*(::std::ptr::null::<cxl_command_info>())).size_out as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/query/query_bindings.rs:278:14
[INFO] [stdout]     |
[INFO] [stdout] 278 |             &(*(::std::ptr::null::<cxl_mem_query_commands<[cxl_command_info; 0]>>())).n_commands
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/query/query_bindings.rs:291:14
[INFO] [stdout]     |
[INFO] [stdout] 291 |             &(*(::std::ptr::null::<cxl_mem_query_commands<[cxl_command_info; 0]>>())).rsvd
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]   --> src/send/send_bindings.rs:35:19
[INFO] [stdout]    |
[INFO] [stdout] 35 |         unsafe { &(*(::std::ptr::null::<__kernel_fd_set>())).fds_bits as *const _ as usize },
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]   --> src/send/send_bindings.rs:85:19
[INFO] [stdout]    |
[INFO] [stdout] 85 |         unsafe { &(*(::std::ptr::null::<__kernel_fsid_t>())).val as *const _ as usize },
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:194:14
[INFO] [stdout]     |
[INFO] [stdout] 194 |             &(*(::std::ptr::null::<cxl_send_command__bindgen_ty_1__bindgen_ty_1>())).opcode
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:207:14
[INFO] [stdout]     |
[INFO] [stdout] 207 |             &(*(::std::ptr::null::<cxl_send_command__bindgen_ty_1__bindgen_ty_1>())).rsvd
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:233:14
[INFO] [stdout]     |
[INFO] [stdout] 233 |             &(*(::std::ptr::null::<cxl_send_command__bindgen_ty_1>())).raw as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:245:14
[INFO] [stdout]     |
[INFO] [stdout] 245 |             &(*(::std::ptr::null::<cxl_send_command__bindgen_ty_1>())).rsvd as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:277:14
[INFO] [stdout]     |
[INFO] [stdout] 277 |             &(*(::std::ptr::null::<cxl_send_command__bindgen_ty_2>())).size as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:289:14
[INFO] [stdout]     |
[INFO] [stdout] 289 |             &(*(::std::ptr::null::<cxl_send_command__bindgen_ty_2>())).rsvd as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:301:14
[INFO] [stdout]     |
[INFO] [stdout] 301 |             &(*(::std::ptr::null::<cxl_send_command__bindgen_ty_2>())).payload as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:333:14
[INFO] [stdout]     |
[INFO] [stdout] 333 |             &(*(::std::ptr::null::<cxl_send_command__bindgen_ty_3>())).size as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:345:14
[INFO] [stdout]     |
[INFO] [stdout] 345 |             &(*(::std::ptr::null::<cxl_send_command__bindgen_ty_3>())).rsvd as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:357:14
[INFO] [stdout]     |
[INFO] [stdout] 357 |             &(*(::std::ptr::null::<cxl_send_command__bindgen_ty_3>())).payload as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:381:19
[INFO] [stdout]     |
[INFO] [stdout] 381 |         unsafe { &(*(::std::ptr::null::<cxl_send_command>())).id as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:391:19
[INFO] [stdout]     |
[INFO] [stdout] 391 |         unsafe { &(*(::std::ptr::null::<cxl_send_command>())).flags as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:401:19
[INFO] [stdout]     |
[INFO] [stdout] 401 |         unsafe { &(*(::std::ptr::null::<cxl_send_command>())).retval as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:411:19
[INFO] [stdout]     |
[INFO] [stdout] 411 |         unsafe { &(*(::std::ptr::null::<cxl_send_command>())).in_ as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/send/send_bindings.rs:421:19
[INFO] [stdout]     |
[INFO] [stdout] 421 |         unsafe { &(*(::std::ptr::null::<cxl_send_command>())).out as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.34s
[INFO] running `Command { std: "docker" "inspect" "43701601ba2e01a5bb770576fb7d3ada0279aefe51196759be2a21cd758fb071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43701601ba2e01a5bb770576fb7d3ada0279aefe51196759be2a21cd758fb071", kill_on_drop: false }`
[INFO] [stdout] 43701601ba2e01a5bb770576fb7d3ada0279aefe51196759be2a21cd758fb071