[INFO] fetching crate immo 0.1.2...
[INFO] checking immo-0.1.2 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate immo 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate immo 0.1.2 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate immo 0.1.2
[INFO] finished tweaking crates.io crate immo 0.1.2
[INFO] tweaked toml for crates.io crate immo 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate immo 0.1.2 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" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flate2 v1.0.25
[INFO] [stderr]   Downloaded log v0.4.17
[INFO] [stderr]   Downloaded miniz_oxide v0.6.2
[INFO] [stderr]   Downloaded png v0.17.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7aabb3408bec7ad0d599ef5ffe94847c1487c34095f4fd9d0d5b0cfcc9893cef
[INFO] running `Command { std: "docker" "start" "-a" "7aabb3408bec7ad0d599ef5ffe94847c1487c34095f4fd9d0d5b0cfcc9893cef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7aabb3408bec7ad0d599ef5ffe94847c1487c34095f4fd9d0d5b0cfcc9893cef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aabb3408bec7ad0d599ef5ffe94847c1487c34095f4fd9d0d5b0cfcc9893cef", kill_on_drop: false }`
[INFO] [stdout] 7aabb3408bec7ad0d599ef5ffe94847c1487c34095f4fd9d0d5b0cfcc9893cef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4839b65b0df38de4c5aa1c83bf227bd42c5362f3dfcd1b96abdb9eb7c3a54fc3
[INFO] running `Command { std: "docker" "start" "-a" "4839b65b0df38de4c5aa1c83bf227bd42c5362f3dfcd1b96abdb9eb7c3a54fc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking immo v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/error.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl ImageError {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 40 |     pub(crate) fn new<E>(kind: ErrorKind, error: E) -> Self
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Custom` is never constructed
[INFO] [stdout]   --> src/error.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | enum _ImageError {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] 64 |     Simple(ErrorKind),
[INFO] [stdout] 65 |     Custom((ErrorKind, Box<dyn error::Error + Send + Sync>)),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking flate2 v1.0.25
[INFO] [stderr]     Checking png v0.17.7
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/error.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl ImageError {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 40 |     pub(crate) fn new<E>(kind: ErrorKind, error: E) -> Self
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Custom` is never constructed
[INFO] [stdout]   --> src/error.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | enum _ImageError {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] 64 |     Simple(ErrorKind),
[INFO] [stdout] 65 |     Custom((ErrorKind, Box<dyn error::Error + Send + Sync>)),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LIGHT_AQUA` is never used
[INFO] [stdout]   --> examples/line.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const LIGHT_AQUA: (u8, u8, u8, u8) = (170, 222, 240, 255);
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DARK_AQUA` is never used
[INFO] [stdout]   --> examples/line.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const DARK_AQUA: (u8, u8, u8, u8) = (0, 140, 180, 255);
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AQUA` is never used
[INFO] [stdout]   --> examples/line.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const AQUA: (u8, u8, u8, u8) = (0, 222, 255, 255);
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "4839b65b0df38de4c5aa1c83bf227bd42c5362f3dfcd1b96abdb9eb7c3a54fc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4839b65b0df38de4c5aa1c83bf227bd42c5362f3dfcd1b96abdb9eb7c3a54fc3", kill_on_drop: false }`
[INFO] [stdout] 4839b65b0df38de4c5aa1c83bf227bd42c5362f3dfcd1b96abdb9eb7c3a54fc3