[INFO] fetching crate fax 0.2.0...
[INFO] checking fax-0.2.0 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate fax 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate fax 0.2.0 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fax 0.2.0
[INFO] finished tweaking crates.io crate fax 0.2.0
[INFO] tweaked toml for crates.io crate fax 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate fax 0.2.0 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fax_derive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0db97c5b284dd45df58414b573c9a1c2d763949b38d427cbdd361e9d7bd6d57
[INFO] running `Command { std: "docker" "start" "-a" "e0db97c5b284dd45df58414b573c9a1c2d763949b38d427cbdd361e9d7bd6d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0db97c5b284dd45df58414b573c9a1c2d763949b38d427cbdd361e9d7bd6d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0db97c5b284dd45df58414b573c9a1c2d763949b38d427cbdd361e9d7bd6d57", kill_on_drop: false }`
[INFO] [stdout] e0db97c5b284dd45df58414b573c9a1c2d763949b38d427cbdd361e9d7bd6d57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a01e0347043b559431231393dbf3ed34fc1cb0316d309a3c2f6fbe7c572e3f3
[INFO] running `Command { std: "docker" "start" "-a" "4a01e0347043b559431231393dbf3ed34fc1cb0316d309a3c2f6fbe7c572e3f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling fax_derive v0.1.0
[INFO] [stderr]     Checking fax v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Empty` is never constructed
[INFO] [stdout]  --> src/maps.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Entry<T: Copy + 'static> {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 5 |     Empty,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Empty` is never constructed
[INFO] [stdout]  --> src/maps.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Entry<T: Copy + 'static> {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 5 |     Empty,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 4 arguments but 3 arguments were supplied
[INFO] [stdout]   --> examples/fax2pbm.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |       decoder::decode_g4(data.iter().cloned(), width, |transitions| {
[INFO] [stdout]    |  _____^^^^^^^^^^^^^^^^^^______________________________-
[INFO] [stdout] 15 | |         for c in pels(transitions, width) {
[INFO] [stdout] 16 | |             let bit = match c {
[INFO] [stdout] 17 | |                 Color::Black => Bits { data: 1, len: 1 },
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |         height += 1;
[INFO] [stdout] 24 | |     });
[INFO] [stdout]    | |_____- an argument of type `Option<u16>` is missing
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> /opt/rustwide/workdir/src/decoder.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn decode_g4(input: impl Iterator<Item=u8>, width: u16, height: Option<u16>, mut line_cb: impl FnMut(&[u16])) -> Option<()> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] help: provide the argument
[INFO] [stdout]    |
[INFO] [stdout] 14 ~     decoder::decode_g4(data.iter().cloned(), width, /* Option<u16> */, |transitions| {
[INFO] [stdout] 15 +         for c in pels(transitions, width) {
[INFO] [stdout] 16 +             let bit = match c {
[INFO] [stdout] 17 +                 Color::Black => Bits { data: 1, len: 1 },
[INFO] [stdout] 18 +                 Color::White => Bits { data: 0, len: 1 }
[INFO] [stdout] 19 +             };
[INFO] [stdout] 20 +             writer.write(bit);
[INFO] [stdout] 21 +         }
[INFO] [stdout] 22 +         writer.pad();
[INFO] [stdout] 23 +         height += 1;
[INFO] [stdout] 24 ~     });
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fax` (example "fax2pbm") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4a01e0347043b559431231393dbf3ed34fc1cb0316d309a3c2f6fbe7c572e3f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a01e0347043b559431231393dbf3ed34fc1cb0316d309a3c2f6fbe7c572e3f3", kill_on_drop: false }`
[INFO] [stdout] 4a01e0347043b559431231393dbf3ed34fc1cb0316d309a3c2f6fbe7c572e3f3
