[INFO] cloning repository https://github.com/jsmenzies/rust-image-analyser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jsmenzies/rust-image-analyser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsmenzies%2Frust-image-analyser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsmenzies%2Frust-image-analyser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e129e3c4ed802d94c203410168a7ebc3d7eb6f9
[INFO] checking jsmenzies/rust-image-analyser against try#0f68263c719c986445acfdd2b05d69e200c95710 for pr-97183
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsmenzies%2Frust-image-analyser" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jsmenzies/rust-image-analyser on toolchain 0f68263c719c986445acfdd2b05d69e200c95710
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0f68263c719c986445acfdd2b05d69e200c95710" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jsmenzies/rust-image-analyser
[INFO] finished tweaking git repo https://github.com/jsmenzies/rust-image-analyser
[INFO] tweaked toml for git repo https://github.com/jsmenzies/rust-image-analyser written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/jsmenzies/rust-image-analyser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0f68263c719c986445acfdd2b05d69e200c95710" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+0f68263c719c986445acfdd2b05d69e200c95710" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0a0b9d740e9fa7a946520df6113331ee9c0b7adc421449b348783dceaa1b014
[INFO] running `Command { std: "docker" "start" "-a" "e0a0b9d740e9fa7a946520df6113331ee9c0b7adc421449b348783dceaa1b014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0a0b9d740e9fa7a946520df6113331ee9c0b7adc421449b348783dceaa1b014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0a0b9d740e9fa7a946520df6113331ee9c0b7adc421449b348783dceaa1b014", kill_on_drop: false }`
[INFO] [stdout] e0a0b9d740e9fa7a946520df6113331ee9c0b7adc421449b348783dceaa1b014
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+0f68263c719c986445acfdd2b05d69e200c95710" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47d8ac96a84181296827f6ce50ac5a6f40860f0b31880e3390f72730614eb79a
[INFO] running `Command { std: "docker" "start" "-a" "47d8ac96a84181296827f6ce50ac5a6f40860f0b31880e3390f72730614eb79a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking mutate_once v0.1.1
[INFO] [stderr]     Checking imagesize v0.9.0
[INFO] [stderr]     Checking kamadak-exif v0.5.4
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]     Checking crypto-common v0.1.3
[INFO] [stderr]     Checking block-buffer v0.10.2
[INFO] [stderr]     Checking digest v0.10.3
[INFO] [stderr]     Checking md-5 v0.10.1
[INFO] [stderr]     Checking rust-image-analyser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/exif.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |         Ok(result) => {
[INFO] [stdout]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/exif.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |         Ok(result) => {
[INFO] [stdout]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ExifParseError` is never constructed
[INFO] [stdout]  --> src/error.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum ApplicationError {
[INFO] [stdout]   |          ---------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |     ExifParseError(PathBuf, String),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]   = note: `ApplicationError` 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 `root` is never read
[INFO] [stdout]   --> src/location.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Location<> {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 10 |     root: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Location` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `update_exif_details` is never used
[INFO] [stdout]   --> src/metadata.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn update_exif_details(&mut self, exif_details: Option<ExifDetails>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_exif_details` is never used
[INFO] [stdout]   --> src/exif.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn parse_exif_details(path: &Path) -> Result<ExifDetails, ApplicationError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ExifParseError` is never constructed
[INFO] [stdout]  --> src/error.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum ApplicationError {
[INFO] [stdout]   |          ---------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |     ExifParseError(PathBuf, String),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]   = note: `ApplicationError` 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 `root` is never read
[INFO] [stdout]   --> src/location.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Location<> {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 10 |     root: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Location` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `update_exif_details` is never used
[INFO] [stdout]   --> src/metadata.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn update_exif_details(&mut self, exif_details: Option<ExifDetails>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_exif_details` is never used
[INFO] [stdout]   --> src/exif.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn parse_exif_details(path: &Path) -> Result<ExifDetails, ApplicationError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.34s
[INFO] running `Command { std: "docker" "inspect" "47d8ac96a84181296827f6ce50ac5a6f40860f0b31880e3390f72730614eb79a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47d8ac96a84181296827f6ce50ac5a6f40860f0b31880e3390f72730614eb79a", kill_on_drop: false }`
[INFO] [stdout] 47d8ac96a84181296827f6ce50ac5a6f40860f0b31880e3390f72730614eb79a