[INFO] fetching crate nu-serde 0.44.0...
[INFO] checking nu-serde-0.44.0 against master#94b72d6bebbddb5d17860914c4544f37365e988c for pr-122789
[INFO] extracting crate nu-serde 0.44.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate nu-serde 0.44.0 on toolchain 94b72d6bebbddb5d17860914c4544f37365e988c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94b72d6bebbddb5d17860914c4544f37365e988c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nu-serde 0.44.0
[INFO] finished tweaking crates.io crate nu-serde 0.44.0
[INFO] tweaked toml for crates.io crate nu-serde 0.44.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94b72d6bebbddb5d17860914c4544f37365e988c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94b72d6bebbddb5d17860914c4544f37365e988c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nu-source v0.44.0
[INFO] [stderr]   Downloaded serde_yaml v0.8.26
[INFO] [stderr]   Downloaded nu-ansi-term v0.44.0
[INFO] [stderr]   Downloaded byte-unit v4.0.19
[INFO] [stderr]   Downloaded chrono-humanize v0.2.3
[INFO] [stderr]   Downloaded nu-errors v0.44.0
[INFO] [stderr]   Downloaded nu-protocol v0.44.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+94b72d6bebbddb5d17860914c4544f37365e988c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4890c7e604890e3444867cec485d294f70f0846c35565c9d04cde8e966aa2cf
[INFO] running `Command { std: "docker" "start" "-a" "b4890c7e604890e3444867cec485d294f70f0846c35565c9d04cde8e966aa2cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4890c7e604890e3444867cec485d294f70f0846c35565c9d04cde8e966aa2cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4890c7e604890e3444867cec485d294f70f0846c35565c9d04cde8e966aa2cf", kill_on_drop: false }`
[INFO] [stdout] b4890c7e604890e3444867cec485d294f70f0846c35565c9d04cde8e966aa2cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+94b72d6bebbddb5d17860914c4544f37365e988c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a9df12148b7ec3c69ac45df0087850779050478a3588c3fb50b53e316ab81d8
[INFO] running `Command { std: "docker" "start" "-a" "8a9df12148b7ec3c69ac45df0087850779050478a3588c3fb50b53e316ab81d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking pretty v0.5.2
[INFO] [stderr]     Checking utf8-width v0.1.7
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking nu-ansi-term v0.44.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking similar v2.5.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.55
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking insta v1.38.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling derive-new v0.5.9
[INFO] [stderr]    Compiling getset v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking nu-source v0.44.0
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]     Checking byte-unit v4.0.19
[INFO] [stderr]     Checking serde_bytes v0.11.14
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking chrono-humanize v0.2.3
[INFO] [stderr]     Checking bigdecimal v0.3.1
[INFO] [stderr]     Checking nu-errors v0.44.0
[INFO] [stderr]     Checking nu-protocol v0.44.0
[INFO] [stderr]     Checking nu-serde v0.44.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.94s
[INFO] running `Command { std: "docker" "inspect" "8a9df12148b7ec3c69ac45df0087850779050478a3588c3fb50b53e316ab81d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a9df12148b7ec3c69ac45df0087850779050478a3588c3fb50b53e316ab81d8", kill_on_drop: false }`
[INFO] [stdout] 8a9df12148b7ec3c69ac45df0087850779050478a3588c3fb50b53e316ab81d8
[INFO] checking nu-serde-0.44.0 against try#cb4bf0ee9ea9dac86332c9e48c07269c7edc21dc for pr-122789
[INFO] extracting crate nu-serde 0.44.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate nu-serde 0.44.0 on toolchain cb4bf0ee9ea9dac86332c9e48c07269c7edc21dc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cb4bf0ee9ea9dac86332c9e48c07269c7edc21dc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nu-serde 0.44.0
[INFO] finished tweaking crates.io crate nu-serde 0.44.0
[INFO] tweaked toml for crates.io crate nu-serde 0.44.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cb4bf0ee9ea9dac86332c9e48c07269c7edc21dc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cb4bf0ee9ea9dac86332c9e48c07269c7edc21dc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+cb4bf0ee9ea9dac86332c9e48c07269c7edc21dc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 668aa13a758c4386b06830d1dae5700c479c83e766850b8bea40266571b6da44
[INFO] running `Command { std: "docker" "start" "-a" "668aa13a758c4386b06830d1dae5700c479c83e766850b8bea40266571b6da44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "668aa13a758c4386b06830d1dae5700c479c83e766850b8bea40266571b6da44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "668aa13a758c4386b06830d1dae5700c479c83e766850b8bea40266571b6da44", kill_on_drop: false }`
[INFO] [stdout] 668aa13a758c4386b06830d1dae5700c479c83e766850b8bea40266571b6da44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+cb4bf0ee9ea9dac86332c9e48c07269c7edc21dc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86bc918a5edb162d22974399771e17ecbfe09e2bdabbb10ccc847686b716f81e
[INFO] running `Command { std: "docker" "start" "-a" "86bc918a5edb162d22974399771e17ecbfe09e2bdabbb10ccc847686b716f81e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking pretty v0.5.2
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking nu-ansi-term v0.44.0
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking utf8-width v0.1.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/pretty-0.5.2/src/lib.rs:590:9
[INFO] [stdout]     |
[INFO] [stdout] 590 | /         RefDoc(match doc {
[INFO] [stdout] 591 | |             // Return 'static references for unit variants to save a small
[INFO] [stdout] 592 | |             // amount of space in the arena
[INFO] [stdout] 593 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout]     | |                          -------- temporary value created here
[INFO] [stdout] ...   |
[INFO] [stdout] 596 | |             _ => Arena::alloc(self, doc),
[INFO] [stdout] 597 | |         })
[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-6f17d22bba15001f/pretty-0.5.2/src/lib.rs:590:9
[INFO] [stdout]     |
[INFO] [stdout] 590 | /         RefDoc(match doc {
[INFO] [stdout] 591 | |             // Return 'static references for unit variants to save a small
[INFO] [stdout] 592 | |             // amount of space in the arena
[INFO] [stdout] 593 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 594 | |             Doc::Space => &Doc::Space,
[INFO] [stdout]     | |                            ---------- temporary value created here
[INFO] [stdout] 595 | |             Doc::Newline => &Doc::Newline,
[INFO] [stdout] 596 | |             _ => Arena::alloc(self, doc),
[INFO] [stdout] 597 | |         })
[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-6f17d22bba15001f/pretty-0.5.2/src/lib.rs:590:9
[INFO] [stdout]     |
[INFO] [stdout] 590 | /         RefDoc(match doc {
[INFO] [stdout] 591 | |             // Return 'static references for unit variants to save a small
[INFO] [stdout] 592 | |             // amount of space in the arena
[INFO] [stdout] 593 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 594 | |             Doc::Space => &Doc::Space,
[INFO] [stdout] 595 | |             Doc::Newline => &Doc::Newline,
[INFO] [stdout]     | |                              ------------ temporary value created here
[INFO] [stdout] 596 | |             _ => Arena::alloc(self, doc),
[INFO] [stdout] 597 | |         })
[INFO] [stdout]     | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stderr]     Checking similar v2.5.0
[INFO] [stderr] error: could not compile `pretty` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "86bc918a5edb162d22974399771e17ecbfe09e2bdabbb10ccc847686b716f81e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86bc918a5edb162d22974399771e17ecbfe09e2bdabbb10ccc847686b716f81e", kill_on_drop: false }`
[INFO] [stdout] 86bc918a5edb162d22974399771e17ecbfe09e2bdabbb10ccc847686b716f81e