[INFO] fetching crate btrfs2 1.2.2...
[INFO] building btrfs2-1.2.2 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate btrfs2 1.2.2 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate btrfs2 1.2.2 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate btrfs2 1.2.2
[INFO] finished tweaking crates.io crate btrfs2 1.2.2
[INFO] tweaked toml for crates.io crate btrfs2 1.2.2 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b97f78e6f72531fab88399b40952895ab6d47888ab0215383dd9638aced9937d
[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" "b97f78e6f72531fab88399b40952895ab6d47888ab0215383dd9638aced9937d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b97f78e6f72531fab88399b40952895ab6d47888ab0215383dd9638aced9937d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b97f78e6f72531fab88399b40952895ab6d47888ab0215383dd9638aced9937d", kill_on_drop: false }`
[INFO] [stdout] b97f78e6f72531fab88399b40952895ab6d47888ab0215383dd9638aced9937d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fc3c4559c0cafb153faecb233173efa77aae5bf15a2a384390c8cfb889222f99
[INFO] running `Command { std: "docker" "start" "-a" "fc3c4559c0cafb153faecb233173efa77aae5bf15a2a384390c8cfb889222f99", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling uuid v0.3.1
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling minilzo-sys v0.1.0
[INFO] [stderr]    Compiling nix v0.8.1
[INFO] [stderr]    Compiling flate2 v0.2.20
[INFO] [stderr]    Compiling minilzo v0.1.2
[INFO] [stderr]    Compiling btrfs2 v1.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[ macro_use ]
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:228:42
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 BTRFS_EXTENT_DATA_LZO_COMPRESSION => try! (
[INFO] [stdout]     |                                                      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]  --> src/diskformat/tree/root_tree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::BTreeMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linux::imports::*`
[INFO] [stdout]  --> src/linux/ctypes/ioctl_constants.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use linux::imports::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/types/file_descriptor.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/types/file_descriptor.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:186:3
[INFO] [stdout]     |
[INFO] [stdout] 186 |         try! (
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:203:3
[INFO] [stdout]     |
[INFO] [stdout] 203 |         try! (
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:229:4
[INFO] [stdout]     |
[INFO] [stdout] 229 |             try! (
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:278:2
[INFO] [stdout]     |
[INFO] [stdout] 278 |     try! (
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/operations/fiemap.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try! (
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/operations/fiemap.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/filesystem_info.rs:139:4
[INFO] [stdout]     |
[INFO] [stdout] 139 |             try! (
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/operations/space_info.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:196:14
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 io_error.description ())
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/linux/operations/fiemap.rs:186:13
[INFO] [stdout]     |
[INFO] [stdout] 186 |     if let Err(e) = fiemap_result {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/linux/operations/filesystem_info.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Err(e) = get_fs_info_result {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/linux/operations/filesystem_info.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |     if let Err(e) = get_dev_info_result {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/linux/operations/space_info.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout] 134 |     if let Err(e) = get_space_args_real_result {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: reference to packed field is unaligned
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:215:7
[INFO] [stdout]     |
[INFO] [stdout] 215 |                         self.data ().other_encoding)
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unaligned_references)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #82523 <https://github.com/rust-lang/rust/issues/82523>
[INFO] [stdout]     = note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lzo2a_decompress`
[INFO] [stdout]   --> src/compress/lzo.rs:28:2
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     fn lzo2a_decompress (
[INFO] [stdout] 29 | |         src: * const u8,
[INFO] [stdout] 30 | |         src_len: libc::c_uint,
[INFO] [stdout] 31 | |         dst: * const u8,
[INFO] [stdout] 32 | |         dst_len: * mut libc::c_uint,
[INFO] [stdout] 33 | |         wrkmem: * const u8,
[INFO] [stdout] 34 | |     ) -> libc::c_int;
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `superblock`
[INFO] [stdout]   --> src/diskformat/superblock.rs:43:2
[INFO] [stdout]    |
[INFO] [stdout] 43 |     superblock: & 'a BtrfsSuperblock,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/compress/lzo.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 |             error)
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 116 |             "{}", error)
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 115 |         std::panic::panic_any(
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:317:7
[INFO] [stdout]     |
[INFO] [stdout] 317 | /                         format! (
[INFO] [stdout] 318 | |                             "Unrecognised inline extent data compression {}",
[INFO] [stdout] 319 | |                             self.data ().compression)),
[INFO] [stdout]     | |_____________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 317 |                         
[INFO] [stdout] 318 |                             "Unrecognised inline extent data compression {}",
[INFO] [stdout] 319 |                             self.data ().compression),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compress/lzo.rs:109:2
[INFO] [stdout]     |
[INFO] [stdout] 109 | /     io::stderr ().write_all (
[INFO] [stdout] 110 | |         b"LZO\r\n");
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compress/lzo.rs:120:2
[INFO] [stdout]     |
[INFO] [stdout] 120 | /     io::stderr ().write_all (
[INFO] [stdout] 121 | |         b"LZO2\r\n");
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compress/lzo.rs:148:2
[INFO] [stdout]     |
[INFO] [stdout] 148 | /     io::stderr ().write_all (
[INFO] [stdout] 149 | |         b"LZO3\r\n");
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:236:1
[INFO] [stdout]     |
[INFO] [stdout] 236 | / io::stdout ().write_fmt (
[INFO] [stdout] 237 | |     format_args! (
[INFO] [stdout] 238 | |         "LZO SUCCESS {} -> {} bytes\r\n",
[INFO] [stdout] 239 | |         raw_data.len (),
[INFO] [stdout] 240 | |         uncompressed_data.len ()));
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.75s
[INFO] running `Command { std: "docker" "inspect" "fc3c4559c0cafb153faecb233173efa77aae5bf15a2a384390c8cfb889222f99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc3c4559c0cafb153faecb233173efa77aae5bf15a2a384390c8cfb889222f99", kill_on_drop: false }`
[INFO] [stdout] fc3c4559c0cafb153faecb233173efa77aae5bf15a2a384390c8cfb889222f99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d318cc4d03c414ded2d1460b1ede49e60e87f22d4194e08f6f92be195493c10
[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" "9d318cc4d03c414ded2d1460b1ede49e60e87f22d4194e08f6f92be195493c10", kill_on_drop: false }`
[INFO] [stderr]    Compiling btrfs2 v1.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[ macro_use ]
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:228:42
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 BTRFS_EXTENT_DATA_LZO_COMPRESSION => try! (
[INFO] [stdout]     |                                                      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]  --> src/diskformat/tree/root_tree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::BTreeMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linux::imports::*`
[INFO] [stdout]  --> src/linux/ctypes/ioctl_constants.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use linux::imports::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/types/file_descriptor.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/types/file_descriptor.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:186:3
[INFO] [stdout]     |
[INFO] [stdout] 186 |         try! (
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:203:3
[INFO] [stdout]     |
[INFO] [stdout] 203 |         try! (
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:229:4
[INFO] [stdout]     |
[INFO] [stdout] 229 |             try! (
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:278:2
[INFO] [stdout]     |
[INFO] [stdout] 278 |     try! (
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/operations/fiemap.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try! (
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/operations/fiemap.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/filesystem_info.rs:139:4
[INFO] [stdout]     |
[INFO] [stdout] 139 |             try! (
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/operations/space_info.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:196:14
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 io_error.description ())
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/linux/operations/fiemap.rs:186:13
[INFO] [stdout]     |
[INFO] [stdout] 186 |     if let Err(e) = fiemap_result {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/linux/operations/filesystem_info.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Err(e) = get_fs_info_result {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/linux/operations/filesystem_info.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |     if let Err(e) = get_dev_info_result {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/linux/operations/space_info.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout] 134 |     if let Err(e) = get_space_args_real_result {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: reference to packed field is unaligned
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:215:7
[INFO] [stdout]     |
[INFO] [stdout] 215 |                         self.data ().other_encoding)
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unaligned_references)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #82523 <https://github.com/rust-lang/rust/issues/82523>
[INFO] [stdout]     = note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lzo2a_decompress`
[INFO] [stdout]   --> src/compress/lzo.rs:28:2
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     fn lzo2a_decompress (
[INFO] [stdout] 29 | |         src: * const u8,
[INFO] [stdout] 30 | |         src_len: libc::c_uint,
[INFO] [stdout] 31 | |         dst: * const u8,
[INFO] [stdout] 32 | |         dst_len: * mut libc::c_uint,
[INFO] [stdout] 33 | |         wrkmem: * const u8,
[INFO] [stdout] 34 | |     ) -> libc::c_int;
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `superblock`
[INFO] [stdout]   --> src/diskformat/superblock.rs:43:2
[INFO] [stdout]    |
[INFO] [stdout] 43 |     superblock: & 'a BtrfsSuperblock,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/compress/lzo.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 |             error)
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 116 |             "{}", error)
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 115 |         std::panic::panic_any(
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:317:7
[INFO] [stdout]     |
[INFO] [stdout] 317 | /                         format! (
[INFO] [stdout] 318 | |                             "Unrecognised inline extent data compression {}",
[INFO] [stdout] 319 | |                             self.data ().compression)),
[INFO] [stdout]     | |_____________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 317 |                         
[INFO] [stdout] 318 |                             "Unrecognised inline extent data compression {}",
[INFO] [stdout] 319 |                             self.data ().compression),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compress/lzo.rs:109:2
[INFO] [stdout]     |
[INFO] [stdout] 109 | /     io::stderr ().write_all (
[INFO] [stdout] 110 | |         b"LZO\r\n");
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compress/lzo.rs:120:2
[INFO] [stdout]     |
[INFO] [stdout] 120 | /     io::stderr ().write_all (
[INFO] [stdout] 121 | |         b"LZO2\r\n");
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compress/lzo.rs:148:2
[INFO] [stdout]     |
[INFO] [stdout] 148 | /     io::stderr ().write_all (
[INFO] [stdout] 149 | |         b"LZO3\r\n");
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:236:1
[INFO] [stdout]     |
[INFO] [stdout] 236 | / io::stdout ().write_fmt (
[INFO] [stdout] 237 | |     format_args! (
[INFO] [stdout] 238 | |         "LZO SUCCESS {} -> {} bytes\r\n",
[INFO] [stdout] 239 | |         raw_data.len (),
[INFO] [stdout] 240 | |         uncompressed_data.len ()));
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[ macro_use ]
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:228:42
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 BTRFS_EXTENT_DATA_LZO_COMPRESSION => try! (
[INFO] [stdout]     |                                                      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]  --> src/diskformat/tree/root_tree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::BTreeMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linux::imports::*`
[INFO] [stdout]  --> src/linux/ctypes/ioctl_constants.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use linux::imports::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/types/file_descriptor.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/types/file_descriptor.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:186:3
[INFO] [stdout]     |
[INFO] [stdout] 186 |         try! (
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:203:3
[INFO] [stdout]     |
[INFO] [stdout] 203 |         try! (
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:229:4
[INFO] [stdout]     |
[INFO] [stdout] 229 |             try! (
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:278:2
[INFO] [stdout]     |
[INFO] [stdout] 278 |     try! (
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/operations/fiemap.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try! (
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/operations/fiemap.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/linux/operations/filesystem_info.rs:139:4
[INFO] [stdout]     |
[INFO] [stdout] 139 |             try! (
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/linux/operations/space_info.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 |             try! (
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/linux/operations/deduplicate.rs:196:14
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 io_error.description ())
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/linux/operations/fiemap.rs:186:13
[INFO] [stdout]     |
[INFO] [stdout] 186 |     if let Err(e) = fiemap_result {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/linux/operations/filesystem_info.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Err(e) = get_fs_info_result {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/linux/operations/filesystem_info.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |     if let Err(e) = get_dev_info_result {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/linux/operations/space_info.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout] 134 |     if let Err(e) = get_space_args_real_result {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: reference to packed field is unaligned
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:215:7
[INFO] [stdout]     |
[INFO] [stdout] 215 |                         self.data ().other_encoding)
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unaligned_references)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #82523 <https://github.com/rust-lang/rust/issues/82523>
[INFO] [stdout]     = note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lzo2a_decompress`
[INFO] [stdout]   --> src/compress/lzo.rs:28:2
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     fn lzo2a_decompress (
[INFO] [stdout] 29 | |         src: * const u8,
[INFO] [stdout] 30 | |         src_len: libc::c_uint,
[INFO] [stdout] 31 | |         dst: * const u8,
[INFO] [stdout] 32 | |         dst_len: * mut libc::c_uint,
[INFO] [stdout] 33 | |         wrkmem: * const u8,
[INFO] [stdout] 34 | |     ) -> libc::c_int;
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `superblock`
[INFO] [stdout]   --> src/diskformat/superblock.rs:43:2
[INFO] [stdout]    |
[INFO] [stdout] 43 |     superblock: & 'a BtrfsSuperblock,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/compress/lzo.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 |             error)
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 116 |             "{}", error)
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 115 |         std::panic::panic_any(
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:317:7
[INFO] [stdout]     |
[INFO] [stdout] 317 | /                         format! (
[INFO] [stdout] 318 | |                             "Unrecognised inline extent data compression {}",
[INFO] [stdout] 319 | |                             self.data ().compression)),
[INFO] [stdout]     | |_____________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 317 |                         
[INFO] [stdout] 318 |                             "Unrecognised inline extent data compression {}",
[INFO] [stdout] 319 |                             self.data ().compression),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compress/lzo.rs:109:2
[INFO] [stdout]     |
[INFO] [stdout] 109 | /     io::stderr ().write_all (
[INFO] [stdout] 110 | |         b"LZO\r\n");
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compress/lzo.rs:120:2
[INFO] [stdout]     |
[INFO] [stdout] 120 | /     io::stderr ().write_all (
[INFO] [stdout] 121 | |         b"LZO2\r\n");
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compress/lzo.rs:148:2
[INFO] [stdout]     |
[INFO] [stdout] 148 | /     io::stderr ().write_all (
[INFO] [stdout] 149 | |         b"LZO3\r\n");
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/diskformat/item/extent_data.rs:236:1
[INFO] [stdout]     |
[INFO] [stdout] 236 | / io::stdout ().write_fmt (
[INFO] [stdout] 237 | |     format_args! (
[INFO] [stdout] 238 | |         "LZO SUCCESS {} -> {} bytes\r\n",
[INFO] [stdout] 239 | |         raw_data.len (),
[INFO] [stdout] 240 | |         uncompressed_data.len ()));
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "9d318cc4d03c414ded2d1460b1ede49e60e87f22d4194e08f6f92be195493c10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d318cc4d03c414ded2d1460b1ede49e60e87f22d4194e08f6f92be195493c10", kill_on_drop: false }`
[INFO] [stdout] 9d318cc4d03c414ded2d1460b1ede49e60e87f22d4194e08f6f92be195493c10
