[INFO] cloning repository https://github.com/liuchong/blockchain-tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/liuchong/blockchain-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliuchong%2Fblockchain-tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliuchong%2Fblockchain-tutorial'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d7fd3d0c8438c4893a2305fd2166ee6db8a982d5 [INFO] checking liuchong/blockchain-tutorial against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliuchong%2Fblockchain-tutorial" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/liuchong/blockchain-tutorial 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/liuchong/blockchain-tutorial [INFO] finished tweaking git repo https://github.com/liuchong/blockchain-tutorial [INFO] tweaked toml for git repo https://github.com/liuchong/blockchain-tutorial written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/liuchong/blockchain-tutorial 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] Downloading crates ... [INFO] [stderr] Downloaded generic-array v0.12.0 [INFO] [stderr] Downloaded sha2 v0.8.0 [INFO] [stderr] Downloaded block-padding v0.1.3 [INFO] [stderr] Downloaded block-buffer v0.7.0 [INFO] [stderr] Downloaded opaque-debug v0.2.2 [INFO] [stderr] Downloaded digest v0.8.0 [INFO] [stderr] Downloaded serde_derive v1.0.88 [INFO] [stderr] Downloaded hyper v0.12.24 [INFO] [stderr] Downloaded cc v1.0.29 [INFO] [stderr] Downloaded backtrace v0.3.14 [INFO] [stderr] Downloaded tokio-current-thread v0.1.4 [INFO] [stderr] Downloaded h2 v0.1.16 [INFO] [stderr] Downloaded regex v1.1.2 [INFO] [stderr] Downloaded http v0.1.16 [INFO] [stderr] Downloaded tokio v0.1.15 [INFO] [stderr] Downloaded crossbeam-channel v0.3.8 [INFO] [stderr] Downloaded tokio-io v0.1.11 [INFO] [stderr] Downloaded tokio-reactor v0.1.8 [INFO] [stderr] Downloaded crossbeam v0.6.0 [INFO] [stderr] Downloaded crossbeam-deque v0.6.3 [INFO] [stderr] Downloaded rand_jitter v0.1.3 [INFO] [stderr] Downloaded tokio-threadpool v0.1.11 [INFO] [stderr] Downloaded tokio-executor v0.1.6 [INFO] [stderr] Downloaded tokio-timer v0.2.10 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] d593fe22594783adc048b59e532d9e2e221ba6684b76d23626e562320e732d3a [INFO] running `Command { std: "docker" "start" "-a" "d593fe22594783adc048b59e532d9e2e221ba6684b76d23626e562320e732d3a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d593fe22594783adc048b59e532d9e2e221ba6684b76d23626e562320e732d3a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d593fe22594783adc048b59e532d9e2e221ba6684b76d23626e562320e732d3a", kill_on_drop: false }` [INFO] [stdout] d593fe22594783adc048b59e532d9e2e221ba6684b76d23626e562320e732d3a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f43d8f3f52d12e50a880b0f76d6dca29f1027bcf14794116a0d7ff87acb7f829 [INFO] running `Command { std: "docker" "start" "-a" "f43d8f3f52d12e50a880b0f76d6dca29f1027bcf14794116a0d7ff87acb7f829", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.49 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking futures v0.1.25 [INFO] [stderr] Compiling byteorder v1.3.1 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling proc-macro2 v0.4.27 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_jitter v0.1.3 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Checking smallvec v0.6.9 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking rand_os v0.1.2 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Compiling quote v0.6.11 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Compiling syn v0.15.26 [INFO] [stderr] Checking bytes v0.4.11 [INFO] [stderr] Checking num_cpus v1.10.0 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Compiling typenum v1.10.0 [INFO] [stderr] Compiling cc v1.0.29 [INFO] [stderr] Checking tokio-executor v0.1.6 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking tokio-io v0.1.11 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Checking lazycell v1.2.1 [INFO] [stderr] Checking mio v0.6.16 [INFO] [stderr] Checking crossbeam-epoch v0.7.1 [INFO] [stderr] Checking crossbeam-channel v0.3.8 [INFO] [stderr] Compiling backtrace v0.3.14 [INFO] [stderr] Checking crossbeam-deque v0.6.3 [INFO] [stderr] Checking itoa v0.4.3 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Compiling num-traits v0.2.6 [INFO] [stderr] Compiling regex v1.1.2 [INFO] [stderr] Checking tokio-reactor v0.1.8 [INFO] [stderr] Checking crossbeam v0.6.0 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Compiling serde v1.0.88 [INFO] [stderr] Compiling backtrace-sys v0.1.28 [INFO] [stderr] Compiling httparse v1.3.3 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking byte-tools v0.3.1 [INFO] [stderr] Checking generic-array v0.12.0 [INFO] [stderr] Compiling ryu v0.2.7 [INFO] [stderr] Checking rustc-demangle v0.1.13 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking block-padding v0.1.3 [INFO] [stderr] Checking regex-syntax v0.6.5 [INFO] [stderr] Checking http v0.1.16 [INFO] [stderr] Checking tokio-threadpool v0.1.11 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking tokio-timer v0.2.10 [INFO] [stderr] Checking tokio-current-thread v0.1.4 [INFO] [stderr] Compiling synstructure v0.10.1 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking string v0.1.3 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking try-lock v0.2.2 [INFO] [stderr] Checking indexmap v1.0.2 [INFO] [stderr] Checking want v0.0.6 [INFO] [stderr] Checking tokio v0.1.15 [INFO] [stderr] Checking block-buffer v0.7.0 [INFO] [stderr] Checking digest v0.8.0 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking fake-simd v0.1.2 [INFO] [stderr] Checking opaque-debug v0.2.2 [INFO] [stderr] Checking chrono v0.4.6 [INFO] [stderr] Checking hex v0.3.2 [INFO] [stderr] Checking sha2 v0.8.0 [INFO] [stderr] Compiling serde_derive v1.0.88 [INFO] [stderr] Checking h2 v0.1.16 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Checking dotenv v0.13.0 [INFO] [stderr] Checking hyper v0.12.24 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Checking blockchain-tutorial v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:30:27 [INFO] [stdout] | [INFO] [stdout] 30 | type ResponseFuture = Box, Error = hyper::Error> + Send>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 30 | type ResponseFuture = Box, Error = hyper::Error> + Send>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:30:27 [INFO] [stdout] | [INFO] [stdout] 30 | type ResponseFuture = Box, Error = hyper::Error> + Send>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 30 | type ResponseFuture = Box, Error = hyper::Error> + Send>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.48s [INFO] running `Command { std: "docker" "inspect" "f43d8f3f52d12e50a880b0f76d6dca29f1027bcf14794116a0d7ff87acb7f829", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f43d8f3f52d12e50a880b0f76d6dca29f1027bcf14794116a0d7ff87acb7f829", kill_on_drop: false }` [INFO] [stdout] f43d8f3f52d12e50a880b0f76d6dca29f1027bcf14794116a0d7ff87acb7f829