[INFO] crate prefix-map 0.3.1 is already in cache
[INFO] checking prefix-map-0.3.1 against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] extracting crate prefix-map 0.3.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate prefix-map 0.3.1 on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "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" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 202351701cae3f5b3def9586307268034eb38048d08051b22d7033e93f63c7b5
[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" "202351701cae3f5b3def9586307268034eb38048d08051b22d7033e93f63c7b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "202351701cae3f5b3def9586307268034eb38048d08051b22d7033e93f63c7b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "202351701cae3f5b3def9586307268034eb38048d08051b22d7033e93f63c7b5", kill_on_drop: false }`
[INFO] [stdout] 202351701cae3f5b3def9586307268034eb38048d08051b22d7033e93f63c7b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00df7b049c2e55df4a6e96d4de4d27c2d562f37b37006ac697cfc3de8e348af8
[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" "00df7b049c2e55df4a6e96d4de4d27c2d562f37b37006ac697cfc3de8e348af8", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-segmentation v0.1.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking prefix-map v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `rand`
[INFO] [stdout]    --> src/lib.rs:712:9
[INFO] [stdout]     |
[INFO] [stdout] 712 |     use rand::{thread_rng, Rng};
[INFO] [stdout]     |         ^^^^ help: a similar path exists: `self::rand`
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prefix-map`.
[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[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] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "00df7b049c2e55df4a6e96d4de4d27c2d562f37b37006ac697cfc3de8e348af8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00df7b049c2e55df4a6e96d4de4d27c2d562f37b37006ac697cfc3de8e348af8", kill_on_drop: false }`
[INFO] [stdout] 00df7b049c2e55df4a6e96d4de4d27c2d562f37b37006ac697cfc3de8e348af8