[INFO] fetching crate darkroom 0.7.4...
[INFO] testing darkroom-0.7.4 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate darkroom 0.7.4 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate darkroom 0.7.4 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate darkroom 0.7.4
[INFO] finished tweaking crates.io crate darkroom 0.7.4
[INFO] tweaked toml for crates.io crate darkroom 0.7.4 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate darkroom 0.7.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 503d6e2e27cc16fbf5d9e48079a34da9550e458586ea48b0cffd4f7155dbbbc1
[INFO] running `Command { std: "docker" "start" "-a" "503d6e2e27cc16fbf5d9e48079a34da9550e458586ea48b0cffd4f7155dbbbc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "503d6e2e27cc16fbf5d9e48079a34da9550e458586ea48b0cffd4f7155dbbbc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "503d6e2e27cc16fbf5d9e48079a34da9550e458586ea48b0cffd4f7155dbbbc1", kill_on_drop: false }`
[INFO] [stdout] 503d6e2e27cc16fbf5d9e48079a34da9550e458586ea48b0cffd4f7155dbbbc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0980eb31aea8346bba2756fd996fec3fac25940a117d9fc6a5ed8918f94432ba
[INFO] running `Command { std: "docker" "start" "-a" "0980eb31aea8346bba2756fd996fec3fac25940a117d9fc6a5ed8918f94432ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling futures-sink v0.3.15
[INFO] [stderr]    Compiling futures-io v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling weezl v0.1.5
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]    Compiling chunked_transfer v1.4.0
[INFO] [stderr]    Compiling bytemuck v1.7.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling argh_shared v0.1.5
[INFO] [stderr]    Compiling shell-words v1.0.0
[INFO] [stderr]    Compiling tokio v1.7.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling line-wrap v0.1.1
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling pretty_assertions v0.7.2
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling http-body v0.4.2
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling ordered-float v2.5.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling gif v0.11.2
[INFO] [stderr]    Compiling colored-diff v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/colored-diff-0.2.2/src/lib.rs:102:46
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 for blob in text.split('\n').intersperse(NL_LEFT) {
[INFO] [stdout]     |                                              ^^^^^^^^^^^ multiple `intersperse` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `std::str::Split<'a, P>`
[INFO] [stdout]     = note: candidate #2 is defined in an impl of the trait `Itertools` for the type `T`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 for blob in Iterator::intersperse(text.split('\n'), NL_LEFT) {
[INFO] [stdout]     |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 for blob in Itertools::intersperse(text.split('\n'), NL_LEFT) {
[INFO] [stdout]     |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/colored-diff-0.2.2/src/lib.rs:107:46
[INFO] [stdout]     |
[INFO] [stdout] 107 |                 for blob in text.split('\n').intersperse(NL_LEFT) {
[INFO] [stdout]     |                                              ^^^^^^^^^^^ multiple `intersperse` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `std::str::Split<'a, P>`
[INFO] [stdout]     = note: candidate #2 is defined in an impl of the trait `Itertools` for the type `T`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 107 |                 for blob in Iterator::intersperse(text.split('\n'), NL_LEFT) {
[INFO] [stdout]     |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 107 |                 for blob in Itertools::intersperse(text.split('\n'), NL_LEFT) {
[INFO] [stdout]     |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/colored-diff-0.2.2/src/lib.rs:121:46
[INFO] [stdout]     |
[INFO] [stdout] 121 |                 for blob in text.split('\n').intersperse(NL_RIGHT) {
[INFO] [stdout]     |                                              ^^^^^^^^^^^ multiple `intersperse` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `std::str::Split<'a, P>`
[INFO] [stdout]     = note: candidate #2 is defined in an impl of the trait `Itertools` for the type `T`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 121 |                 for blob in Iterator::intersperse(text.split('\n'), NL_RIGHT) {
[INFO] [stdout]     |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 121 |                 for blob in Itertools::intersperse(text.split('\n'), NL_RIGHT) {
[INFO] [stdout]     |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/colored-diff-0.2.2/src/lib.rs:126:46
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 for blob in text.split('\n').intersperse(NL_RIGHT) {
[INFO] [stdout]     |                                              ^^^^^^^^^^^ multiple `intersperse` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `std::str::Split<'a, P>`
[INFO] [stdout]     = note: candidate #2 is defined in an impl of the trait `Itertools` for the type `T`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 for blob in Iterator::intersperse(text.split('\n'), NL_RIGHT) {
[INFO] [stdout]     |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 for blob in Itertools::intersperse(text.split('\n'), NL_RIGHT) {
[INFO] [stdout]     |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `colored-diff` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0980eb31aea8346bba2756fd996fec3fac25940a117d9fc6a5ed8918f94432ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0980eb31aea8346bba2756fd996fec3fac25940a117d9fc6a5ed8918f94432ba", kill_on_drop: false }`
[INFO] [stdout] 0980eb31aea8346bba2756fd996fec3fac25940a117d9fc6a5ed8918f94432ba