[INFO] fetching crate libimagannotation 0.3.0...
[INFO] checking libimagannotation-0.3.0 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate libimagannotation 0.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate libimagannotation 0.3.0 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libimagannotation 0.3.0
[INFO] finished tweaking crates.io crate libimagannotation 0.3.0
[INFO] tweaked toml for crates.io crate libimagannotation 0.3.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uuid v0.3.1
[INFO] [stderr]   Downloaded libimagentrylink v0.3.0
[INFO] [stderr]   Downloaded libimagentryedit v0.3.0
[INFO] [stderr]   Downloaded libimagrt v0.3.0
[INFO] [stderr]   Downloaded libimagnotes v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 89aeefd633944c16ca84ab7458cbae69a809d8bccbd32f275835bb3e13cb5a8b
[INFO] running `Command { std: "docker" "start" "-a" "89aeefd633944c16ca84ab7458cbae69a809d8bccbd32f275835bb3e13cb5a8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89aeefd633944c16ca84ab7458cbae69a809d8bccbd32f275835bb3e13cb5a8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89aeefd633944c16ca84ab7458cbae69a809d8bccbd32f275835bb3e13cb5a8b", kill_on_drop: false }`
[INFO] [stdout] 89aeefd633944c16ca84ab7458cbae69a809d8bccbd32f275835bb3e13cb5a8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 836936c3c3d0b2f3ea8e39baec62ef469f57de240b0c3b5909c72e076240ee03
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "836936c3c3d0b2f3ea8e39baec62ef469f57de240b0c3b5909c72e076240ee03", kill_on_drop: false }`
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking uuid v0.3.1
[INFO] [stderr]     Checking libimagutil v0.3.0
[INFO] [stderr]     Checking semver-parser v0.6.2
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking semver v0.5.1
[INFO] [stderr]     Checking libimagstore v0.3.0
[INFO] [stderr]     Checking libimagrt v0.3.0
[INFO] [stderr]     Checking libimagentrytag v0.3.0
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libimagrt-0.3.0/src/configuration.rs:256:10
[INFO] [stdout]     |
[INFO] [stdout] 256 |         .flatten()
[INFO] [stdout]     |          ^^^^^^^ multiple `flatten` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `std::slice::Iter<'a, T>`
[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] 246 |     Iterator::flatten(vec![
[INFO] [stdout] 247 |         vec![rtp.clone()],
[INFO] [stdout] 248 |         gen_vars(rtp.clone(), variants.clone(), &modifier),
[INFO] [stdout] 249 | 
[INFO] [stdout] 250 |         env::var("HOME").map(|home| gen_vars(PathBuf::from(home), variants.clone(), &modifier))
[INFO] [stdout] 251 |                         .unwrap_or(vec![]),
[INFO] [stdout]   ...
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 246 |     Itertools::flatten(vec![
[INFO] [stdout] 247 |         vec![rtp.clone()],
[INFO] [stdout] 248 |         gen_vars(rtp.clone(), variants.clone(), &modifier),
[INFO] [stdout] 249 | 
[INFO] [stdout] 250 |         env::var("HOME").map(|home| gen_vars(PathBuf::from(home), variants.clone(), &modifier))
[INFO] [stdout] 251 |                         .unwrap_or(vec![]),
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libimagrt`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "836936c3c3d0b2f3ea8e39baec62ef469f57de240b0c3b5909c72e076240ee03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "836936c3c3d0b2f3ea8e39baec62ef469f57de240b0c3b5909c72e076240ee03", kill_on_drop: false }`
[INFO] [stdout] 836936c3c3d0b2f3ea8e39baec62ef469f57de240b0c3b5909c72e076240ee03