[INFO] fetching crate prefix-map 0.3.1...
[INFO] checking prefix-map-0.3.1 against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] extracting crate prefix-map 0.3.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate prefix-map 0.3.1 on toolchain da897dfb6daa268a965d2d73620316ba56020a19
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prefix-map 0.3.1
[INFO] finished tweaking crates.io crate prefix-map 0.3.1
[INFO] tweaked toml for crates.io crate prefix-map 0.3.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "fetch" "--locked" "--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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14706ed066e1a919ede0cddb050cf58b3dc7075c0837cc985b789235d5149abf
[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" "14706ed066e1a919ede0cddb050cf58b3dc7075c0837cc985b789235d5149abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14706ed066e1a919ede0cddb050cf58b3dc7075c0837cc985b789235d5149abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14706ed066e1a919ede0cddb050cf58b3dc7075c0837cc985b789235d5149abf", kill_on_drop: false }`
[INFO] [stdout] 14706ed066e1a919ede0cddb050cf58b3dc7075c0837cc985b789235d5149abf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d502948d77fd1b3e4c317b9654832d99a653a55519689c705c0899a83aa6eb6e
[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" "d502948d77fd1b3e4c317b9654832d99a653a55519689c705c0899a83aa6eb6e", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-segmentation v0.1.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking prefix-map v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `<Self as std::borrow::ToOwned>::Owned: prefix::OwnedPrefix` is not satisfied
[INFO] [stdout]   --> src/prefix.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait ToPrefix: ToOwned {
[INFO] [stdout]    | --------------------------- required by `prefix::ToPrefix`
[INFO] [stdout] ...
[INFO] [stdout] 14 |     type OwnedPrefix: OwnedPrefix<Item=Self::OwnedItem> + Borrow<Self> =
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `prefix::OwnedPrefix` is not implemented for `<Self as std::borrow::ToOwned>::Owned`
[INFO] [stdout]    |
[INFO] [stdout] help: consider further restricting the associated type
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait ToPrefix: ToOwned where <Self as std::borrow::ToOwned>::Owned: prefix::OwnedPrefix {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prefix-map`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[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" "d502948d77fd1b3e4c317b9654832d99a653a55519689c705c0899a83aa6eb6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d502948d77fd1b3e4c317b9654832d99a653a55519689c705c0899a83aa6eb6e", kill_on_drop: false }`
[INFO] [stdout] d502948d77fd1b3e4c317b9654832d99a653a55519689c705c0899a83aa6eb6e