[INFO] cloning repository https://github.com/jblestang/AIStegano
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jblestang/AIStegano" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjblestang%2FAIStegano", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjblestang%2FAIStegano'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee93f2c1afde68082ac41f8fb6bc83e05dcb56a6
[INFO] checking jblestang/AIStegano against master#c290daa1e5274a52e54a0f49e31bd70192abc606 for pr-133502-23
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjblestang%2FAIStegano" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jblestang/AIStegano
[INFO] finished tweaking git repo https://github.com/jblestang/AIStegano
[INFO] tweaked toml for git repo https://github.com/jblestang/AIStegano written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jblestang/AIStegano on toolchain c290daa1e5274a52e54a0f49e31bd70192abc606
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c290daa1e5274a52e54a0f49e31bd70192abc606" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jblestang/AIStegano already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c290daa1e5274a52e54a0f49e31bd70192abc606" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rtoolbox v0.0.3
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "60b6ff4cd3d42bfe4c009b27d2aae35ce4f90cc35ba8b72a10052c4408c0acc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60b6ff4cd3d42bfe4c009b27d2aae35ce4f90cc35ba8b72a10052c4408c0acc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "60b6ff4cd3d42bfe4c009b27d2aae35ce4f90cc35ba8b72a10052c4408c0acc0" "/opt/rustwide/cargo-home/bin/cargo" "+c290daa1e5274a52e54a0f49e31bd70192abc606" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60b6ff4cd3d42bfe4c009b27d2aae35ce4f90cc35ba8b72a10052c4408c0acc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "60b6ff4cd3d42bfe4c009b27d2aae35ce4f90cc35ba8b72a10052c4408c0acc0" "/opt/rustwide/cargo-home/bin/cargo" "+c290daa1e5274a52e54a0f49e31bd70192abc606" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `block_size`
[INFO] [stdout]   --> src/storage/metadata_discovery.rs:98:39
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn try_read_metadata(path: &Path, block_size: u64) -> Result<Option<SlackMetadata>> {
[INFO] [stdout]    |                                       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/storage/linux/block_device.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let mut buf = vec![0u8; aligned_size];
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_size`
[INFO] [stdout]   --> src/storage/metadata_discovery.rs:98:39
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn try_read_metadata(path: &Path, block_size: u64) -> Result<Option<SlackMetadata>> {
[INFO] [stdout]    |                                       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/storage/linux/block_device.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let mut buf = vec![0u8; aligned_size];
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_partial` is never used
[INFO] [stdout]    --> src/encoding/decoder.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub fn decode_partial(encoded: &EncodedData, available_symbol_ids: &[u32]) -> Result<Vec<u8>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parsers` is never read
[INFO] [stdout]   --> src/storage/linux/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct LinuxSlackBackend {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] 15 |     /// Cached ext4 parser (per-device).
[INFO] [stdout] 16 |     parsers: std::collections::HashMap<std::path::PathBuf, Ext4Parser>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_parser` and `find_device_for_path` are never used
[INFO] [stdout]   --> src/storage/linux/mod.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl LinuxSlackBackend {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn get_parser(&mut self, file_path: &Path) -> Result<&Ext4Parser> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn find_device_for_path(file_path: &Path) -> Result<std::path::PathBuf> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `blocks_count`, `blocks_per_group`, `first_data_block`, and `feature_incompat` are never read
[INFO] [stdout]   --> src/storage/linux/ext4.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Ext4Superblock {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 22 |     pub inodes_count: u32,
[INFO] [stdout] 23 |     pub blocks_count: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 24 |     pub block_size: u64,
[INFO] [stdout] 25 |     pub blocks_per_group: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub first_data_block: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 29 |     pub desc_size: u16,
[INFO] [stdout] 30 |     pub feature_incompat: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Ext4Superblock` 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 `parsers` is never read
[INFO] [stdout]   --> src/storage/linux/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct LinuxSlackBackend {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] 15 |     /// Cached ext4 parser (per-device).
[INFO] [stdout] 16 |     parsers: std::collections::HashMap<std::path::PathBuf, Ext4Parser>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_parser` and `find_device_for_path` are never used
[INFO] [stdout]   --> src/storage/linux/mod.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl LinuxSlackBackend {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn get_parser(&mut self, file_path: &Path) -> Result<&Ext4Parser> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn find_device_for_path(file_path: &Path) -> Result<std::path::PathBuf> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `blocks_count`, `blocks_per_group`, `first_data_block`, and `feature_incompat` are never read
[INFO] [stdout]   --> src/storage/linux/ext4.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Ext4Superblock {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 22 |     pub inodes_count: u32,
[INFO] [stdout] 23 |     pub blocks_count: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 24 |     pub block_size: u64,
[INFO] [stdout] 25 |     pub blocks_per_group: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub first_data_block: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 29 |     pub desc_size: u16,
[INFO] [stdout] 30 |     pub feature_incompat: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Ext4Superblock` 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 15.59s
[INFO] running `Command { std: "docker" "inspect" "60b6ff4cd3d42bfe4c009b27d2aae35ce4f90cc35ba8b72a10052c4408c0acc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60b6ff4cd3d42bfe4c009b27d2aae35ce4f90cc35ba8b72a10052c4408c0acc0", kill_on_drop: false }`
[INFO] [stdout] 60b6ff4cd3d42bfe4c009b27d2aae35ce4f90cc35ba8b72a10052c4408c0acc0
