[INFO] cloning repository https://github.com/shadowbiz/image-differer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shadowbiz/image-differer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshadowbiz%2Fimage-differer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshadowbiz%2Fimage-differer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cefe689328fce7d6c4e0dd8a1da60212f13f841b
[INFO] testing shadowbiz/image-differer against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshadowbiz%2Fimage-differer" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/shadowbiz/image-differer
[INFO] finished tweaking git repo https://github.com/shadowbiz/image-differer
[INFO] tweaked toml for git repo https://github.com/shadowbiz/image-differer written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shadowbiz/image-differer on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shadowbiz/image-differer 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be3213c2b746bdddb84299e019dceafdadee0909a16c240d50c0205ec7367e6c
[INFO] running `Command { std: "docker" "start" "-a" "be3213c2b746bdddb84299e019dceafdadee0909a16c240d50c0205ec7367e6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be3213c2b746bdddb84299e019dceafdadee0909a16c240d50c0205ec7367e6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be3213c2b746bdddb84299e019dceafdadee0909a16c240d50c0205ec7367e6c", kill_on_drop: false }`
[INFO] [stdout] be3213c2b746bdddb84299e019dceafdadee0909a16c240d50c0205ec7367e6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] e483319a78e1336af37e3eac2d6fceacb365cd36f0b0642a30bf985043af4747
[INFO] running `Command { std: "docker" "start" "-a" "e483319a78e1336af37e3eac2d6fceacb365cd36f0b0642a30bf985043af4747", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling deflate v1.0.0
[INFO] [stderr]    Compiling miniz_oxide v0.5.3
[INFO] [stderr]    Compiling png v0.17.5
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling differer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/main.rs:36:39
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Pixel::RGBA_U8 { r, g, b, a } => {
[INFO] [stdout]    |                                       ^ help: try ignoring the field: `a: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_pixel_rgba_u8` is never used
[INFO] [stdout]   --> src/main.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Pixel {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 13 |     pub fn to_pixel_rgba_u8(&self) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]   --> src/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct Image {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 52 |     width: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 53 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.15s
[INFO] running `Command { std: "docker" "inspect" "e483319a78e1336af37e3eac2d6fceacb365cd36f0b0642a30bf985043af4747", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e483319a78e1336af37e3eac2d6fceacb365cd36f0b0642a30bf985043af4747", kill_on_drop: false }`
[INFO] [stdout] e483319a78e1336af37e3eac2d6fceacb365cd36f0b0642a30bf985043af4747
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 0c4123fcd36cb7f3b77d80b2c0b9f38870322a47aa91d1c6fdc1edcdcf51f52d
[INFO] running `Command { std: "docker" "start" "-a" "0c4123fcd36cb7f3b77d80b2c0b9f38870322a47aa91d1c6fdc1edcdcf51f52d", kill_on_drop: false }`
[INFO] [stderr]    Compiling differer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/main.rs:36:39
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Pixel::RGBA_U8 { r, g, b, a } => {
[INFO] [stdout]    |                                       ^ help: try ignoring the field: `a: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_pixel_rgba_u8` is never used
[INFO] [stdout]   --> src/main.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Pixel {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 13 |     pub fn to_pixel_rgba_u8(&self) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]   --> src/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct Image {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 52 |     width: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 53 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "0c4123fcd36cb7f3b77d80b2c0b9f38870322a47aa91d1c6fdc1edcdcf51f52d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c4123fcd36cb7f3b77d80b2c0b9f38870322a47aa91d1c6fdc1edcdcf51f52d", kill_on_drop: false }`
[INFO] [stdout] 0c4123fcd36cb7f3b77d80b2c0b9f38870322a47aa91d1c6fdc1edcdcf51f52d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 21187183e9fa032083fbca12c697592b7e2a67515269c4e85a77a8154905a9ed
[INFO] running `Command { std: "docker" "start" "-a" "21187183e9fa032083fbca12c697592b7e2a67515269c4e85a77a8154905a9ed", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/main.rs:36:39
[INFO] [stderr]    |
[INFO] [stderr] 36 |             Pixel::RGBA_U8 { r, g, b, a } => {
[INFO] [stderr]    |                                       ^ help: try ignoring the field: `a: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `to_pixel_rgba_u8` is never used
[INFO] [stderr]   --> src/main.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl Pixel {
[INFO] [stderr]    | ---------- method in this implementation
[INFO] [stderr] 13 |     pub fn to_pixel_rgba_u8(&self) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `width` and `height` are never read
[INFO] [stderr]   --> src/main.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 51 | struct Image {
[INFO] [stderr]    |        ----- fields in this struct
[INFO] [stderr] 52 |     width: u32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 53 |     height: u32,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `differer` (bin "differer" test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/differer-7806873a1b7547a2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "21187183e9fa032083fbca12c697592b7e2a67515269c4e85a77a8154905a9ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21187183e9fa032083fbca12c697592b7e2a67515269c4e85a77a8154905a9ed", kill_on_drop: false }`
[INFO] [stdout] 21187183e9fa032083fbca12c697592b7e2a67515269c4e85a77a8154905a9ed