[INFO] fetching crate iron-json-response 0.6.0... [INFO] checking iron-json-response-0.6.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate iron-json-response 0.6.0 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate iron-json-response 0.6.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate iron-json-response 0.6.0 [INFO] finished tweaking crates.io crate iron-json-response 0.6.0 [INFO] tweaked toml for crates.io crate iron-json-response 0.6.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 88 packages [INFO] [stderr] Adding autocfg v0.1.8 (latest: v1.2.0) [INFO] [stderr] Adding base64 v0.9.3 (latest: v0.22.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding buf_redux v0.6.3 (latest: v0.8.4) [INFO] [stderr] Adding cloudabi v0.0.3 (latest: v0.1.0) [INFO] [stderr] Adding hyper v0.10.16 (latest: v1.2.0) [INFO] [stderr] Adding idna v0.1.5 (latest: v0.5.0) [INFO] [stderr] Adding language-tags v0.2.2 (latest: v0.3.2) [INFO] [stderr] Adding log v0.3.9 (latest: v0.4.21) [INFO] [stderr] Adding memchr v1.0.2 (latest: v2.7.2) [INFO] [stderr] Adding mime v0.2.6 (latest: v0.3.17) [INFO] [stderr] Adding mime_guess v1.8.8 (latest: v2.0.4) [INFO] [stderr] Adding multipart v0.13.6 (latest: v0.18.0) [INFO] [stderr] Adding num v0.1.42 (latest: v0.4.1) [INFO] [stderr] Adding num-bigint v0.1.44 (latest: v0.4.4) [INFO] [stderr] Adding num-complex v0.1.43 (latest: v0.4.5) [INFO] [stderr] Adding num-rational v0.1.42 (latest: v0.4.1) [INFO] [stderr] Adding percent-encoding v1.0.1 (latest: v2.3.1) [INFO] [stderr] Adding phf v0.7.24 (latest: v0.11.2) [INFO] [stderr] Adding phf_codegen v0.7.24 (latest: v0.11.2) [INFO] [stderr] Adding phf_generator v0.7.24 (latest: v0.11.2) [INFO] [stderr] Adding phf_shared v0.7.24 (latest: v0.11.2) [INFO] [stderr] Adding rand v0.3.23 (latest: v0.8.5) [INFO] [stderr] Adding rand v0.4.6 (latest: v0.8.5) [INFO] [stderr] Adding rand v0.6.5 (latest: v0.8.5) [INFO] [stderr] Adding rand_chacha v0.1.1 (latest: v0.3.1) [INFO] [stderr] Adding rand_core v0.3.1 (latest: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (latest: v0.6.4) [INFO] [stderr] Adding rand_hc v0.1.0 (latest: v0.3.2) [INFO] [stderr] Adding rand_isaac v0.1.1 (latest: v0.3.0) [INFO] [stderr] Adding rand_jitter v0.1.4 (latest: v0.4.0) [INFO] [stderr] Adding rand_os v0.1.3 (latest: v0.2.2) [INFO] [stderr] Adding rand_pcg v0.1.2 (latest: v0.3.1) [INFO] [stderr] Adding rand_xorshift v0.1.1 (latest: v0.3.0) [INFO] [stderr] Adding rdrand v0.4.0 (latest: v0.8.3) [INFO] [stderr] Adding remove_dir_all v0.5.3 (latest: v0.8.2) [INFO] [stderr] Adding safemem v0.2.0 (latest: v0.3.3) [INFO] [stderr] Adding siphasher v0.2.3 (latest: v1.0.1) [INFO] [stderr] Adding time v0.1.45 (latest: v0.3.34) [INFO] [stderr] Adding twoway v0.1.8 (latest: v0.2.2) [INFO] [stderr] Adding unicase v1.4.2 (latest: v2.7.0) [INFO] [stderr] Adding url v1.7.2 (latest: v2.5.0) [INFO] [stderr] Adding version_check v0.1.5 (latest: v0.9.4) [INFO] [stderr] Adding wasi v0.10.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded urlencoded v0.6.0 [INFO] [stderr] Downloaded modifier v0.1.0 [INFO] [stderr] Downloaded plugin v0.2.6 [INFO] [stderr] Downloaded iron v0.6.1 [INFO] [stderr] Downloaded multipart v0.13.6 [INFO] [stderr] Downloaded buf_redux v0.6.3 [INFO] [stderr] Downloaded persistent v0.4.0 [INFO] [stderr] Downloaded params v0.8.0 [INFO] [stderr] Downloaded bodyparser v0.8.0 [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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3c689945b92675b177e835002791af7af441a886efba0ea46d972bfea1698deb [INFO] running `Command { std: "docker" "start" "-a" "3c689945b92675b177e835002791af7af441a886efba0ea46d972bfea1698deb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3c689945b92675b177e835002791af7af441a886efba0ea46d972bfea1698deb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3c689945b92675b177e835002791af7af441a886efba0ea46d972bfea1698deb", kill_on_drop: false }` [INFO] [stdout] 3c689945b92675b177e835002791af7af441a886efba0ea46d972bfea1698deb [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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fe5de82db3c04dc18d00a68b8cc1ab39c988ff6b9229c230d08783a6bf8f57e3 [INFO] running `Command { std: "docker" "start" "-a" "fe5de82db3c04dc18d00a68b8cc1ab39c988ff6b9229c230d08783a6bf8f57e3", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.2.0 [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling siphasher v0.2.3 [INFO] [stderr] Checking log v0.4.21 [INFO] [stderr] Checking tinyvec_macros v0.1.1 [INFO] [stderr] Compiling httparse v1.8.0 [INFO] [stderr] Checking traitobject v0.1.0 [INFO] [stderr] Checking unicode-bidi v0.3.15 [INFO] [stderr] Checking matches v0.1.10 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Checking safemem v0.3.3 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Checking typeable v0.1.2 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Checking tinyvec v1.6.0 [INFO] [stderr] Checking language-tags v0.2.2 [INFO] [stderr] Checking modifier v0.1.0 [INFO] [stderr] Checking unsafe-any v0.4.2 [INFO] [stderr] Compiling serde_json v1.0.115 [INFO] [stderr] Checking ryu v1.0.17 [INFO] [stderr] Checking typemap v0.3.3 [INFO] [stderr] Checking rustc-serialize v0.3.25 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling autocfg v0.1.8 [INFO] [stderr] Compiling rand_jitter v0.1.4 [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking plugin v0.2.6 [INFO] [stderr] Checking base64 v0.9.3 [INFO] [stderr] Checking itoa v1.0.11 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Checking safemem v0.2.0 [INFO] [stderr] Checking mime v0.2.6 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Compiling phf_shared v0.7.24 [INFO] [stderr] Compiling phf v0.7.24 [INFO] [stderr] Checking unicode-normalization v0.1.23 [INFO] [stderr] Checking twoway v0.1.8 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking memchr v1.0.2 [INFO] [stderr] Checking buf_redux v0.6.3 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking tempdir v0.3.7 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking num-complex v0.1.43 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking num-bigint v0.1.44 [INFO] [stderr] Checking num-iter v0.1.44 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Compiling phf_codegen v0.7.24 [INFO] [stderr] Compiling mime_guess v1.8.8 [INFO] [stderr] Checking hyper v0.10.16 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking num v0.1.42 [INFO] [stderr] Checking multipart v0.13.6 [INFO] [stderr] Checking iron v0.6.1 [INFO] [stderr] Checking persistent v0.4.0 [INFO] [stderr] Checking bodyparser v0.8.0 [INFO] [stderr] Checking iron-json-response v0.6.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lib.rs:92:24 [INFO] [stdout] | [INFO] [stdout] 92 | err.response = try!(self.after(req, err.response)); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking urlencoded v0.6.0 [INFO] [stderr] Checking params v0.8.0 [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lib.rs:92:24 [INFO] [stdout] | [INFO] [stdout] 92 | err.response = try!(self.after(req, err.response)); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.94s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint v0.1.44, num-complex v0.1.43, num-rational v0.1.42, traitobject v0.1.0 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] running `Command { std: "docker" "inspect" "fe5de82db3c04dc18d00a68b8cc1ab39c988ff6b9229c230d08783a6bf8f57e3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fe5de82db3c04dc18d00a68b8cc1ab39c988ff6b9229c230d08783a6bf8f57e3", kill_on_drop: false }` [INFO] [stdout] fe5de82db3c04dc18d00a68b8cc1ab39c988ff6b9229c230d08783a6bf8f57e3 [INFO] checking iron-json-response-0.6.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate iron-json-response 0.6.0 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate iron-json-response 0.6.0 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate iron-json-response 0.6.0 [INFO] finished tweaking crates.io crate iron-json-response 0.6.0 [INFO] tweaked toml for crates.io crate iron-json-response 0.6.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9f2a04a28f4415ae3c572831df11eeb3fb07374aa090a7521bb81983ebc0e7cc [INFO] running `Command { std: "docker" "start" "-a" "9f2a04a28f4415ae3c572831df11eeb3fb07374aa090a7521bb81983ebc0e7cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9f2a04a28f4415ae3c572831df11eeb3fb07374aa090a7521bb81983ebc0e7cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9f2a04a28f4415ae3c572831df11eeb3fb07374aa090a7521bb81983ebc0e7cc", kill_on_drop: false }` [INFO] [stdout] 9f2a04a28f4415ae3c572831df11eeb3fb07374aa090a7521bb81983ebc0e7cc [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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bbef9f01e98443580a4d58a185946f9408e37d8457b08f137f22b0bb2038fb80 [INFO] running `Command { std: "docker" "start" "-a" "bbef9f01e98443580a4d58a185946f9408e37d8457b08f137f22b0bb2038fb80", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.2.0 [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling siphasher v0.2.3 [INFO] [stderr] Checking tinyvec_macros v0.1.1 [INFO] [stderr] Checking log v0.4.21 [INFO] [stderr] Compiling httparse v1.8.0 [INFO] [stderr] Checking traitobject v0.1.0 [INFO] [stderr] Checking matches v0.1.10 [INFO] [stderr] Checking unicode-bidi v0.3.15 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Checking safemem v0.3.3 [INFO] [stderr] Checking language-tags v0.2.2 [INFO] [stderr] Checking tinyvec v1.6.0 [INFO] [stderr] Checking typeable v0.1.2 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Checking unsafe-any v0.4.2 [INFO] [stderr] Checking modifier v0.1.0 [INFO] [stderr] Compiling serde_json v1.0.115 [INFO] [stderr] Checking ryu v1.0.17 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand_jitter v0.1.4 [INFO] [stderr] Checking typemap v0.3.3 [INFO] [stderr] Checking itoa v1.0.11 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Compiling autocfg v0.1.8 [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Checking base64 v0.9.3 [INFO] [stderr] Checking plugin v0.2.6 [INFO] [stderr] Checking mime v0.2.6 [INFO] [stderr] Checking rustc-serialize v0.3.25 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Checking safemem v0.2.0 [INFO] [stderr] Checking memchr v2.7.2 [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 num-traits v0.2.18 [INFO] [stderr] Compiling phf_shared v0.7.24 [INFO] [stderr] Compiling phf v0.7.24 [INFO] [stderr] Checking unicode-normalization v0.1.23 [INFO] [stderr] Checking twoway v0.1.8 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking memchr v1.0.2 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.25/src/json.rs:1387:20 [INFO] [stdout] | [INFO] [stdout] 1387 | _ => { panic!(); } [INFO] [stdout] | ^^^^^^^^ cannot infer type [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking buf_redux v0.6.3 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking tempdir v0.3.7 [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "bbef9f01e98443580a4d58a185946f9408e37d8457b08f137f22b0bb2038fb80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bbef9f01e98443580a4d58a185946f9408e37d8457b08f137f22b0bb2038fb80", kill_on_drop: false }` [INFO] [stdout] bbef9f01e98443580a4d58a185946f9408e37d8457b08f137f22b0bb2038fb80