[INFO] cloning repository https://github.com/TiTiCannotProgramme/cyclic_structure_gen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TiTiCannotProgramme/cyclic_structure_gen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTiTiCannotProgramme%2Fcyclic_structure_gen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTiTiCannotProgramme%2Fcyclic_structure_gen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 239b7831360868948897e645d4bf232ef5a6ec20
[INFO] checking TiTiCannotProgramme/cyclic_structure_gen against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTiTiCannotProgramme%2Fcyclic_structure_gen" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen on toolchain 901e6d56697c79b2e80df6a487b2318ec6f57ee3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen
[INFO] finished tweaking git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen
[INFO] tweaked toml for git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/TiTiCannotProgramme/cyclic_structure_gen already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80dfbe2b550a812cccbc0dcf7ebb051fba80918c83d23e3d45fd2ee346da66af
[INFO] running `Command { std: "docker" "start" "-a" "80dfbe2b550a812cccbc0dcf7ebb051fba80918c83d23e3d45fd2ee346da66af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80dfbe2b550a812cccbc0dcf7ebb051fba80918c83d23e3d45fd2ee346da66af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80dfbe2b550a812cccbc0dcf7ebb051fba80918c83d23e3d45fd2ee346da66af", kill_on_drop: false }`
[INFO] [stdout] 80dfbe2b550a812cccbc0dcf7ebb051fba80918c83d23e3d45fd2ee346da66af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8c4e6fb7f350455101af411afc2a35b12d8eb185ac713cc4d0dea7adf34d4fc
[INFO] running `Command { std: "docker" "start" "-a" "e8c4e6fb7f350455101af411afc2a35b12d8eb185ac713cc4d0dea7adf34d4fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking typed-arena v2.0.2
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking pretty v0.11.3
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout]      | |                          -------- temporary value created here
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout]      | |                               ------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] 1660 | |             Doc::Fail => &Doc::Fail,
[INFO] [stdout]      | |                           --------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1663 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::BorrowedText(" ")))
[INFO] [stdout]      | |                  --------------------------------------------------------------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1663 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::BorrowedText(" ")))
[INFO] [stdout]      | |                                                               ---------------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1663 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::BorrowedText(" ")))
[INFO] [stdout]      | |                                       ------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1667 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::Nil))
[INFO] [stdout]      | |                  ------------------------------------------------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1667 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::Nil))
[INFO] [stdout]      | |                                                               -------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1667 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::Nil))
[INFO] [stdout]      | |                                       ------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /          RefDoc(match doc {
[INFO] [stdout] 1657 | |              // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |              Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |              Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1673 | |              ))) => &Doc::Group(RefDoc(&Doc::FlatAlt(
[INFO] [stdout]      | | _____________________-
[INFO] [stdout] 1674 | ||                 RefDoc(&Doc::Hardline),
[INFO] [stdout] 1675 | ||                 RefDoc(&Doc::BorrowedText(" ")),
[INFO] [stdout] 1676 | ||             ))),
[INFO] [stdout]      | ||_______________- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |              _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |          })
[INFO] [stdout]      | |___________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /          RefDoc(match doc {
[INFO] [stdout] 1657 | |              // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |              Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |              Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1673 | |              ))) => &Doc::Group(RefDoc(&Doc::FlatAlt(
[INFO] [stdout]      | | ________________________________________-
[INFO] [stdout] 1674 | ||                 RefDoc(&Doc::Hardline),
[INFO] [stdout] 1675 | ||                 RefDoc(&Doc::BorrowedText(" ")),
[INFO] [stdout] 1676 | ||             ))),
[INFO] [stdout]      | ||_____________- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |              _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |          })
[INFO] [stdout]      | |___________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1675 | |                 RefDoc(&Doc::BorrowedText(" ")),
[INFO] [stdout]      | |                         ---------------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1674 | |                 RefDoc(&Doc::Hardline),
[INFO] [stdout]      | |                         ------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /          RefDoc(match doc {
[INFO] [stdout] 1657 | |              // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |              Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |              Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1679 | |                  &Doc::Group(RefDoc(&Doc::FlatAlt(
[INFO] [stdout]      | | __________________-
[INFO] [stdout] 1680 | ||                     RefDoc(&Doc::Hardline),
[INFO] [stdout] 1681 | ||                     RefDoc(&Doc::Nil),
[INFO] [stdout] 1682 | ||                 )))
[INFO] [stdout]      | ||___________________- temporary value created here
[INFO] [stdout] 1683 | |              }
[INFO] [stdout] 1684 | |              _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |          })
[INFO] [stdout]      | |___________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /          RefDoc(match doc {
[INFO] [stdout] 1657 | |              // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |              Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |              Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1679 | |                  &Doc::Group(RefDoc(&Doc::FlatAlt(
[INFO] [stdout]      | | _____________________________________-
[INFO] [stdout] 1680 | ||                     RefDoc(&Doc::Hardline),
[INFO] [stdout] 1681 | ||                     RefDoc(&Doc::Nil),
[INFO] [stdout] 1682 | ||                 )))
[INFO] [stdout]      | ||_________________- temporary value created here
[INFO] [stdout] 1683 | |              }
[INFO] [stdout] 1684 | |              _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |          })
[INFO] [stdout]      | |___________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1681 | |                     RefDoc(&Doc::Nil),
[INFO] [stdout]      | |                             -------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.11.3/src/lib.rs:1656:9
[INFO] [stdout]      |
[INFO] [stdout] 1656 | /         RefDoc(match doc {
[INFO] [stdout] 1657 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1658 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1659 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1680 | |                     RefDoc(&Doc::Hardline),
[INFO] [stdout]      | |                             ------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1684 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1685 | |         })
[INFO] [stdout]      | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pretty` (lib) due to 17 previous errors
[INFO] running `Command { std: "docker" "inspect" "e8c4e6fb7f350455101af411afc2a35b12d8eb185ac713cc4d0dea7adf34d4fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8c4e6fb7f350455101af411afc2a35b12d8eb185ac713cc4d0dea7adf34d4fc", kill_on_drop: false }`
[INFO] [stdout] e8c4e6fb7f350455101af411afc2a35b12d8eb185ac713cc4d0dea7adf34d4fc