[INFO] fetching crate imag-counter 0.4.0...
[INFO] testing imag-counter-0.4.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate imag-counter 0.4.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate imag-counter 0.4.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imag-counter 0.4.0
[INFO] finished tweaking crates.io crate imag-counter 0.4.0
[INFO] tweaked toml for crates.io crate imag-counter 0.4.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ee66361935a89233c54b95395223c2ca1f2d22fa024219d3152714a03f036bd
[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" "9ee66361935a89233c54b95395223c2ca1f2d22fa024219d3152714a03f036bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ee66361935a89233c54b95395223c2ca1f2d22fa024219d3152714a03f036bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ee66361935a89233c54b95395223c2ca1f2d22fa024219d3152714a03f036bd", kill_on_drop: false }`
[INFO] [stdout] 9ee66361935a89233c54b95395223c2ca1f2d22fa024219d3152714a03f036bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", 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] 39a6f837c403b75a0cd085c8fe9d3d867b4ccb8c73c3f7e52b7c4ca9a3a7e5b2
[INFO] running `Command { std: "docker" "start" "-a" "39a6f837c403b75a0cd085c8fe9d3d867b4ccb8c73c3f7e52b7c4ca9a3a7e5b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling version v2.0.1
[INFO] [stderr]    Compiling pest v0.3.3
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling itertools v0.6.5
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling libimagutil v0.4.0
[INFO] [stderr]    Compiling libimagerror v0.4.0
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling handlebars v0.29.1
[INFO] [stderr]    Compiling libimagstore v0.4.0
[INFO] [stderr]    Compiling toml-query v0.3.1
[INFO] [stderr]    Compiling libimagcounter v0.4.0
[INFO] [stderr]    Compiling libimagrt v0.4.0
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libimagrt-0.4.0/src/configuration.rs:270:10
[INFO] [stdout]     |
[INFO] [stdout] 270 |         .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] 260 |     Iterator::flatten(vec![
[INFO] [stdout] 261 |         vec![searchpath.clone()],
[INFO] [stdout] 262 |         gen_vars(searchpath.clone(), variants.clone(), &modifier),
[INFO] [stdout] 263 | 
[INFO] [stdout] 264 |         env::var("HOME").map(|home| gen_vars(PathBuf::from(home), variants.clone(), &modifier))
[INFO] [stdout] 265 |                         .unwrap_or(vec![]),
[INFO] [stdout]   ...
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 260 |     Itertools::flatten(vec![
[INFO] [stdout] 261 |         vec![searchpath.clone()],
[INFO] [stdout] 262 |         gen_vars(searchpath.clone(), variants.clone(), &modifier),
[INFO] [stdout] 263 | 
[INFO] [stdout] 264 |         env::var("HOME").map(|home| gen_vars(PathBuf::from(home), variants.clone(), &modifier))
[INFO] [stdout] 265 |                         .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] running `Command { std: "docker" "inspect" "39a6f837c403b75a0cd085c8fe9d3d867b4ccb8c73c3f7e52b7c4ca9a3a7e5b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39a6f837c403b75a0cd085c8fe9d3d867b4ccb8c73c3f7e52b7c4ca9a3a7e5b2", kill_on_drop: false }`
[INFO] [stdout] 39a6f837c403b75a0cd085c8fe9d3d867b4ccb8c73c3f7e52b7c4ca9a3a7e5b2
