[INFO] fetching crate imag-documentation 0.2.0...
[INFO] checking imag-documentation-0.2.0 against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] extracting crate imag-documentation 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate imag-documentation 0.2.0 on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imag-documentation 0.2.0
[INFO] finished tweaking crates.io crate imag-documentation 0.2.0
[INFO] tweaked toml for crates.io crate imag-documentation 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b7c67720ca95c8050cb46586e2da45200c9ef413a7390bf3cd85ef92dd219a5
[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" "6b7c67720ca95c8050cb46586e2da45200c9ef413a7390bf3cd85ef92dd219a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b7c67720ca95c8050cb46586e2da45200c9ef413a7390bf3cd85ef92dd219a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b7c67720ca95c8050cb46586e2da45200c9ef413a7390bf3cd85ef92dd219a5", kill_on_drop: false }`
[INFO] [stdout] 6b7c67720ca95c8050cb46586e2da45200c9ef413a7390bf3cd85ef92dd219a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33213b3694709dd6731f5629da1c8f2aa08d7881ecd5966183fde9b9a5dda84e
[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" "33213b3694709dd6731f5629da1c8f2aa08d7881ecd5966183fde9b9a5dda84e", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]     Checking ansi_term v0.7.5
[INFO] [stderr]     Checking nom v1.2.4
[INFO] [stderr]     Checking boolinator v2.4.0
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking version v2.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking filters v0.1.1
[INFO] [stderr]     Checking encode_unicode v0.1.3
[INFO] [stderr]     Checking bitflags v0.1.1
[INFO] [stderr]     Checking xdg-basedir v0.2.2
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking bitflags v0.5.0
[INFO] [stderr]     Checking toml v0.2.1
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling hoedown v5.0.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking walkdir v0.1.8
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]     Checking term v0.2.14
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking csv v0.15.0
[INFO] [stderr]     Checking interactor v0.1.1
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking semver v0.2.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking prettytable-rs v0.6.7
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking spinner v0.4.0
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling openssl-sys v0.7.17
[INFO] [stderr]     Checking libimagerror v0.2.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling libssh2-sys v0.1.41
[INFO] [stderr]    Compiling libgit2-sys v0.4.6
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking libimagutil v0.2.0
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking libimagstore v0.2.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking libimagcounter v0.2.0
[INFO] [stderr]     Checking libimagentrymarkdown v0.2.0
[INFO] [stderr]     Checking libimagentrytag v0.2.0
[INFO] [stderr]     Checking libimagentrylist v0.2.0
[INFO] [stderr]     Checking libimagtimeui v0.2.0
[INFO] [stderr]     Checking libimagentrylink v0.2.0
[INFO] [stderr]     Checking libimagref v0.2.0
[INFO] [stderr]     Checking libimagentryfilter v0.2.0
[INFO] [stderr]     Checking libimaginteraction v0.2.0
[INFO] [stderr]     Checking libimagbookmark v0.2.0
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libimagref-0.2.0/src/reference.rs:530:22
[INFO] [stdout]     |
[INFO] [stdout] 530 |                     .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 `Map<I, F>`
[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] 497 |                 Iterator::flatten(search_roots
[INFO] [stdout] 498 |                     .unwrap_or(vec![PathBuf::from("/")])
[INFO] [stdout] 499 |                     .into_iter()
[INFO] [stdout] 500 |                     .map(|root| {
[INFO] [stdout] 501 |                         WalkDir::new(root)
[INFO] [stdout] 502 |                             .follow_links(false)
[INFO] [stdout]   ...
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 497 |                 Itertools::flatten(search_roots
[INFO] [stdout] 498 |                     .unwrap_or(vec![PathBuf::from("/")])
[INFO] [stdout] 499 |                     .into_iter()
[INFO] [stdout] 500 |                     .map(|root| {
[INFO] [stdout] 501 |                         WalkDir::new(root)
[INFO] [stdout] 502 |                             .follow_links(false)
[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 `libimagref`
[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] [stdout] error[E0502]: cannot borrow `*self.store` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libimagbookmark-0.2.0/src/collection.rs:127:52
[INFO] [stdout]     |
[INFO] [stdout] 127 |             .and_then(|url| self.add_external_link(self.store, url).map_err_into(BEK::LinkingError))
[INFO] [stdout]     |                             ---- ----------------- ^^^^^^^^^^ immutable borrow occurs here
[INFO] [stdout]     |                             |    |
[INFO] [stdout]     |                             |    mutable borrow later used by call
[INFO] [stdout]     |                             mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self.store` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libimagbookmark-0.2.0/src/collection.rs:144:43
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 self.remove_external_link(self.store, url).map_err_into(BEK::LinkingError)
[INFO] [stdout]     |                 ---- -------------------- ^^^^^^^^^^ immutable borrow occurs here
[INFO] [stdout]     |                 |    |
[INFO] [stdout]     |                 |    mutable borrow later used by call
[INFO] [stdout]     |                 mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "33213b3694709dd6731f5629da1c8f2aa08d7881ecd5966183fde9b9a5dda84e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33213b3694709dd6731f5629da1c8f2aa08d7881ecd5966183fde9b9a5dda84e", kill_on_drop: false }`
[INFO] [stdout] 33213b3694709dd6731f5629da1c8f2aa08d7881ecd5966183fde9b9a5dda84e