[INFO] fetching crate vouch-lib 0.3.1...
[INFO] checking vouch-lib-0.3.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate vouch-lib 0.3.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate vouch-lib 0.3.1
[INFO] finished tweaking crates.io crate vouch-lib 0.3.1
[INFO] tweaked toml for crates.io crate vouch-lib 0.3.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vouch-lib 0.3.1 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 79 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.8.4 (available: v0.11.8)
[INFO] [stderr]       Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dffa031e112d6b3d3982f3a2638862a2256c6dcbe4a1aa9428a711f1dad63695
[INFO] running `Command { std: "docker" "start" "-a" "dffa031e112d6b3d3982f3a2638862a2256c6dcbe4a1aa9428a711f1dad63695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dffa031e112d6b3d3982f3a2638862a2256c6dcbe4a1aa9428a711f1dad63695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dffa031e112d6b3d3982f3a2638862a2256c6dcbe4a1aa9428a711f1dad63695", kill_on_drop: false }`
[INFO] [stdout] dffa031e112d6b3d3982f3a2638862a2256c6dcbe4a1aa9428a711f1dad63695
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7020f3600eeb257e7996be5eb4d1f1f05e14e48986446ad7171eaa3daa489b98
[INFO] running `Command { std: "docker" "start" "-a" "7020f3600eeb257e7996be5eb4d1f1f05e14e48986446ad7171eaa3daa489b98", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]     Checking writeable v0.6.2
[INFO] [stderr]     Checking litemap v0.8.1
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling icu_properties_data v2.1.1
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling icu_normalizer_data v2.1.1
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking ryu v1.0.20
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking utf8_iter v1.0.4
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking humantime v2.3.0
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking itoa v1.0.15
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking log v0.4.28
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.1
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking zerotrie v0.2.3
[INFO] [stderr]     Checking zerovec v0.11.5
[INFO] [stderr]     Checking tinystr v0.8.2
[INFO] [stderr]     Checking potential_utf v0.1.4
[INFO] [stderr]     Checking icu_collections v2.1.1
[INFO] [stderr]     Checking icu_locale_core v2.1.1
[INFO] [stderr]     Checking icu_provider v2.1.1
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking icu_properties v2.1.1
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking vouch-lib v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/extension/commands/identify_local_dependencies.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     /// Working directory.
[INFO] [stdout] 13 | |     #[structopt(name = "working-directory")]
[INFO] [stdout] 14 | |     pub working_directory: String,
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/extension/commands/registries_package_metadata.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     /// Package name.
[INFO] [stdout] 13 | |     #[structopt(name = "package-name")]
[INFO] [stdout] 14 | |     pub package_name: String,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/extension/commands/registries_package_metadata.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     /// Package version.
[INFO] [stdout] 17 | |     #[structopt(name = "package-version")]
[INFO] [stdout] 18 | |     pub package_version: Option<String>,
[INFO] [stdout]    | |_______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/extension/process.rs:86:38
[INFO] [stdout]    |
[INFO] [stdout] 86 |             args.push(package_version.clone());
[INFO] [stdout]    |                                      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/extension/commands/identify_local_dependencies.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     /// Working directory.
[INFO] [stdout] 13 | |     #[structopt(name = "working-directory")]
[INFO] [stdout] 14 | |     pub working_directory: String,
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/extension/commands/registries_package_metadata.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     /// Package name.
[INFO] [stdout] 13 | |     #[structopt(name = "package-name")]
[INFO] [stdout] 14 | |     pub package_name: String,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/extension/commands/registries_package_metadata.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     /// Package version.
[INFO] [stdout] 17 | |     #[structopt(name = "package-version")]
[INFO] [stdout] 18 | |     pub package_version: Option<String>,
[INFO] [stdout]    | |_______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/extension/process.rs:86:38
[INFO] [stdout]    |
[INFO] [stdout] 86 |             args.push(package_version.clone());
[INFO] [stdout]    |                                      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vouch-lib` (lib) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `vouch-lib` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "7020f3600eeb257e7996be5eb4d1f1f05e14e48986446ad7171eaa3daa489b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7020f3600eeb257e7996be5eb4d1f1f05e14e48986446ad7171eaa3daa489b98", kill_on_drop: false }`
[INFO] [stdout] 7020f3600eeb257e7996be5eb4d1f1f05e14e48986446ad7171eaa3daa489b98
