[INFO] cloning repository https://github.com/mutunga-timo/e-learning-system-canister
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mutunga-timo/e-learning-system-canister" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmutunga-timo%2Fe-learning-system-canister", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmutunga-timo%2Fe-learning-system-canister'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12906d96cdf40e82e04e0806b0e40d16fd0066f5
[INFO] checking mutunga-timo/e-learning-system-canister against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmutunga-timo%2Fe-learning-system-canister" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/mutunga-timo/e-learning-system-canister 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/mutunga-timo/e-learning-system-canister
[INFO] finished tweaking git repo https://github.com/mutunga-timo/e-learning-system-canister
[INFO] tweaked toml for git repo https://github.com/mutunga-timo/e-learning-system-canister written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mutunga-timo/e-learning-system-canister 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] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0dde4919b12ab77ca513d970b3b7015d5870ae37d08c7c6890ffa57718503b7c
[INFO] running `Command { std: "docker" "start" "-a" "0dde4919b12ab77ca513d970b3b7015d5870ae37d08c7c6890ffa57718503b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0dde4919b12ab77ca513d970b3b7015d5870ae37d08c7c6890ffa57718503b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dde4919b12ab77ca513d970b3b7015d5870ae37d08c7c6890ffa57718503b7c", kill_on_drop: false }`
[INFO] [stdout] 0dde4919b12ab77ca513d970b3b7015d5870ae37d08c7c6890ffa57718503b7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] dcd13b0a976e7a53c0bc2046e03da89b39730b31a1fa733e8bef324b17d638a6
[INFO] running `Command { std: "docker" "start" "-a" "dcd13b0a976e7a53c0bc2046e03da89b39730b31a1fa733e8bef324b17d638a6", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling hashbrown v0.14.1
[INFO] [stderr]    Compiling winnow v0.5.16
[INFO] [stderr]    Compiling toml_datetime v0.6.3
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling candid v0.9.11
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling termcolor v1.3.0
[INFO] [stderr]    Compiling typed-arena v2.0.2
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling cpufeatures v0.2.9
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling indexmap v2.0.2
[INFO] [stderr]    Compiling pretty v0.12.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout]      | |                          -------- temporary value created here
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout]      | |                               ------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] 1683 | |             Doc::Fail => &Doc::Fail,
[INFO] [stdout]      | |                           --------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1686 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::BorrowedText(" ")))
[INFO] [stdout]      | |                  --------------------------------------------------------------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1686 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::BorrowedText(" ")))
[INFO] [stdout]      | |                                                               ---------------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1686 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::BorrowedText(" ")))
[INFO] [stdout]      | |                                       ------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1690 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::Nil))
[INFO] [stdout]      | |                  ------------------------------------------------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1690 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::Nil))
[INFO] [stdout]      | |                                                               -------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1690 | |                 &Doc::FlatAlt(RefDoc(&Doc::Hardline), RefDoc(&Doc::Nil))
[INFO] [stdout]      | |                                       ------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /          RefDoc(match doc {
[INFO] [stdout] 1680 | |              // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |              Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |              Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1696 | |              ))) => &Doc::Group(RefDoc(&Doc::FlatAlt(
[INFO] [stdout]      | | _____________________-
[INFO] [stdout] 1697 | ||                 RefDoc(&Doc::Hardline),
[INFO] [stdout] 1698 | ||                 RefDoc(&Doc::BorrowedText(" ")),
[INFO] [stdout] 1699 | ||             ))),
[INFO] [stdout]      | ||_______________- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |              _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |          })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /          RefDoc(match doc {
[INFO] [stdout] 1680 | |              // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |              Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |              Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1696 | |              ))) => &Doc::Group(RefDoc(&Doc::FlatAlt(
[INFO] [stdout]      | | ________________________________________-
[INFO] [stdout] 1697 | ||                 RefDoc(&Doc::Hardline),
[INFO] [stdout] 1698 | ||                 RefDoc(&Doc::BorrowedText(" ")),
[INFO] [stdout] 1699 | ||             ))),
[INFO] [stdout]      | ||_____________- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |              _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |          })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1698 | |                 RefDoc(&Doc::BorrowedText(" ")),
[INFO] [stdout]      | |                         ---------------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1697 | |                 RefDoc(&Doc::Hardline),
[INFO] [stdout]      | |                         ------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /          RefDoc(match doc {
[INFO] [stdout] 1680 | |              // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |              Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |              Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1702 | |                  &Doc::Group(RefDoc(&Doc::FlatAlt(
[INFO] [stdout]      | | __________________-
[INFO] [stdout] 1703 | ||                     RefDoc(&Doc::Hardline),
[INFO] [stdout] 1704 | ||                     RefDoc(&Doc::Nil),
[INFO] [stdout] 1705 | ||                 )))
[INFO] [stdout]      | ||___________________- temporary value created here
[INFO] [stdout] 1706 | |              }
[INFO] [stdout] 1707 | |              _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |          })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /          RefDoc(match doc {
[INFO] [stdout] 1680 | |              // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |              Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |              Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1702 | |                  &Doc::Group(RefDoc(&Doc::FlatAlt(
[INFO] [stdout]      | | _____________________________________-
[INFO] [stdout] 1703 | ||                     RefDoc(&Doc::Hardline),
[INFO] [stdout] 1704 | ||                     RefDoc(&Doc::Nil),
[INFO] [stdout] 1705 | ||                 )))
[INFO] [stdout]      | ||_________________- temporary value created here
[INFO] [stdout] 1706 | |              }
[INFO] [stdout] 1707 | |              _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |          })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1704 | |                     RefDoc(&Doc::Nil),
[INFO] [stdout]      | |                             -------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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-0.12.3/src/lib.rs:1679:9
[INFO] [stdout]      |
[INFO] [stdout] 1679 | /         RefDoc(match doc {
[INFO] [stdout] 1680 | |             // Return 'static references for common variants to avoid some allocations
[INFO] [stdout] 1681 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 1682 | |             Doc::Hardline => &Doc::Hardline,
[INFO] [stdout] ...    |
[INFO] [stdout] 1703 | |                     RefDoc(&Doc::Hardline),
[INFO] [stdout]      | |                             ------------- temporary value created here
[INFO] [stdout] ...    |
[INFO] [stdout] 1707 | |             _ => self.docs.alloc(doc),
[INFO] [stdout] 1708 | |         })
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "dcd13b0a976e7a53c0bc2046e03da89b39730b31a1fa733e8bef324b17d638a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcd13b0a976e7a53c0bc2046e03da89b39730b31a1fa733e8bef324b17d638a6", kill_on_drop: false }`
[INFO] [stdout] dcd13b0a976e7a53c0bc2046e03da89b39730b31a1fa733e8bef324b17d638a6