[INFO] fetching crate gap_query_interval_tree 0.2.0...
[INFO] testing gap_query_interval_tree-0.2.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate gap_query_interval_tree 0.2.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate gap_query_interval_tree 0.2.0
[INFO] finished tweaking crates.io crate gap_query_interval_tree 0.2.0
[INFO] tweaked toml for crates.io crate gap_query_interval_tree 0.2.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate gap_query_interval_tree 0.2.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to highest compatible versions
[INFO] [stderr]       Adding itertools v0.12.1 (available: v0.15.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded discrete_range_map v0.6.3
[INFO] [stderr]   Downloaded btree_monstrousity v0.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] ed098d7fc21dc0d172234b7ff995528e7f28cac91f1a5e39a9929258df8404cb
[INFO] running `Command { std: "docker" "start" "ed098d7fc21dc0d172234b7ff995528e7f28cac91f1a5e39a9929258df8404cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed098d7fc21dc0d172234b7ff995528e7f28cac91f1a5e39a9929258df8404cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ed098d7fc21dc0d172234b7ff995528e7f28cac91f1a5e39a9929258df8404cb" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed098d7fc21dc0d172234b7ff995528e7f28cac91f1a5e39a9929258df8404cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ed098d7fc21dc0d172234b7ff995528e7f28cac91f1a5e39a9929258df8404cb" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling btree_monstrousity v0.0.4
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/btree_monstrousity-0.0.4/src/polyfill.rs:300:25
[INFO] [stdout]     |
[INFO] [stdout] 300 |             self.iter().is_sorted_by(|a, b| compare(*a, *b))
[INFO] [stdout]     |                         ^^^^^^^^^^^^ multiple `is_sorted_by` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in an impl of the trait `IterIsSorted` for the type `I`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/btree_monstrousity-0.0.4/src/polyfill.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 | /         fn is_sorted_by<F>(mut self, compare: F) -> bool
[INFO] [stdout] 308 | |         where
[INFO] [stdout] 309 | |             F: FnMut(&I::Item, &I::Item) -> Option<Ordering>,
[INFO] [stdout]     | |_____________________________________________________________^
[INFO] [stdout]     = note: candidate #2 is defined in an impl of the trait `Iterator` for the type `core::slice::Iter<'a, T>`
[INFO] [stdout] help: disambiguate the method for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 300 -             self.iter().is_sorted_by(|a, b| compare(*a, *b))
[INFO] [stdout] 300 +             IterIsSorted::is_sorted_by(self.iter(), |a, b| compare(*a, *b))
[INFO] [stdout]     |
[INFO] [stdout] help: disambiguate the method for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 300 -             self.iter().is_sorted_by(|a, b| compare(*a, *b))
[INFO] [stdout] 300 +             Iterator::is_sorted_by(self.iter(), |a, b| compare(*a, *b))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `btree_monstrousity` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ed098d7fc21dc0d172234b7ff995528e7f28cac91f1a5e39a9929258df8404cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed098d7fc21dc0d172234b7ff995528e7f28cac91f1a5e39a9929258df8404cb", kill_on_drop: false }`
[INFO] [stdout] ed098d7fc21dc0d172234b7ff995528e7f28cac91f1a5e39a9929258df8404cb
