[INFO] fetching crate dhall 0.12.0... [INFO] checking dhall-0.12.0 against master#18a6d911caba59605eb03db1452848a85d2e5879 for pr-112743 [INFO] extracting crate dhall 0.12.0 into /workspace/builds/worker-0-tc1/source [INFO] validating manifest of crates.io crate dhall 0.12.0 on toolchain 18a6d911caba59605eb03db1452848a85d2e5879 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate dhall 0.12.0 [INFO] removed 1 missing tests [INFO] finished tweaking crates.io crate dhall 0.12.0 [INFO] tweaked toml for crates.io crate dhall 0.12.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "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" "+18a6d911caba59605eb03db1452848a85d2e5879" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded pest_consume v1.1.3 [INFO] [stderr] Downloaded libtest-mimic v0.5.2 [INFO] [stderr] Downloaded home v0.5.5 [INFO] [stderr] Downloaded pest_consume_macros v1.1.0 [INFO] [stderr] Downloaded pulldown-cmark v0.8.0 [INFO] [stderr] Downloaded colored-diff v0.2.3 [INFO] [stderr] Downloaded pest_meta v2.6.1 [INFO] [stderr] Downloaded annotate-snippets v0.9.1 [INFO] [stderr] Downloaded abnf v0.12.0 [INFO] [stderr] Downloaded pest_generator v2.6.1 [INFO] [stderr] Downloaded version-sync v0.9.4 [INFO] [stderr] Downloaded elsa v1.8.1 [INFO] [stderr] Downloaded minicbor v0.18.0 [INFO] [stderr] Downloaded abnf_to_pest v0.5.1 [INFO] [stderr] Downloaded abnf-core v0.5.0 [INFO] [stderr] Downloaded pretty v0.11.3 [INFO] [stderr] Downloaded pest_derive v2.6.1 [INFO] [stderr] Downloaded minicbor-derive v0.12.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8749e8bae6084272ec23a451fdadd3f52f7f7d75ecc6f440dc4d283b81bb4f5c [INFO] running `Command { std: "docker" "start" "-a" "8749e8bae6084272ec23a451fdadd3f52f7f7d75ecc6f440dc4d283b81bb4f5c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8749e8bae6084272ec23a451fdadd3f52f7f7d75ecc6f440dc4d283b81bb4f5c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8749e8bae6084272ec23a451fdadd3f52f7f7d75ecc6f440dc4d283b81bb4f5c", kill_on_drop: false }` [INFO] [stdout] 8749e8bae6084272ec23a451fdadd3f52f7f7d75ecc6f440dc4d283b81bb4f5c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2afc3650526707ff26f7c167cb5a23df8af6fd7b41b1993b6d18b3789283c7ab [INFO] running `Command { std: "docker" "start" "-a" "2afc3650526707ff26f7c167cb5a23df8af6fd7b41b1993b6d18b3789283c7ab", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.60 [INFO] [stderr] Compiling libc v0.2.146 [INFO] [stderr] Checking once_cell v1.18.0 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling futures-core v0.3.28 [INFO] [stderr] Compiling quote v1.0.28 [INFO] [stderr] Compiling openssl-sys v0.9.88 [INFO] [stderr] Compiling tokio v1.28.2 [INFO] [stderr] Compiling ucd-trie v0.1.5 [INFO] [stderr] Compiling generic-array v0.14.7 [INFO] [stderr] Compiling futures-util v0.3.28 [INFO] [stderr] Compiling minimal-lexical v0.2.1 [INFO] [stderr] Compiling openssl v0.10.54 [INFO] [stderr] Checking http v0.2.9 [INFO] [stderr] Compiling futures-channel v0.3.28 [INFO] [stderr] Checking futures-sink v0.3.28 [INFO] [stderr] Compiling log v0.4.19 [INFO] [stderr] Compiling unicode-segmentation v1.10.1 [INFO] [stderr] Checking tracing-core v0.1.31 [INFO] [stderr] Compiling nom v7.1.3 [INFO] [stderr] Compiling typed-arena v2.0.2 [INFO] [stderr] Compiling either v1.8.1 [INFO] [stderr] Checking try-lock v0.2.4 [INFO] [stderr] Compiling arrayvec v0.5.2 [INFO] [stderr] Checking want v0.3.1 [INFO] [stderr] Checking unicode-ident v1.0.9 [INFO] [stderr] Checking url v2.4.0 [INFO] [stderr] Compiling heck v0.4.1 [INFO] [stderr] Compiling itertools v0.10.5 [INFO] [stderr] Compiling minicbor v0.18.0 [INFO] [stderr] Checking tracing v0.1.37 [INFO] [stderr] Compiling pretty v0.11.3 [INFO] [stderr] Compiling native-tls v0.2.11 [INFO] [stderr] Checking os_str_bytes v6.5.1 [INFO] [stderr] Compiling pulldown-cmark v0.8.0 [INFO] [stderr] Compiling semver v1.0.17 [INFO] [stderr] Checking serde_urlencoded v0.7.1 [INFO] [stderr] Checking encoding_rs v0.8.32 [INFO] [stderr] Checking base64 v0.21.2 [INFO] [stderr] Checking cpufeatures v0.2.8 [INFO] [stderr] Checking http-body v0.4.5 [INFO] [stderr] Checking clap_lex v0.2.4 [INFO] [stderr] Checking ipnet v2.7.2 [INFO] [stderr] Checking block-buffer v0.10.4 [INFO] [stderr] Checking crypto-common v0.1.6 [INFO] [stderr] Checking regex-syntax v0.7.2 [INFO] [stderr] Checking mime v0.3.17 [INFO] [stderr] Checking textwrap v0.16.0 [INFO] [stderr] Checking digest v0.10.7 [INFO] [stderr] Checking half v1.8.2 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Compiling syn v2.0.18 [INFO] [stderr] Checking elsa v1.8.1 [INFO] [stderr] Checking sha2 v0.10.7 [INFO] [stderr] Checking annotate-snippets v0.9.1 [INFO] [stderr] Checking toml v0.5.11 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking home v0.5.5 [INFO] [stderr] Checking half v2.2.1 [INFO] [stderr] Checking dissimilar v1.0.6 [INFO] [stderr] Checking fs_extra v1.3.0 [INFO] [stderr] Checking colored-diff v0.2.3 [INFO] [stderr] Checking num_cpus v1.15.0 [INFO] [stderr] Checking mio v0.8.8 [INFO] [stderr] Checking socket2 v0.4.9 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Compiling abnf-core v0.5.0 [INFO] [stderr] Compiling abnf v0.12.0 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking threadpool v1.8.1 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Compiling abnf_to_pest v0.5.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking regex v1.8.4 [INFO] [stderr] Checking version-sync v0.9.4 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling pest_consume_macros v1.1.0 [INFO] [stderr] Compiling clap_derive v3.2.25 [INFO] [stderr] Compiling thiserror-impl v1.0.40 [INFO] [stderr] Compiling openssl-macros v0.1.1 [INFO] [stderr] Compiling thiserror v1.0.40 [INFO] [stderr] Checking tokio-util v0.7.8 [INFO] [stderr] Compiling pest v2.6.1 [INFO] [stderr] Checking h2 v0.3.19 [INFO] [stderr] Checking clap v3.2.25 [INFO] [stderr] Compiling pest_meta v2.6.1 [INFO] [stderr] Compiling pest_generator v2.6.1 [INFO] [stderr] Checking tokio-native-tls v0.3.1 [INFO] [stderr] Checking hyper v0.14.26 [INFO] [stderr] Compiling dhall v0.12.0 (/opt/rustwide/workdir) [INFO] [stderr] Compiling pest_derive v2.6.1 [INFO] [stderr] Checking libtest-mimic v0.5.2 [INFO] [stderr] Checking pest_consume v1.1.3 [INFO] [stderr] Checking hyper-tls v0.5.0 [INFO] [stderr] Checking reqwest v0.11.18 [INFO] [stdout] warning: ambiguous glob re-exports [INFO] [stdout] --> src/semantics/mod.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | pub use self::nze::*; [INFO] [stdout] | ^^^^^^^^^^^^ the name `env` in the type namespace is first re-exported here [INFO] [stdout] 6 | pub use self::resolve::*; [INFO] [stdout] 7 | pub use self::tck::*; [INFO] [stdout] | ------------ but the name `env` in the type namespace is also re-exported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ambiguous_glob_reexports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: ambiguous glob re-exports [INFO] [stdout] --> src/semantics/mod.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | pub use self::nze::*; [INFO] [stdout] | ^^^^^^^^^^^^ the name `env` in the type namespace is first re-exported here [INFO] [stdout] 6 | pub use self::resolve::*; [INFO] [stdout] 7 | pub use self::tck::*; [INFO] [stdout] | ------------ but the name `env` in the type namespace is also re-exported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ambiguous_glob_reexports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated module `pest::prec_climber`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:2:11 [INFO] [stdout] | [INFO] [stdout] 2 | use pest::prec_climber as pcl; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated struct `pest::prec_climber::PrecClimber`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:3:25 [INFO] [stdout] | [INFO] [stdout] 3 | use pest::prec_climber::PrecClimber; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated struct `pest::prec_climber::PrecClimber`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:113:29 [INFO] [stdout] | [INFO] [stdout] 113 | static ref PRECCLIMBER: PrecClimber = { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated struct `pest::prec_climber::PrecClimber`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:131:9 [INFO] [stdout] | [INFO] [stdout] 131 | PrecClimber::new( [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated struct `pest::prec_climber::Operator`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:134:32 [INFO] [stdout] | [INFO] [stdout] 134 | .map(|op| pcl::Operator::new(op, pcl::Assoc::Left)) [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated unit variant `pest::prec_climber::Assoc::Left`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:134:62 [INFO] [stdout] | [INFO] [stdout] 134 | .map(|op| pcl::Operator::new(op, pcl::Assoc::Left)) [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated module `pest::prec_climber`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:2:11 [INFO] [stdout] | [INFO] [stdout] 2 | use pest::prec_climber as pcl; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated struct `pest::prec_climber::PrecClimber`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:3:25 [INFO] [stdout] | [INFO] [stdout] 3 | use pest::prec_climber::PrecClimber; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated struct `pest::prec_climber::PrecClimber`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:113:29 [INFO] [stdout] | [INFO] [stdout] 113 | static ref PRECCLIMBER: PrecClimber = { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated struct `pest::prec_climber::PrecClimber`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:131:9 [INFO] [stdout] | [INFO] [stdout] 131 | PrecClimber::new( [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated struct `pest::prec_climber::Operator`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:134:32 [INFO] [stdout] | [INFO] [stdout] 134 | .map(|op| pcl::Operator::new(op, pcl::Assoc::Left)) [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated unit variant `pest::prec_climber::Assoc::Left`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:134:62 [INFO] [stdout] | [INFO] [stdout] 134 | .map(|op| pcl::Operator::new(op, pcl::Assoc::Left)) [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `pest::prec_climber::PrecClimber::::new`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:131:22 [INFO] [stdout] | [INFO] [stdout] 131 | PrecClimber::new( [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `pest::prec_climber::Operator::::new`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:134:42 [INFO] [stdout] | [INFO] [stdout] 134 | .map(|op| pcl::Operator::new(op, pcl::Assoc::Left)) [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `pest::prec_climber::PrecClimber::::new`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:131:22 [INFO] [stdout] | [INFO] [stdout] 131 | PrecClimber::new( [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `pest::prec_climber::Operator::::new`: Use `pest::pratt_parser` instead (it is an equivalent which also supports unary prefix/suffix operators). [INFO] [stdout] While prec_climber is going to be kept in 2.x minor and patch releases, it may be removed in a future major release. [INFO] [stdout] --> src/syntax/text/parser.rs:134:42 [INFO] [stdout] | [INFO] [stdout] 134 | .map(|op| pcl::Operator::new(op, pcl::Assoc::Left)) [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/error/builder.rs:125:9 [INFO] [stdout] | [INFO] [stdout] 125 | drop(self); // Get rid of the self reference so we don't use it by mistake. [INFO] [stdout] | ^^^^^----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut builder::ErrorBuilder` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/error/builder.rs:125:9 [INFO] [stdout] | [INFO] [stdout] 125 | drop(self); // Get rid of the self reference so we don't use it by mistake. [INFO] [stdout] | ^^^^^----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut builder::ErrorBuilder` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 17.24s [INFO] running `Command { std: "docker" "inspect" "2afc3650526707ff26f7c167cb5a23df8af6fd7b41b1993b6d18b3789283c7ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2afc3650526707ff26f7c167cb5a23df8af6fd7b41b1993b6d18b3789283c7ab", kill_on_drop: false }` [INFO] [stdout] 2afc3650526707ff26f7c167cb5a23df8af6fd7b41b1993b6d18b3789283c7ab