[INFO] cloning repository https://github.com/levi92l/contracts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/levi92l/contracts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevi92l%2Fcontracts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevi92l%2Fcontracts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8305d3656de4e1b3bd062d42f4ddac39096bbdf
[INFO] checking levi92l/contracts against master#8202d110516c6bd87cee375e9a9b774db499015c for pr-149596
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevi92l%2Fcontracts" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/levi92l/contracts
[INFO] finished tweaking git repo https://github.com/levi92l/contracts
[INFO] tweaked toml for git repo https://github.com/levi92l/contracts written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/levi92l/contracts on toolchain 8202d110516c6bd87cee375e9a9b774db499015c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/levi92l/contracts 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" "+8202d110516c6bd87cee375e9a9b774db499015c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4ee6f5b5d39720f9ad434d681afd680492b87705be5b7bff4fa58cdfdd065a7
[INFO] running `Command { std: "docker" "start" "-a" "a4ee6f5b5d39720f9ad434d681afd680492b87705be5b7bff4fa58cdfdd065a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4ee6f5b5d39720f9ad434d681afd680492b87705be5b7bff4fa58cdfdd065a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4ee6f5b5d39720f9ad434d681afd680492b87705be5b7bff4fa58cdfdd065a7", kill_on_drop: false }`
[INFO] [stdout] a4ee6f5b5d39720f9ad434d681afd680492b87705be5b7bff4fa58cdfdd065a7
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66b25fa37bfd5534188d81024909781703041858762e8a7c5d4b3f78cc4a002c
[INFO] running `Command { std: "docker" "start" "-a" "66b25fa37bfd5534188d81024909781703041858762e8a7c5d4b3f78cc4a002c", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling libc v0.2.152
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[INFO] [stderr]     Checking const-oid v0.9.5
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking memchr v2.7.2
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[INFO] [stderr]    Compiling serde_core v1.0.226
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[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking multibase v0.9.1
[INFO] [stderr]     Checking cosmwasm-std v2.2.2
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking clap v4.5.4
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking lazy-regex v3.1.0
[INFO] [stderr]     Checking globwalk v0.9.1
[INFO] [stderr]     Checking ripemd v0.1.3
[INFO] [stderr]    Compiling smart-default v0.7.1
[INFO] [stderr]    Compiling cucumber-codegen v0.21.1
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking drain_filter_polyfill v0.1.3
[INFO] [stderr]     Checking unsigned-varint v0.8.0
[INFO] [stderr]     Checking inventory v0.3.15
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking cucumber v0.21.1
[INFO] [stderr]     Checking cw-storage-plus v2.0.0
[INFO] [stderr]     Checking cw-utils v2.0.0
[INFO] [stderr]     Checking axone-rdf v7.0.0 (/opt/rustwide/workdir/packages/axone-rdf)
[INFO] [stderr]     Checking cw-address-like v2.0.0
[INFO] [stderr]     Checking testing v5.0.0 (/opt/rustwide/workdir/packages/testing)
[INFO] [stderr]     Checking axone-logic-bindings v7.0.0 (/opt/rustwide/workdir/packages/axone-logic-bindings)
[INFO] [stderr]     Checking cw2 v2.0.0
[INFO] [stderr]     Checking cw-ownable v2.1.0
[INFO] [stderr]     Checking axone-cognitarium v7.0.0 (/opt/rustwide/workdir/contracts/axone-cognitarium)
[INFO] [stderr]     Checking axone-objectarium v7.0.0 (/opt/rustwide/workdir/contracts/axone-objectarium)
[INFO] [stderr]     Checking axone-objectarium-client v7.0.0 (/opt/rustwide/workdir/packages/axone-objectarium-client)
[INFO] [stderr]     Checking axone-law-stone v7.0.0 (/opt/rustwide/workdir/contracts/axone-law-stone)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> contracts/axone-law-stone/src/helper.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 |         .exactly_one()
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]   --> contracts/axone-law-stone/src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(exact_length_collection)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> contracts/axone-law-stone/src/helper.rs:72:10
[INFO] [stdout]    |
[INFO] [stdout] 72 |         .exactly_one()
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]   --> contracts/axone-law-stone/src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(exact_length_collection)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> contracts/axone-law-stone/src/helper.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 |         .exactly_one()
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]   --> contracts/axone-law-stone/src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(exact_length_collection)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> contracts/axone-law-stone/src/helper.rs:72:10
[INFO] [stdout]    |
[INFO] [stdout] 72 |         .exactly_one()
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]   --> contracts/axone-law-stone/src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(exact_length_collection)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking axone-cognitarium-client v7.0.0 (/opt/rustwide/workdir/packages/axone-cognitarium-client)
[INFO] [stderr]     Checking axone-dataverse v7.0.0 (/opt/rustwide/workdir/contracts/axone-dataverse)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:104:14
[INFO] [stdout]     |
[INFO] [stdout] 104 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:140:14
[INFO] [stdout]     |
[INFO] [stdout] 140 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:169:14
[INFO] [stdout]     |
[INFO] [stdout] 169 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:196:14
[INFO] [stdout]     |
[INFO] [stdout] 196 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:222:14
[INFO] [stdout]     |
[INFO] [stdout] 222 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:266:14
[INFO] [stdout]     |
[INFO] [stdout] 266 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:478:14
[INFO] [stdout]     |
[INFO] [stdout] 478 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/vc.rs:139:14
[INFO] [stdout]     |
[INFO] [stdout] 139 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/vc.rs:177:14
[INFO] [stdout]     |
[INFO] [stdout] 177 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/vc.rs:199:14
[INFO] [stdout]     |
[INFO] [stdout] 199 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/vc.rs:283:30
[INFO] [stdout]     |
[INFO] [stdout] 283 | ...                   .exactly_one()
[INFO] [stdout]     |                        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:104:14
[INFO] [stdout]     |
[INFO] [stdout] 104 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:140:14
[INFO] [stdout]     |
[INFO] [stdout] 140 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:169:14
[INFO] [stdout]     |
[INFO] [stdout] 169 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:196:14
[INFO] [stdout]     |
[INFO] [stdout] 196 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:222:14
[INFO] [stdout]     |
[INFO] [stdout] 222 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:266:14
[INFO] [stdout]     |
[INFO] [stdout] 266 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> contracts/axone-dataverse/src/registrar/credential.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |             .exactly_one()
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]   --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(exact_length_collection)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> contracts/axone-dataverse/src/registrar/credential.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |         vc.claims.iter().exactly_one().map_err(|_| {
[INFO] [stdout]    |                          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]   --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(exact_length_collection)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/proof.rs:478:14
[INFO] [stdout]     |
[INFO] [stdout] 478 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/vc.rs:139:14
[INFO] [stdout]     |
[INFO] [stdout] 139 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/vc.rs:177:14
[INFO] [stdout]     |
[INFO] [stdout] 177 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/vc.rs:199:14
[INFO] [stdout]     |
[INFO] [stdout] 199 |             .exactly_one()
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> contracts/axone-dataverse/src/credential/vc.rs:283:30
[INFO] [stdout]     |
[INFO] [stdout] 283 | ...                   .exactly_one()
[INFO] [stdout]     |                        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]    --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(exact_length_collection)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> contracts/axone-dataverse/src/registrar/credential.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |             .exactly_one()
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]   --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(exact_length_collection)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> contracts/axone-dataverse/src/registrar/credential.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |         vc.claims.iter().exactly_one().map_err(|_| {
[INFO] [stdout]    |                          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]   --> contracts/axone-dataverse/src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(exact_length_collection)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 54s
[INFO] running `Command { std: "docker" "inspect" "66b25fa37bfd5534188d81024909781703041858762e8a7c5d4b3f78cc4a002c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66b25fa37bfd5534188d81024909781703041858762e8a7c5d4b3f78cc4a002c", kill_on_drop: false }`
[INFO] [stdout] 66b25fa37bfd5534188d81024909781703041858762e8a7c5d4b3f78cc4a002c
