[INFO] cloning repository https://github.com/lily-mara/nu-dock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lily-mara/nu-dock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flily-mara%2Fnu-dock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flily-mara%2Fnu-dock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f5a385458b96611dae1e2606b786cd31f989880a
[INFO] checking lily-mara/nu-dock against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flily-mara%2Fnu-dock" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lily-mara/nu-dock 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/lily-mara/nu-dock
[INFO] finished tweaking git repo https://github.com/lily-mara/nu-dock
[INFO] tweaked toml for git repo https://github.com/lily-mara/nu-dock written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/lily-mara/nu-dock 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]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking lily-mara/nu-dock against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flily-mara%2Fnu-dock" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lily-mara/nu-dock 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/lily-mara/nu-dock
[INFO] finished tweaking git repo https://github.com/lily-mara/nu-dock
[INFO] tweaked toml for git repo https://github.com/lily-mara/nu-dock written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/lily-mara/nu-dock 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getset v0.1.1
[INFO] [stderr]   Downloaded pretty v0.5.2
[INFO] [stderr]   Downloaded typed-arena v1.7.0
[INFO] [stderr]   Downloaded utf8-width v0.1.5
[INFO] [stderr]   Downloaded hyperlocal v0.8.0
[INFO] [stderr]   Downloaded byte-unit v4.0.12
[INFO] [stderr]   Downloaded bigdecimal v0.2.0
[INFO] [stderr]   Downloaded hamcrest2 v0.3.0
[INFO] [stderr]   Downloaded darling v0.13.0
[INFO] [stderr]   Downloaded darling_macro v0.13.0
[INFO] [stderr]   Downloaded socket2 v0.4.1
[INFO] [stderr]   Downloaded serde_with_macros v1.4.2
[INFO] [stderr]   Downloaded darling_core v0.13.0
[INFO] [stderr]   Downloaded serde_with v1.9.4
[INFO] [stderr]   Downloaded hyper v0.14.11
[INFO] [stderr]   Downloaded bollard-stubs v1.41.0
[INFO] [stderr]   Downloaded nu-errors v0.34.0
[INFO] [stderr]   Downloaded nu-source v0.34.0
[INFO] [stderr]   Downloaded nu-value-ext v0.34.0
[INFO] [stderr]   Downloaded nu-protocol v0.34.0
[INFO] [stderr]   Downloaded nu-test-support v0.34.0
[INFO] [stderr]   Downloaded nu-ansi-term v0.34.0
[INFO] [stderr]   Downloaded serde-nu v0.2.0
[INFO] [stderr]   Downloaded bollard v0.11.0
[INFO] [stderr]   Downloaded nu-plugin v0.34.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 5e99780a0d7f2a68cd13f86a2628e30c68f4ff1c9cce23db565509e4ca01cfbf
[INFO] running `Command { std: "docker" "start" "-a" "5e99780a0d7f2a68cd13f86a2628e30c68f4ff1c9cce23db565509e4ca01cfbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e99780a0d7f2a68cd13f86a2628e30c68f4ff1c9cce23db565509e4ca01cfbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e99780a0d7f2a68cd13f86a2628e30c68f4ff1c9cce23db565509e4ca01cfbf", kill_on_drop: false }`
[INFO] [stdout] 5e99780a0d7f2a68cd13f86a2628e30c68f4ff1c9cce23db565509e4ca01cfbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 150e95455626861fe7f5cbf0405b3b93fd6cbd6e7277a4f90aa62e82510a6580
[INFO] running `Command { std: "docker" "start" "-a" "150e95455626861fe7f5cbf0405b3b93fd6cbd6e7277a4f90aa62e82510a6580", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]     Checking ryu v1.0.5
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking pretty v0.5.2
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/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-1949cf8c6b5b557f/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-1949cf8c6b5b557f/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] error: could not compile `pretty` (lib) due to 3 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "150e95455626861fe7f5cbf0405b3b93fd6cbd6e7277a4f90aa62e82510a6580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "150e95455626861fe7f5cbf0405b3b93fd6cbd6e7277a4f90aa62e82510a6580", kill_on_drop: false }`
[INFO] [stdout] 150e95455626861fe7f5cbf0405b3b93fd6cbd6e7277a4f90aa62e82510a6580