[INFO] cloning repository https://github.com/ifiokjr/package_json_schema
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ifiokjr/package_json_schema" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fifiokjr%2Fpackage_json_schema", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fifiokjr%2Fpackage_json_schema'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 774a8601cb12ce717fc698046be33d6e01bf5e45
[INFO] checking ifiokjr/package_json_schema against master#158f00a1c5175648af6f6099b075f78d1d014a28 for pr-121251
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fifiokjr%2Fpackage_json_schema" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ifiokjr/package_json_schema on toolchain 158f00a1c5175648af6f6099b075f78d1d014a28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/ifiokjr/package_json_schema
[INFO] finished tweaking git repo https://github.com/ifiokjr/package_json_schema
[INFO] tweaked toml for git repo https://github.com/ifiokjr/package_json_schema written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ifiokjr/package_json_schema 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" "+158f00a1c5175648af6f6099b075f78d1d014a28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr] warning: spurious network error (3 tries remaining): failed to get successful HTTP response from `https://crates.io/api/v1/crates/validator_types/0.16.0/download` (99.84.160.119), got 503
[INFO] [stderr] body:
[INFO] [stderr] <!DOCTYPE html>
[INFO] [stderr] 	<html>
[INFO] [stderr] 	  <head>
[INFO] [stderr] 		<meta name="viewport" content="width=device-width, initial-scale=1">
[INFO] [stderr] 		<meta charset="utf-8">
[INFO] [stderr] 		<title>Application Error</title>
[INFO] [stderr] 		<style media="screen">
[INFO] [stderr] 		  html,body,iframe {
[INFO] [stderr] 			margin: 0;
[INFO] [stderr] 			padding: 0;
[INFO] [stderr] 		  }
[INFO] [stderr] 		  html,body {
[INFO] [stderr] 			height: 100%;
[INFO] [stderr] 			overflow: hidden;
[INFO] [stderr] 		  }
[INFO] [stderr] 		  iframe {
[INFO] [stderr] 			width: 100%;
[INFO] [stderr] 			height: 100%;
[INFO] [stderr] 			border: 0;
[INFO] [stderr] 		  }
[INFO] [stderr] 		</style>
[INFO] [stderr] 	  </head>
[INFO] [stderr] 	  <body>
[INFO] [stderr] 		<iframe src="//www.herokucdn.com/error-pages/application-error.html"></iframe>
[INFO] [stderr] 	  </body>
[INFO] [stderr] 	</html>
[INFO] [stderr] warning: spurious network error (2 tries remaining): failed to get successful HTTP response from `https://crates.io/api/v1/crates/validator_types/0.16.0/download` (99.84.160.119), got 503
[INFO] [stderr] body:
[INFO] [stderr] <!DOCTYPE html>
[INFO] [stderr] 	<html>
[INFO] [stderr] 	  <head>
[INFO] [stderr] 		<meta name="viewport" content="width=device-width, initial-scale=1">
[INFO] [stderr] 		<meta charset="utf-8">
[INFO] [stderr] 		<title>Application Error</title>
[INFO] [stderr] 		<style media="screen">
[INFO] [stderr] 		  html,body,iframe {
[INFO] [stderr] 			margin: 0;
[INFO] [stderr] 			padding: 0;
[INFO] [stderr] 		  }
[INFO] [stderr] 		  html,body {
[INFO] [stderr] 			height: 100%;
[INFO] [stderr] 			overflow: hidden;
[INFO] [stderr] 		  }
[INFO] [stderr] 		  iframe {
[INFO] [stderr] 			width: 100%;
[INFO] [stderr] 			height: 100%;
[INFO] [stderr] 			border: 0;
[INFO] [stderr] 		  }
[INFO] [stderr] 		</style>
[INFO] [stderr] 	  </head>
[INFO] [stderr] 	  <body>
[INFO] [stderr] 		<iframe src="//www.herokucdn.com/error-pages/application-error.html"></iframe>
[INFO] [stderr] 	  </body>
[INFO] [stderr] 	</html>
[INFO] [stderr]   Downloaded insta v1.29.0
[INFO] [stderr]   Downloaded validator v0.16.0
[INFO] [stderr] warning: spurious network error (1 tries remaining): failed to get successful HTTP response from `https://crates.io/api/v1/crates/validator_types/0.16.0/download` (99.84.160.119), got 503
[INFO] [stderr] body:
[INFO] [stderr] <!DOCTYPE html>
[INFO] [stderr] 	<html>
[INFO] [stderr] 	  <head>
[INFO] [stderr] 		<meta name="viewport" content="width=device-width, initial-scale=1">
[INFO] [stderr] 		<meta charset="utf-8">
[INFO] [stderr] 		<title>Application Error</title>
[INFO] [stderr] 		<style media="screen">
[INFO] [stderr] 		  html,body,iframe {
[INFO] [stderr] 			margin: 0;
[INFO] [stderr] 			padding: 0;
[INFO] [stderr] 		  }
[INFO] [stderr] 		  html,body {
[INFO] [stderr] 			height: 100%;
[INFO] [stderr] 			overflow: hidden;
[INFO] [stderr] 		  }
[INFO] [stderr] 		  iframe {
[INFO] [stderr] 			width: 100%;
[INFO] [stderr] 			height: 100%;
[INFO] [stderr] 			border: 0;
[INFO] [stderr] 		  }
[INFO] [stderr] 		</style>
[INFO] [stderr] 	  </head>
[INFO] [stderr] 	  <body>
[INFO] [stderr] 		<iframe src="//www.herokucdn.com/error-pages/application-error.html"></iframe>
[INFO] [stderr] 	  </body>
[INFO] [stderr] 	</html>
[INFO] [stderr]   Downloaded similar v2.2.1
[INFO] [stderr]   Downloaded validator_derive v0.16.0
[INFO] [stderr] error: failed to download from `https://crates.io/api/v1/crates/validator_types/0.16.0/download`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to get successful HTTP response from `https://crates.io/api/v1/crates/validator_types/0.16.0/download` (99.84.160.119), got 503
[INFO] [stderr]   debug headers:
[INFO] [stderr]   x-cache: Error from cloudfront
[INFO] [stderr]   x-amz-cf-pop: ORD52-C2
[INFO] [stderr]   x-amz-cf-id: GMWmmf9yqzsGIZQCc8DP3IPwBAzXL5mfAKOabI-msukcXQUtNso-tw==
[INFO] [stderr]   body:
[INFO] [stderr]   <!DOCTYPE html>
[INFO] [stderr]   	<html>
[INFO] [stderr]   	  <head>
[INFO] [stderr]   		<meta name="viewport" content="width=device-width, initial-scale=1">
[INFO] [stderr]   		<meta charset="utf-8">
[INFO] [stderr]   		<title>Application Error</title>
[INFO] [stderr]   		<style media="screen">
[INFO] [stderr]   		  html,body,iframe {
[INFO] [stderr]   			margin: 0;
[INFO] [stderr]   			padding: 0;
[INFO] [stderr]   		  }
[INFO] [stderr]   		  html,body {
[INFO] [stderr]   			height: 100%;
[INFO] [stderr]   			overflow: hidden;
[INFO] [stderr]   		  }
[INFO] [stderr]   		  iframe {
[INFO] [stderr]   			width: 100%;
[INFO] [stderr]   			height: 100%;
[INFO] [stderr]   			border: 0;
[INFO] [stderr]   		  }
[INFO] [stderr]   		</style>
[INFO] [stderr]   	  </head>
[INFO] [stderr]   	  <body>
[INFO] [stderr]   		<iframe src="//www.herokucdn.com/error-pages/application-error.html"></iframe>
[INFO] [stderr]   	  </body>
[INFO] [stderr]   	</html>
[ERROR] this task or one of its parent failed!
[ERROR] command failed: exit status: 101
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking ifiokjr/package_json_schema against try#b4fc5dbf0bc33be331f9d893db5b3a794f29724a+rustflags=-Dexplicit_range -Dtrait_impl_range -Wrange_syntax -Wrange_bounds for pr-121251
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fifiokjr%2Fpackage_json_schema" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ifiokjr/package_json_schema on toolchain b4fc5dbf0bc33be331f9d893db5b3a794f29724a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b4fc5dbf0bc33be331f9d893db5b3a794f29724a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/ifiokjr/package_json_schema
[INFO] finished tweaking git repo https://github.com/ifiokjr/package_json_schema
[INFO] tweaked toml for git repo https://github.com/ifiokjr/package_json_schema written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ifiokjr/package_json_schema 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" "+b4fc5dbf0bc33be331f9d893db5b3a794f29724a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded validator_types v0.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+b4fc5dbf0bc33be331f9d893db5b3a794f29724a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25308ea18578238b1a55a11386e0abbc6c285bc9e083c54f95e6a933e6755598
[INFO] running `Command { std: "docker" "start" "-a" "25308ea18578238b1a55a11386e0abbc6c285bc9e083c54f95e6a933e6755598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25308ea18578238b1a55a11386e0abbc6c285bc9e083c54f95e6a933e6755598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25308ea18578238b1a55a11386e0abbc6c285bc9e083c54f95e6a933e6755598", kill_on_drop: false }`
[INFO] [stdout] 25308ea18578238b1a55a11386e0abbc6c285bc9e083c54f95e6a933e6755598
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dexplicit_range -Dtrait_impl_range -Wrange_syntax -Wrange_bounds" "-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" "+b4fc5dbf0bc33be331f9d893db5b3a794f29724a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28ab9edef73e7b90fa9eb514d6e62d5dcbc1f9a16cfdf7e85ce4d55947f48464
[INFO] running `Command { std: "docker" "start" "-a" "28ab9edef73e7b90fa9eb514d6e62d5dcbc1f9a16cfdf7e85ce4d55947f48464", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking similar v2.2.1
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.59/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "28ab9edef73e7b90fa9eb514d6e62d5dcbc1f9a16cfdf7e85ce4d55947f48464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28ab9edef73e7b90fa9eb514d6e62d5dcbc1f9a16cfdf7e85ce4d55947f48464", kill_on_drop: false }`
[INFO] [stdout] 28ab9edef73e7b90fa9eb514d6e62d5dcbc1f9a16cfdf7e85ce4d55947f48464