[INFO] fetching crate memcached-rs 0.4.2... [INFO] checking memcached-rs-0.4.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate memcached-rs 0.4.2 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate memcached-rs 0.4.2 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 memcached-rs 0.4.2 [INFO] finished tweaking crates.io crate memcached-rs 0.4.2 [INFO] tweaked toml for crates.io crate memcached-rs 0.4.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate crates.io crate memcached-rs 0.4.2 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cfg-if v0.1.6 [INFO] [stderr] Downloaded wincolor v1.0.1 [INFO] [stderr] Downloaded md5 v0.3.8 [INFO] [stderr] Downloaded conhash v0.4.0 [INFO] [stderr] Downloaded redox_syscall v0.1.40 [INFO] [stderr] Downloaded byteorder v1.2.7 [INFO] [stderr] Downloaded aho-corasick v0.6.9 [INFO] [stderr] Downloaded lazy_static v1.2.0 [INFO] [stderr] Downloaded memchr v2.1.1 [INFO] [stderr] Downloaded utf8-ranges v1.0.2 [INFO] [stderr] Downloaded termcolor v1.0.4 [INFO] [stderr] Downloaded regex v1.0.6 [INFO] [stderr] Downloaded unix_socket v0.5.0 [INFO] [stderr] Downloaded ucd-util v0.1.2 [INFO] [stderr] Downloaded regex-syntax v0.6.3 [INFO] [stderr] Downloaded winapi-util v0.1.1 [INFO] [stderr] Downloaded winapi v0.3.6 [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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b82758d3308a60230f452b52b937699acd6df72a68f56899dcdc007e3d267242 [INFO] running `Command { std: "docker" "start" "-a" "b82758d3308a60230f452b52b937699acd6df72a68f56899dcdc007e3d267242", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b82758d3308a60230f452b52b937699acd6df72a68f56899dcdc007e3d267242", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b82758d3308a60230f452b52b937699acd6df72a68f56899dcdc007e3d267242", kill_on_drop: false }` [INFO] [stdout] b82758d3308a60230f452b52b937699acd6df72a68f56899dcdc007e3d267242 [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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 47f9c79cf021ef2d92b8cb9a4c136e8076ff05c84360eda93c87e7216e1aa4af [INFO] running `Command { std: "docker" "start" "-a" "47f9c79cf021ef2d92b8cb9a4c136e8076ff05c84360eda93c87e7216e1aa4af", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking ucd-util v0.1.2 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Compiling regex v1.0.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex-syntax v0.6.3 [INFO] [stderr] Checking md5 v0.3.8 [INFO] [stderr] Compiling memchr v2.1.1 [INFO] [stderr] Checking semver-parser v0.7.0 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking conhash v0.4.0 [INFO] [stderr] Checking semver v0.9.0 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking byteorder v1.2.7 [INFO] [stderr] Checking bufstream v0.1.4 [INFO] [stderr] Checking termcolor v1.0.4 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking unix_socket v0.5.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking aho-corasick v0.6.9 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking memcached-rs v0.4.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/proto/mod.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/proto/binary.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `String` is imported redundantly [INFO] [stdout] --> src/proto/binary.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | use std::string::String; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `String` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/proto/mod.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/proto/binary.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `String` is imported redundantly [INFO] [stdout] --> src/proto/binary.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | use std::string::String; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `String` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.97s [INFO] running `Command { std: "docker" "inspect" "47f9c79cf021ef2d92b8cb9a4c136e8076ff05c84360eda93c87e7216e1aa4af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "47f9c79cf021ef2d92b8cb9a4c136e8076ff05c84360eda93c87e7216e1aa4af", kill_on_drop: false }` [INFO] [stdout] 47f9c79cf021ef2d92b8cb9a4c136e8076ff05c84360eda93c87e7216e1aa4af [INFO] checking memcached-rs-0.4.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate memcached-rs 0.4.2 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate memcached-rs 0.4.2 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 memcached-rs 0.4.2 [INFO] finished tweaking crates.io crate memcached-rs 0.4.2 [INFO] tweaked toml for crates.io crate memcached-rs 0.4.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate crates.io crate memcached-rs 0.4.2 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 04673047f285a1303afef1da129d7f02e9d61be0cd8323d6a1c193af166224dc [INFO] running `Command { std: "docker" "start" "-a" "04673047f285a1303afef1da129d7f02e9d61be0cd8323d6a1c193af166224dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "04673047f285a1303afef1da129d7f02e9d61be0cd8323d6a1c193af166224dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "04673047f285a1303afef1da129d7f02e9d61be0cd8323d6a1c193af166224dc", kill_on_drop: false }` [INFO] [stdout] 04673047f285a1303afef1da129d7f02e9d61be0cd8323d6a1c193af166224dc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1e93fbd24f8fc4620c4a1ec1989c7d5ffe2e44736865ac49624532957e906cc0 [INFO] running `Command { std: "docker" "start" "-a" "1e93fbd24f8fc4620c4a1ec1989c7d5ffe2e44736865ac49624532957e906cc0", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Compiling regex v1.0.6 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Checking ucd-util v0.1.2 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex-syntax v0.6.3 [INFO] [stderr] Checking md5 v0.3.8 [INFO] [stderr] Compiling memchr v2.1.1 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Checking semver-parser v0.7.0 [INFO] [stderr] Checking conhash v0.4.0 [INFO] [stderr] Checking byteorder v1.2.7 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking bufstream v0.1.4 [INFO] [stderr] Checking termcolor v1.0.4 [INFO] [stderr] Checking semver v0.9.0 [INFO] [stderr] Checking unix_socket v0.5.0 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking aho-corasick v0.6.9 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.0.6/src/exec.rs:754:13 [INFO] [stdout] | [INFO] [stdout] 754 | / match dfa::Fsm::reverse( [INFO] [stdout] 755 | | &self.ro.dfa_reverse, [INFO] [stdout] 756 | | self.cache, [INFO] [stdout] 757 | | false, [INFO] [stdout] ... | [INFO] [stdout] 764 | | Quit => return Some(Quit), [INFO] [stdout] 765 | | }; [INFO] [stdout] | |_____________^ cannot infer type [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking memcached-rs v0.4.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/proto/mod.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/proto/binary.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `String` is imported redundantly [INFO] [stdout] --> src/proto/binary.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | use std::string::String; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `String` is already defined here [INFO] [stdout] [INFO] [stdout] [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 `regex` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "1e93fbd24f8fc4620c4a1ec1989c7d5ffe2e44736865ac49624532957e906cc0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1e93fbd24f8fc4620c4a1ec1989c7d5ffe2e44736865ac49624532957e906cc0", kill_on_drop: false }` [INFO] [stdout] 1e93fbd24f8fc4620c4a1ec1989c7d5ffe2e44736865ac49624532957e906cc0