[INFO] cloning repository https://github.com/marcins/aoc2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcins/aoc2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcins%2Faoc2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcins%2Faoc2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e401b3dfcd02bdeae6a29456bd4b3df480320551
[INFO] building marcins/aoc2019 against master#eb171a227f9e5de5d376b6edb56b174bc8235fb3 for pr-149937
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcins%2Faoc2019" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/marcins/aoc2019
[INFO] finished tweaking git repo https://github.com/marcins/aoc2019
[INFO] tweaked toml for git repo https://github.com/marcins/aoc2019 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/marcins/aoc2019 on toolchain eb171a227f9e5de5d376b6edb56b174bc8235fb3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/marcins/aoc2019 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" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr] warning: spurious network error (3 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/rustc-serialize/0.3.24/download` (151.101.2.137), got 500
[INFO] [stderr] body:
[INFO] [stderr] Internal Server Error
[INFO] [stderr] warning: spurious network error (3 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/serde_derive/1.0.103/download` (151.101.2.137), got 500
[INFO] [stderr] body:
[INFO] [stderr] Internal Server Error
[INFO] [stderr]   Downloaded aoc-runner-derive v0.2.2
[INFO] [stderr]   Downloaded serde v1.0.103
[INFO] [stderr]   Downloaded aoc-runner-internal v0.1.0
[INFO] [stderr]   Downloaded aoc-runner v0.2.2
[INFO] [stderr] warning: spurious network error (3 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/syn/1.0.11/download` (151.101.2.137), got 500
[INFO] [stderr] body:
[INFO] [stderr] Internal Server Error
[INFO] [stderr]   Downloaded proc-macro2 v1.0.6
[INFO] [stderr] warning: spurious network error (2 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/rustc-serialize/0.3.24/download` (151.101.2.137), got 500
[INFO] [stderr] body:
[INFO] [stderr] Internal Server Error
[INFO] [stderr] warning: spurious network error (2 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/serde_derive/1.0.103/download` (151.101.2.137), got 500
[INFO] [stderr] body:
[INFO] [stderr] Internal Server Error
[INFO] [stderr]   Downloaded serde_json v1.0.44
[INFO] [stderr] warning: spurious network error (2 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/syn/1.0.11/download` (151.101.2.137), got 500
[INFO] [stderr] body:
[INFO] [stderr] Internal Server Error
[INFO] [stderr] warning: spurious network error (1 try remaining): failed to get successful HTTP response from `https://static.crates.io/crates/serde_derive/1.0.103/download` (151.101.2.137), got 500
[INFO] [stderr] body:
[INFO] [stderr] Internal Server Error
[INFO] [stderr] warning: spurious network error (1 try remaining): failed to get successful HTTP response from `https://static.crates.io/crates/rustc-serialize/0.3.24/download` (151.101.2.137), got 500
[INFO] [stderr] body:
[INFO] [stderr] Internal Server Error
[INFO] [stderr] error: failed to download from `https://static.crates.io/crates/serde_derive/1.0.103/download`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to get successful HTTP response from `https://static.crates.io/crates/serde_derive/1.0.103/download` (151.101.2.137), got 500
[INFO] [stderr]   debug headers:
[INFO] [stderr]   x-served-by: cache-chi-kigq8000063-CHI
[INFO] [stderr]   body:
[INFO] [stderr]   Internal Server Error


command failed: exit status: 101

    Updating crates.io index
    Blocking waiting for file lock on package cache
 Downloading crates ...
warning: spurious network error (3 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/rustc-serialize/0.3.24/download` (151.101.2.137), got 500
body:
Internal Server Error
warning: spurious network error (3 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/serde_derive/1.0.103/download` (151.101.2.137), got 500
body:
Internal Server Error
  Downloaded aoc-runner-derive v0.2.2
  Downloaded serde v1.0.103
  Downloaded aoc-runner-internal v0.1.0
  Downloaded aoc-runner v0.2.2
warning: spurious network error (3 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/syn/1.0.11/download` (151.101.2.137), got 500
body:
Internal Server Error
  Downloaded proc-macro2 v1.0.6
warning: spurious network error (2 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/rustc-serialize/0.3.24/download` (151.101.2.137), got 500
body:
Internal Server Error
warning: spurious network error (2 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/serde_derive/1.0.103/download` (151.101.2.137), got 500
body:
Internal Server Error
  Downloaded serde_json v1.0.44
warning: spurious network error (2 tries remaining): failed to get successful HTTP response from `https://static.crates.io/crates/syn/1.0.11/download` (151.101.2.137), got 500
body:
Internal Server Error
warning: spurious network error (1 try remaining): failed to get successful HTTP response from `https://static.crates.io/crates/serde_derive/1.0.103/download` (151.101.2.137), got 500
body:
Internal Server Error
warning: spurious network error (1 try remaining): failed to get successful HTTP response from `https://static.crates.io/crates/rustc-serialize/0.3.24/download` (151.101.2.137), got 500
body:
Internal Server Error
error: failed to download from `https://static.crates.io/crates/serde_derive/1.0.103/download`

Caused by:
  failed to get successful HTTP response from `https://static.crates.io/crates/serde_derive/1.0.103/download` (151.101.2.137), got 500
  debug headers:
  x-served-by: cache-chi-kigq8000063-CHI
  body:
  Internal Server Error