[INFO] cloning repository https://github.com/rutaihwa/04_data_formats
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rutaihwa/04_data_formats" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frutaihwa%2F04_data_formats", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frutaihwa%2F04_data_formats'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 830703a350a4eeb3280edaa679a8048857ec3c24
[INFO] checking rutaihwa/04_data_formats against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frutaihwa%2F04_data_formats" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rutaihwa/04_data_formats on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rutaihwa/04_data_formats
[INFO] finished tweaking git repo https://github.com/rutaihwa/04_data_formats
[INFO] tweaked toml for git repo https://github.com/rutaihwa/04_data_formats written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/rutaihwa/04_data_formats already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smallvec v0.6.12
[INFO] [stderr]   Downloaded ucd-util v0.1.5
[INFO] [stderr]   Downloaded base64-serde v0.3.2
[INFO] [stderr]   Downloaded serde_cbor v0.8.2
[INFO] [stderr]   Downloaded queryst v2.0.0
[INFO] [stderr]   Downloaded synstructure v0.12.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c4466b8af88fa8c04d589f35ee15706a13d5e47be5138b2706cbe187ad0dc62
[INFO] running `Command { std: "docker" "start" "-a" "1c4466b8af88fa8c04d589f35ee15706a13d5e47be5138b2706cbe187ad0dc62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c4466b8af88fa8c04d589f35ee15706a13d5e47be5138b2706cbe187ad0dc62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c4466b8af88fa8c04d589f35ee15706a13d5e47be5138b2706cbe187ad0dc62", kill_on_drop: false }`
[INFO] [stdout] 1c4466b8af88fa8c04d589f35ee15706a13d5e47be5138b2706cbe187ad0dc62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c343d2b11c894ef6d319674f69cfdeddfacc51f70bc91561b7294a111d39cc5
[INFO] running `Command { std: "docker" "start" "-a" "7c343d2b11c894ef6d319674f69cfdeddfacc51f70bc91561b7294a111d39cc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking smallvec v0.6.12
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]     Checking tokio-sync v0.1.7
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking unicode-normalization v0.1.9
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.11.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.19
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking base64-serde v0.3.2
[INFO] [stderr]     Checking serde_cbor v0.8.2
[INFO] [stderr]    Compiling synstructure v0.12.2
[INFO] [stderr]     Checking queryst v2.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking data_formats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.50s
[INFO] running `Command { std: "docker" "inspect" "7c343d2b11c894ef6d319674f69cfdeddfacc51f70bc91561b7294a111d39cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c343d2b11c894ef6d319674f69cfdeddfacc51f70bc91561b7294a111d39cc5", kill_on_drop: false }`
[INFO] [stdout] 7c343d2b11c894ef6d319674f69cfdeddfacc51f70bc91561b7294a111d39cc5