[INFO] fetching crate izia 0.5.0...
[INFO] checking izia-0.5.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate izia 0.5.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate izia 0.5.0 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 izia 0.5.0
[INFO] finished tweaking crates.io crate izia 0.5.0
[INFO] tweaked toml for crates.io crate izia 0.5.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate izia 0.5.0 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 snafu v0.5.0
[INFO] [stderr]   Downloaded zia v0.5.0
[INFO] [stderr]   Downloaded smallstr v0.1.0
[INFO] [stderr]   Downloaded snafu-derive v0.5.0
[INFO] [stderr]   Downloaded bitflags v0.4.0
[INFO] [stderr]   Downloaded mortal v0.1.5
[INFO] [stderr]   Downloaded nix v0.7.0
[INFO] [stderr]   Downloaded terminfo v0.6.1
[INFO] [stderr]   Downloaded linefeed v0.5.4
[INFO] [stderr]   Downloaded backtrace v0.3.43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] bccb9c698f6f1bc61ac3446030b30da0666d5b0effee6065571e223d71e7241d
[INFO] running `Command { std: "docker" "start" "-a" "bccb9c698f6f1bc61ac3446030b30da0666d5b0effee6065571e223d71e7241d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bccb9c698f6f1bc61ac3446030b30da0666d5b0effee6065571e223d71e7241d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bccb9c698f6f1bc61ac3446030b30da0666d5b0effee6065571e223d71e7241d", kill_on_drop: false }`
[INFO] [stdout] bccb9c698f6f1bc61ac3446030b30da0666d5b0effee6065571e223d71e7241d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] e53530cd882a3604db6550fd2dc1ab8f087443f931ac073f2c96c3df14e7c580
[INFO] running `Command { std: "docker" "start" "-a" "e53530cd882a3604db6550fd2dc1ab8f087443f931ac073f2c96c3df14e7c580", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[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 rand_jitter v0.1.4
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]    Compiling terminfo v0.6.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking smallstr v0.1.0
[INFO] [stderr]     Checking backtrace v0.3.43
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking slog-term v2.5.0
[INFO] [stderr]    Compiling snafu-derive v0.5.0
[INFO] [stderr]     Checking snafu v0.5.0
[INFO] [stderr]     Checking zia v0.5.0
[INFO] [stderr]     Checking mortal v0.1.5
[INFO] [stderr]     Checking linefeed v0.5.4
[INFO] [stderr]     Checking izia v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.98s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3, terminfo v0.6.1
[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" "e53530cd882a3604db6550fd2dc1ab8f087443f931ac073f2c96c3df14e7c580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e53530cd882a3604db6550fd2dc1ab8f087443f931ac073f2c96c3df14e7c580", kill_on_drop: false }`
[INFO] [stdout] e53530cd882a3604db6550fd2dc1ab8f087443f931ac073f2c96c3df14e7c580
[INFO] checking izia-0.5.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate izia 0.5.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate izia 0.5.0 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 izia 0.5.0
[INFO] finished tweaking crates.io crate izia 0.5.0
[INFO] tweaked toml for crates.io crate izia 0.5.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate izia 0.5.0 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 487719607fbe3447146e77240239b6ac49b05fa522bc43022d3ad85643a61ecd
[INFO] running `Command { std: "docker" "start" "-a" "487719607fbe3447146e77240239b6ac49b05fa522bc43022d3ad85643a61ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "487719607fbe3447146e77240239b6ac49b05fa522bc43022d3ad85643a61ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "487719607fbe3447146e77240239b6ac49b05fa522bc43022d3ad85643a61ecd", kill_on_drop: false }`
[INFO] [stdout] 487719607fbe3447146e77240239b6ac49b05fa522bc43022d3ad85643a61ecd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c0f2873739d689075802a87fa807551b80b997f6319a6c7046bea77f7be06faf
[INFO] running `Command { std: "docker" "start" "-a" "c0f2873739d689075802a87fa807551b80b997f6319a6c7046bea77f7be06faf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling rand_core v0.3.1
[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]    Compiling rand_jitter v0.1.4
[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 phf_shared v0.7.24
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling terminfo v0.6.1
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking smallstr v0.1.0
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking backtrace v0.3.43
[INFO] [stderr]     Checking slog-term v2.5.0
[INFO] [stderr]    Compiling snafu-derive v0.5.0
[INFO] [stderr]     Checking snafu v0.5.0
[INFO] [stderr]     Checking zia v0.5.0
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/zia-0.5.0/src/snap_shot.rs:138:21
[INFO] [stdout]     |
[INFO] [stdout] 138 | /                     if removed_gaps.contains(&id) {
[INFO] [stdout] 139 | |                         continue;
[INFO] [stdout] 140 | |                     } else {
[INFO] [stdout] 141 | |                         index = id;
[INFO] [stdout] 142 | |                         break;
[INFO] [stdout] 143 | |                     }
[INFO] [stdout]     | |_____________________^ cannot satisfy `_ -> _`
[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 E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zia` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c0f2873739d689075802a87fa807551b80b997f6319a6c7046bea77f7be06faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0f2873739d689075802a87fa807551b80b997f6319a6c7046bea77f7be06faf", kill_on_drop: false }`
[INFO] [stdout] c0f2873739d689075802a87fa807551b80b997f6319a6c7046bea77f7be06faf