[INFO] cloning repository https://github.com/dmeijboom/pkg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dmeijboom/pkg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmeijboom%2Fpkg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmeijboom%2Fpkg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ebc8c453e7fbf61a76da0603b00789f2101e4bb0
[INFO] checking dmeijboom/pkg against master#94b72d6bebbddb5d17860914c4544f37365e988c for pr-122789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmeijboom%2Fpkg" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dmeijboom/pkg 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 git repo https://github.com/dmeijboom/pkg
[INFO] finished tweaking git repo https://github.com/dmeijboom/pkg
[INFO] tweaked toml for git repo https://github.com/dmeijboom/pkg written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dmeijboom/pkg 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" "+94b72d6bebbddb5d17860914c4544f37365e988c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-tar v0.3.0
[INFO] [stderr]   Downloaded annotate-snippets v0.9.1
[INFO] [stderr]   Downloaded abnf_to_pest v0.5.0
[INFO] [stderr]   Downloaded pest_consume_macros v1.1.0
[INFO] [stderr]   Downloaded pest_consume v1.1.1
[INFO] [stderr]   Downloaded bincode_derive v2.0.0-rc.1
[INFO] [stderr]   Downloaded elsa v1.7.0
[INFO] [stderr]   Downloaded serde_dhall v0.11.0
[INFO] [stderr]   Downloaded dhall_proc_macros v0.6.0
[INFO] [stderr]   Downloaded dhall v0.11.0
[INFO] [stderr]   Downloaded async-compression v0.3.13
[INFO] [stderr]   Downloaded virtue v0.0.7
[INFO] [stderr]   Downloaded bincode v2.0.0-rc.1
[INFO] [stderr]   Downloaded clap_complete v3.1.4
[INFO] [stderr]   Downloaded abnf v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 57b81764f992fb8652977472a816ee0d50d6588adace6600dd232916b38e7518
[INFO] running `Command { std: "docker" "start" "-a" "57b81764f992fb8652977472a816ee0d50d6588adace6600dd232916b38e7518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57b81764f992fb8652977472a816ee0d50d6588adace6600dd232916b38e7518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57b81764f992fb8652977472a816ee0d50d6588adace6600dd232916b38e7518", kill_on_drop: false }`
[INFO] [stdout] 57b81764f992fb8652977472a816ee0d50d6588adace6600dd232916b38e7518
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d307770abbb892bf2c3f14f53ffc9665be087c1a5a8b9f7db15630f312bf09d5
[INFO] running `Command { std: "docker" "start" "-a" "d307770abbb892bf2c3f14f53ffc9665be087c1a5a8b9f7db15630f312bf09d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.16
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[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling futures-core v0.3.21
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[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling lexical-core v0.7.6
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[INFO] [stderr]    Compiling ucd-trie v0.1.3
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[INFO] [stderr]    Compiling serde_derive v1.0.137
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[INFO] [stderr]    Compiling nom v5.1.2
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[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking unicode-normalization v0.1.19
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[INFO] [stderr]    Compiling doc-comment v0.3.3
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[INFO] [stderr]     Checking annotate-snippets v0.9.1
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[INFO] [stderr]     Checking crypto-common v0.1.3
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[INFO] [stderr]     Checking textwrap v0.15.0
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[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling libz-sys v1.1.6
[INFO] [stderr]    Compiling libssh2-sys v0.2.23
[INFO] [stderr]    Compiling lzma-sys v0.1.17
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]    Compiling libgit2-sys v0.13.2+1.4.2
[INFO] [stderr]     Checking home v0.5.3
[INFO] [stderr]    Compiling virtue v0.0.7
[INFO] [stderr]     Checking flate2 v1.0.23
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking digest v0.10.3
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[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]    Compiling bincode_derive v2.0.0-rc.1
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking indicatif v0.17.0-rc.10
[INFO] [stderr]    Compiling abnf v0.6.1
[INFO] [stderr]    Compiling abnf_to_pest v0.5.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling dhall v0.11.0
[INFO] [stderr]    Compiling pest_consume_macros v1.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]    Compiling dhall_proc_macros v0.6.0
[INFO] [stderr]     Checking tokio v1.18.2
[INFO] [stderr]     Checking pest_consume v1.1.1
[INFO] [stderr]     Checking tracing v0.1.33
[INFO] [stderr]     Checking git2 v0.14.2
[INFO] [stderr]     Checking clap v3.1.17
[INFO] [stderr]     Checking clap_complete v3.1.4
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking tokio-util v0.7.1
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-stream v0.1.8
[INFO] [stderr]     Checking async-compression v0.3.13
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-tar v0.3.0
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking bincode v2.0.0-rc.1
[INFO] [stderr]     Checking hyper v0.14.18
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.10
[INFO] [stderr]     Checking serde_dhall v0.11.0
[INFO] [stderr]     Checking pkg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Script`
[INFO] [stdout]  --> src/pkgscript/mod.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use ast::{Instruction, Script};
[INFO] [stdout]   |                            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Script`
[INFO] [stdout]  --> src/pkgscript/mod.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use ast::{Instruction, Script};
[INFO] [stdout]   |                            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.23s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "d307770abbb892bf2c3f14f53ffc9665be087c1a5a8b9f7db15630f312bf09d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d307770abbb892bf2c3f14f53ffc9665be087c1a5a8b9f7db15630f312bf09d5", kill_on_drop: false }`
[INFO] [stdout] d307770abbb892bf2c3f14f53ffc9665be087c1a5a8b9f7db15630f312bf09d5
[INFO] checking dmeijboom/pkg against try#cb4bf0ee9ea9dac86332c9e48c07269c7edc21dc for pr-122789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmeijboom%2Fpkg" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dmeijboom/pkg 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 git repo https://github.com/dmeijboom/pkg
[INFO] finished tweaking git repo https://github.com/dmeijboom/pkg
[INFO] tweaked toml for git repo https://github.com/dmeijboom/pkg written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/dmeijboom/pkg 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" "+cb4bf0ee9ea9dac86332c9e48c07269c7edc21dc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2e35ea008f353860128659a8b0d2cb43ad376868fdf7c7e8eeae02d53fc0e8f0
[INFO] running `Command { std: "docker" "start" "-a" "2e35ea008f353860128659a8b0d2cb43ad376868fdf7c7e8eeae02d53fc0e8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e35ea008f353860128659a8b0d2cb43ad376868fdf7c7e8eeae02d53fc0e8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e35ea008f353860128659a8b0d2cb43ad376868fdf7c7e8eeae02d53fc0e8f0", kill_on_drop: false }`
[INFO] [stdout] 2e35ea008f353860128659a8b0d2cb43ad376868fdf7c7e8eeae02d53fc0e8f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7f47d1e25db5861ea0de659a6bd3516399b1f54b2da44485e8937d36d1803ca3
[INFO] running `Command { std: "docker" "start" "-a" "7f47d1e25db5861ea0de659a6bd3516399b1f54b2da44485e8937d36d1803ca3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking tracing-core v0.1.24
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]    Compiling httparse v1.7.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling typed-arena v1.7.0
[INFO] [stderr]    Compiling pretty v0.5.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling itertools v0.9.0
[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] [stderr]     Checking tower-service v0.3.1
[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 httpdate v1.0.2
[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" "7f47d1e25db5861ea0de659a6bd3516399b1f54b2da44485e8937d36d1803ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f47d1e25db5861ea0de659a6bd3516399b1f54b2da44485e8937d36d1803ca3", kill_on_drop: false }`
[INFO] [stdout] 7f47d1e25db5861ea0de659a6bd3516399b1f54b2da44485e8937d36d1803ca3