[INFO] fetching crate ppm_steganography 0.1.0...
[INFO] checking ppm_steganography-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ppm_steganography 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate ppm_steganography 0.1.0
[INFO] finished tweaking crates.io crate ppm_steganography 0.1.0
[INFO] tweaked toml for crates.io crate ppm_steganography 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ppm_steganography 0.1.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ppm_steganography 0.1.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9de8f68da117b56b6ab6cf8d8cc054256493d0bf0ed86a0bd4d7c41fb415c0f0
[INFO] running `Command { std: "docker" "start" "-a" "9de8f68da117b56b6ab6cf8d8cc054256493d0bf0ed86a0bd4d7c41fb415c0f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9de8f68da117b56b6ab6cf8d8cc054256493d0bf0ed86a0bd4d7c41fb415c0f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9de8f68da117b56b6ab6cf8d8cc054256493d0bf0ed86a0bd4d7c41fb415c0f0", kill_on_drop: false }`
[INFO] [stdout] 9de8f68da117b56b6ab6cf8d8cc054256493d0bf0ed86a0bd4d7c41fb415c0f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39c64a2347f9ce8536170e990ea7cd4019f748271ee1fdfe0c0e8f623300fb7a
[INFO] running `Command { std: "docker" "start" "-a" "39c64a2347f9ce8536170e990ea7cd4019f748271ee1fdfe0c0e8f623300fb7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.42
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking crossbeam-utils v0.8.11
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking bytemuck v1.11.0
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.10
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking rayon-core v1.9.3
[INFO] [stderr]     Checking rayon v1.5.3
[INFO] [stderr]     Checking jpeg-decoder v0.2.6
[INFO] [stderr]     Checking tiff v0.7.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.11
[INFO] [stderr]     Checking pin-project v1.0.11
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]     Checking exr v1.4.2
[INFO] [stderr]     Checking image v0.24.3
[INFO] [stderr]     Checking ppm_steganography v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]  --> examples/decode_img.rs:3:60
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let decoder = ppm_steganography::decoder::Decoder::new(std::path::PathBuf::from_str("examples/kiwi_hidden_image.ppm").unwrap()).unwra...
[INFO] [stdout]   |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]  --> examples/decode_img.rs:4:53
[INFO] [stdout]   |
[INFO] [stdout] 4 |     decoder.decode().unwrap().unwrap().save_to_file(std::path::PathBuf::from_str("examples/hidden_image.ppm").unwrap()).unwrap();
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ppm_steganography` (example "decode_img") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `ppm_steganography` (example "encode_img") due to 3 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]  --> examples/encode_img.rs:5:64
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut encoder = ppm_steganography::encoder::Encoder::new(std::path::PathBuf::from_str("examples/kiwi.ppm").unwrap()).unwrap();
[INFO] [stdout]   |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]  --> examples/encode_img.rs:7:34
[INFO] [stdout]   |
[INFO] [stdout] 7 |     encoder.try_update_from_file(std::path::PathBuf::from_str("examples/to_hide.ppm").unwrap()).unwrap();
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]  --> examples/encode_img.rs:9:29
[INFO] [stdout]   |
[INFO] [stdout] 9 |     encoder.encode_and_save(std::path::PathBuf::from_str("examples/kiwi_hidden_image.ppm").unwrap()).unwrap();
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]  --> examples/encode.rs:4:64
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut encoder = ppm_steganography::encoder::Encoder::new(std::path::PathBuf::from_str("examples/kiwi.ppm").unwrap()).unwrap();
[INFO] [stdout]   |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]  --> examples/encode.rs:6:29
[INFO] [stdout]   |
[INFO] [stdout] 6 |     encoder.encode_and_save(std::path::PathBuf::from_str("examples/kiwi_message.ppm").unwrap()).unwrap();
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ppm_steganography` (example "encode") due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]  --> examples/decode.rs:4:60
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let decoder = ppm_steganography::decoder::Decoder::new(std::path::PathBuf::from_str("examples/kiwi_message.ppm").unwrap()).unwrap();
[INFO] [stdout]   |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ppm_steganography` (example "decode") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "39c64a2347f9ce8536170e990ea7cd4019f748271ee1fdfe0c0e8f623300fb7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39c64a2347f9ce8536170e990ea7cd4019f748271ee1fdfe0c0e8f623300fb7a", kill_on_drop: false }`
[INFO] [stdout] 39c64a2347f9ce8536170e990ea7cd4019f748271ee1fdfe0c0e8f623300fb7a
