[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 master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frutaihwa%2F04_data_formats" "/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/rutaihwa/04_data_formats on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-4-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded queryst v2.0.0 [INFO] [stderr] Downloaded smallvec v0.6.12 [INFO] [stderr] Downloaded base64-serde v0.3.2 [INFO] [stderr] Downloaded tokio-threadpool v0.1.16 [INFO] [stderr] Downloaded hyper v0.12.35 [INFO] [stderr] Downloaded unicode-normalization v0.1.9 [INFO] [stderr] Downloaded syn v1.0.7 [INFO] [stderr] Downloaded http v0.1.19 [INFO] [stderr] Downloaded serde_cbor v0.8.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 894bc5b73b5d4155c939af962d64c7d5a6938b4432ef81276be3bdedbba81d2c [INFO] running `Command { std: "docker" "start" "-a" "894bc5b73b5d4155c939af962d64c7d5a6938b4432ef81276be3bdedbba81d2c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "894bc5b73b5d4155c939af962d64c7d5a6938b4432ef81276be3bdedbba81d2c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "894bc5b73b5d4155c939af962d64c7d5a6938b4432ef81276be3bdedbba81d2c", kill_on_drop: false }` [INFO] [stdout] 894bc5b73b5d4155c939af962d64c7d5a6938b4432ef81276be3bdedbba81d2c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3f7f87e82ca50019c30192484aaf8d6eccfb1e8db62640c718ca525544a0a3a9 [INFO] running `Command { std: "docker" "start" "-a" "3f7f87e82ca50019c30192484aaf8d6eccfb1e8db62640c718ca525544a0a3a9", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking futures v0.1.29 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking smallvec v0.6.12 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling arrayvec v0.4.12 [INFO] [stderr] Checking nodrop v0.1.14 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Compiling syn v1.0.7 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Compiling serde v1.0.102 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Checking lock_api v0.3.1 [INFO] [stderr] Compiling cc v1.0.47 [INFO] [stderr] Compiling ryu v1.0.2 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Checking unicode-normalization v0.1.9 [INFO] [stderr] Compiling failure_derive v0.1.6 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Compiling indexmap v1.3.0 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Checking ucd-util v0.1.5 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Compiling hyper v0.12.35 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking rustc-demangle v0.1.16 [INFO] [stderr] Checking utf8-ranges v1.0.4 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Checking try-lock v0.2.2 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking tokio-executor v0.1.8 [INFO] [stderr] Checking tokio-sync v0.1.7 [INFO] [stderr] Checking want v0.2.0 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Checking tokio-timer v0.2.11 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.11.0 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking parking_lot_core v0.6.2 [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] Checking parking_lot v0.9.0 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking tokio-threadpool v0.1.16 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking http v0.1.19 [INFO] [stderr] Checking string v0.2.1 [INFO] [stderr] Checking tokio-buf v0.1.1 [INFO] [stderr] Checking tokio-reactor v0.1.10 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking backtrace v0.3.40 [INFO] [stderr] Checking serde_json v1.0.41 [INFO] [stderr] Checking serde_cbor v0.8.2 [INFO] [stderr] Checking base64-serde v0.3.2 [INFO] [stderr] Checking http-body v0.1.0 [INFO] [stderr] Checking h2 v0.1.26 [INFO] [stderr] Checking queryst v2.0.0 [INFO] [stderr] Compiling synstructure v0.12.2 [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` profile [unoptimized + debuginfo] target(s) in 12.34s [INFO] running `Command { std: "docker" "inspect" "3f7f87e82ca50019c30192484aaf8d6eccfb1e8db62640c718ca525544a0a3a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3f7f87e82ca50019c30192484aaf8d6eccfb1e8db62640c718ca525544a0a3a9", kill_on_drop: false }` [INFO] [stdout] 3f7f87e82ca50019c30192484aaf8d6eccfb1e8db62640c718ca525544a0a3a9 [INFO] checking rutaihwa/04_data_formats against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frutaihwa%2F04_data_formats" "/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/rutaihwa/04_data_formats on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-4-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f1aedea6c2dfaddd7e89e7bd3f0feb19b57d36aaa1b63d55807806462af4f4bc [INFO] running `Command { std: "docker" "start" "-a" "f1aedea6c2dfaddd7e89e7bd3f0feb19b57d36aaa1b63d55807806462af4f4bc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f1aedea6c2dfaddd7e89e7bd3f0feb19b57d36aaa1b63d55807806462af4f4bc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f1aedea6c2dfaddd7e89e7bd3f0feb19b57d36aaa1b63d55807806462af4f4bc", kill_on_drop: false }` [INFO] [stdout] f1aedea6c2dfaddd7e89e7bd3f0feb19b57d36aaa1b63d55807806462af4f4bc [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" "-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 080ded29639dd5ccea633782af2311b21bf4c4a23efd2652a1c440fd7b2d9ff4 [INFO] running `Command { std: "docker" "start" "-a" "080ded29639dd5ccea633782af2311b21bf4c4a23efd2652a1c440fd7b2d9ff4", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking futures v0.1.29 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking smallvec v0.6.12 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling arrayvec v0.4.12 [INFO] [stderr] Compiling serde v1.0.102 [INFO] [stderr] Compiling syn v1.0.7 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking nodrop v0.1.14 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling cc v1.0.47 [INFO] [stderr] Checking lock_api v0.3.1 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling ryu v1.0.2 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Checking unicode-normalization v0.1.9 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Compiling failure_derive v0.1.6 [INFO] [stderr] Compiling indexmap v1.3.0 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking ucd-util v0.1.5 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Compiling hyper v0.12.35 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Checking rustc-demangle v0.1.16 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking try-lock v0.2.2 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Checking utf8-ranges v1.0.4 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking tokio-executor v0.1.8 [INFO] [stderr] Checking tokio-sync v0.1.7 [INFO] [stderr] Checking want v0.2.0 [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 parking_lot_core v0.6.2 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking tokio-timer v0.2.11 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking parking_lot v0.9.0 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking rand v0.5.6 [INFO] [stderr] Checking tokio-threadpool v0.1.16 [INFO] [stderr] Checking mio v0.6.19 [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 tokio-reactor v0.1.10 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking backtrace v0.3.40 [INFO] [stderr] Compiling synstructure v0.12.2 [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] Checking http-body v0.1.0 [INFO] [stderr] Checking h2 v0.1.26 [INFO] [stderr] Compiling serde_derive v1.0.102 [INFO] [stderr] Checking queryst v2.0.0 [INFO] [stderr] Checking failure v0.1.6 [INFO] [stderr] Checking data_formats v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.67s [INFO] running `Command { std: "docker" "inspect" "080ded29639dd5ccea633782af2311b21bf4c4a23efd2652a1c440fd7b2d9ff4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "080ded29639dd5ccea633782af2311b21bf4c4a23efd2652a1c440fd7b2d9ff4", kill_on_drop: false }` [INFO] [stdout] 080ded29639dd5ccea633782af2311b21bf4c4a23efd2652a1c440fd7b2d9ff4