[INFO] fetching crate sheesy-vault 4.0.11...
[INFO] checking sheesy-vault-4.0.11 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate sheesy-vault 4.0.11 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate sheesy-vault 4.0.11 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sheesy-vault 4.0.11
[INFO] finished tweaking crates.io crate sheesy-vault 4.0.11
[INFO] tweaked toml for crates.io crate sheesy-vault 4.0.11 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 53 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding gpg-error v0.4.1 (latest: v0.6.0)
[INFO] [stderr]       Adding gpgme v0.8.0 (latest: v0.11.0)
[INFO] [stderr]       Adding gpgme-sys v0.8.0 (latest: v0.11.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.9.0 (latest: v0.12.1)
[INFO] [stderr]       Adding libgpg-error-sys v0.4.1 (latest: v0.6.0)
[INFO] [stderr]       Adding mktemp v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding serde_yaml v0.8.26 (latest: v0.9.34+deprecated)
[INFO] [stderr]       Adding smallvec v0.6.14 (latest: v1.13.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding uuid v0.8.2 (latest: v1.8.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mktemp v0.4.1
[INFO] [stderr]   Downloaded cstr-argument v0.1.2
[INFO] [stderr]   Downloaded gpg-error v0.4.1
[INFO] [stderr]   Downloaded gpgme v0.8.0
[INFO] [stderr]   Downloaded libgpg-error-sys v0.4.1
[INFO] [stderr]   Downloaded gpgme-sys v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8341d121d8fdd4ab9feb7bef02d63852dcadc44bf4f46c65c712ba9bcc8d35ee
[INFO] running `Command { std: "docker" "start" "-a" "8341d121d8fdd4ab9feb7bef02d63852dcadc44bf4f46c65c712ba9bcc8d35ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8341d121d8fdd4ab9feb7bef02d63852dcadc44bf4f46c65c712ba9bcc8d35ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8341d121d8fdd4ab9feb7bef02d63852dcadc44bf4f46c65c712ba9bcc8d35ee", kill_on_drop: false }`
[INFO] [stdout] 8341d121d8fdd4ab9feb7bef02d63852dcadc44bf4f46c65c712ba9bcc8d35ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03a6b916274d88ab28e7167b9830213f5ca473ddfaf05cb3042e0dab7c28ca59
[INFO] running `Command { std: "docker" "start" "-a" "03a6b916274d88ab28e7167b9830213f5ca473ddfaf05cb3042e0dab7c28ca59", kill_on_drop: false }`
[INFO] [stderr]    Compiling libgpg-error-sys v0.4.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling gpgme-sys v0.8.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling gpg-error v0.4.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]    Compiling gpgme v0.8.0
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking cstr-argument v0.1.2
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking mktemp v0.4.1
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking sheesy-vault v4.0.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/base.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/base.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use serde_yaml;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/error.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use failure;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate failure;
[INFO] [stdout]   | --------------------- the item `failure` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/error.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/error.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use serde_yaml;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]   --> src/recipients/util.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | use gpgme::{self, Key};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | extern crate gpgme;
[INFO] [stdout]    | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]   --> src/resource.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use gpgme;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | extern crate gpgme;
[INFO] [stdout]    | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `atty` is imported redundantly
[INFO] [stdout]  --> src/spec.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use atty;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate atty;
[INFO] [stdout]   | ------------------ the item `atty` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/util.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use failure::{self, err_msg, Error, ResultExt};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate failure;
[INFO] [stdout]   | --------------------- the item `failure` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/util.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/base.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/base.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use serde_yaml;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/error.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use failure;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate failure;
[INFO] [stdout]   | --------------------- the item `failure` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/error.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/error.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use serde_yaml;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]   --> src/recipients/util.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | use gpgme::{self, Key};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | extern crate gpgme;
[INFO] [stdout]    | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]   --> src/resource.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use gpgme;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | extern crate gpgme;
[INFO] [stdout]    | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `atty` is imported redundantly
[INFO] [stdout]  --> src/spec.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use atty;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate atty;
[INFO] [stdout]   | ------------------ the item `atty` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/util.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use failure::{self, err_msg, Error, ResultExt};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate failure;
[INFO] [stdout]   | --------------------- the item `failure` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/util.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `failure::Fail::causes`: please use the 'iter_chain()' method instead
[INFO] [stdout]    --> src/error.rs:176:14
[INFO] [stdout]     |
[INFO] [stdout] 176 |         self.causes().filter_map(|c| c.downcast_ref::<T>()).next()
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `failure::Fail::causes`: please use the 'iter_chain()' method instead
[INFO] [stdout]    --> src/error.rs:176:14
[INFO] [stdout]     |
[INFO] [stdout] 176 |         self.causes().filter_map(|c| c.downcast_ref::<T>()).next()
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/resource.rs:197:25
[INFO] [stdout]     |
[INFO] [stdout] 197 | /                         mem::replace(
[INFO] [stdout] 198 | |                             none,
[INFO] [stdout] 199 | |                             Some((
[INFO] [stdout] 200 | |                                 partition.secrets_path(),
[INFO] [stdout] ...   |
[INFO] [stdout] 206 | |                             )),
[INFO] [stdout] 207 | |                         );
[INFO] [stdout]     | |_________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 197 |                         let _ = mem::replace(
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/resource.rs:197:25
[INFO] [stdout]     |
[INFO] [stdout] 197 | /                         mem::replace(
[INFO] [stdout] 198 | |                             none,
[INFO] [stdout] 199 | |                             Some((
[INFO] [stdout] 200 | |                                 partition.secrets_path(),
[INFO] [stdout] ...   |
[INFO] [stdout] 206 | |                             )),
[INFO] [stdout] 207 | |                         );
[INFO] [stdout]     | |_________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 197 |                         let _ = mem::replace(
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.65s
[INFO] running `Command { std: "docker" "inspect" "03a6b916274d88ab28e7167b9830213f5ca473ddfaf05cb3042e0dab7c28ca59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03a6b916274d88ab28e7167b9830213f5ca473ddfaf05cb3042e0dab7c28ca59", kill_on_drop: false }`
[INFO] [stdout] 03a6b916274d88ab28e7167b9830213f5ca473ddfaf05cb3042e0dab7c28ca59
[INFO] checking sheesy-vault-4.0.11 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate sheesy-vault 4.0.11 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate sheesy-vault 4.0.11 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sheesy-vault 4.0.11
[INFO] finished tweaking crates.io crate sheesy-vault 4.0.11
[INFO] tweaked toml for crates.io crate sheesy-vault 4.0.11 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 53 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding gpg-error v0.4.1 (latest: v0.6.0)
[INFO] [stderr]       Adding gpgme v0.8.0 (latest: v0.11.0)
[INFO] [stderr]       Adding gpgme-sys v0.8.0 (latest: v0.11.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.9.0 (latest: v0.12.1)
[INFO] [stderr]       Adding libgpg-error-sys v0.4.1 (latest: v0.6.0)
[INFO] [stderr]       Adding mktemp v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding serde_yaml v0.8.26 (latest: v0.9.34+deprecated)
[INFO] [stderr]       Adding smallvec v0.6.14 (latest: v1.13.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding uuid v0.8.2 (latest: v1.8.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ff0d568b5c8779e9810e9f9460037f3292dd34f13bb4c3454e38a9f26f8694a
[INFO] running `Command { std: "docker" "start" "-a" "9ff0d568b5c8779e9810e9f9460037f3292dd34f13bb4c3454e38a9f26f8694a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ff0d568b5c8779e9810e9f9460037f3292dd34f13bb4c3454e38a9f26f8694a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ff0d568b5c8779e9810e9f9460037f3292dd34f13bb4c3454e38a9f26f8694a", kill_on_drop: false }`
[INFO] [stdout] 9ff0d568b5c8779e9810e9f9460037f3292dd34f13bb4c3454e38a9f26f8694a
[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" "-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 249243e39d1fd9d3fa314f918a98d967be7d83a62c6835646b9da38b65ea59f4
[INFO] running `Command { std: "docker" "start" "-a" "249243e39d1fd9d3fa314f918a98d967be7d83a62c6835646b9da38b65ea59f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libgpg-error-sys v0.4.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling gpgme-sys v0.8.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling gpg-error v0.4.1
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]    Compiling gpgme v0.8.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking cstr-argument v0.1.2
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking mktemp v0.4.1
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking sheesy-vault v4.0.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/base.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/base.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use serde_yaml;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/error.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use failure;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate failure;
[INFO] [stdout]   | --------------------- the item `failure` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/error.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/error.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use serde_yaml;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]   --> src/recipients/util.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | use gpgme::{self, Key};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | extern crate gpgme;
[INFO] [stdout]    | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]   --> src/resource.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use gpgme;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | extern crate gpgme;
[INFO] [stdout]    | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `atty` is imported redundantly
[INFO] [stdout]  --> src/spec.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use atty;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate atty;
[INFO] [stdout]   | ------------------ the item `atty` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/util.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use failure::{self, err_msg, Error, ResultExt};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate failure;
[INFO] [stdout]   | --------------------- the item `failure` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/util.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/base.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/base.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use serde_yaml;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/error.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use failure;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate failure;
[INFO] [stdout]   | --------------------- the item `failure` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/error.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/error.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use serde_yaml;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]   --> src/recipients/util.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | use gpgme::{self, Key};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | extern crate gpgme;
[INFO] [stdout]    | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]   --> src/resource.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use gpgme;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | extern crate gpgme;
[INFO] [stdout]    | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `atty` is imported redundantly
[INFO] [stdout]  --> src/spec.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use atty;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate atty;
[INFO] [stdout]   | ------------------ the item `atty` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/util.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use failure::{self, err_msg, Error, ResultExt};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate failure;
[INFO] [stdout]   | --------------------- the item `failure` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gpgme` is imported redundantly
[INFO] [stdout]  --> src/util.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use gpgme;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate gpgme;
[INFO] [stdout]   | ------------------- the item `gpgme` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `failure::Fail::causes`: please use the 'iter_chain()' method instead
[INFO] [stdout]    --> src/error.rs:176:14
[INFO] [stdout]     |
[INFO] [stdout] 176 |         self.causes().filter_map(|c| c.downcast_ref::<T>()).next()
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `failure::Fail::causes`: please use the 'iter_chain()' method instead
[INFO] [stdout]    --> src/error.rs:176:14
[INFO] [stdout]     |
[INFO] [stdout] 176 |         self.causes().filter_map(|c| c.downcast_ref::<T>()).next()
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/resource.rs:197:25
[INFO] [stdout]     |
[INFO] [stdout] 197 | /                         mem::replace(
[INFO] [stdout] 198 | |                             none,
[INFO] [stdout] 199 | |                             Some((
[INFO] [stdout] 200 | |                                 partition.secrets_path(),
[INFO] [stdout] ...   |
[INFO] [stdout] 206 | |                             )),
[INFO] [stdout] 207 | |                         );
[INFO] [stdout]     | |_________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 197 |                         let _ = mem::replace(
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/resource.rs:197:25
[INFO] [stdout]     |
[INFO] [stdout] 197 | /                         mem::replace(
[INFO] [stdout] 198 | |                             none,
[INFO] [stdout] 199 | |                             Some((
[INFO] [stdout] 200 | |                                 partition.secrets_path(),
[INFO] [stdout] ...   |
[INFO] [stdout] 206 | |                             )),
[INFO] [stdout] 207 | |                         );
[INFO] [stdout]     | |_________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 197 |                         let _ = mem::replace(
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.46s
[INFO] running `Command { std: "docker" "inspect" "249243e39d1fd9d3fa314f918a98d967be7d83a62c6835646b9da38b65ea59f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "249243e39d1fd9d3fa314f918a98d967be7d83a62c6835646b9da38b65ea59f4", kill_on_drop: false }`
[INFO] [stdout] 249243e39d1fd9d3fa314f918a98d967be7d83a62c6835646b9da38b65ea59f4