[INFO] fetching crate figment_file_env_provider 0.2.0...
[INFO] checking figment_file_env_provider-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate figment_file_env_provider 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate figment_file_env_provider 0.2.0
[INFO] finished tweaking crates.io crate figment_file_env_provider 0.2.0
[INFO] tweaked toml for crates.io crate figment_file_env_provider 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate figment_file_env_provider 0.2.0 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]     Updating crates.io index
[INFO] [stderr]      Locking 38 packages to latest compatible versions
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b61a144af759cd6d7acd9cd08aa6520fa4155b2312cf03be61fa3b3585282cd2
[INFO] running `Command { std: "docker" "start" "-a" "b61a144af759cd6d7acd9cd08aa6520fa4155b2312cf03be61fa3b3585282cd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b61a144af759cd6d7acd9cd08aa6520fa4155b2312cf03be61fa3b3585282cd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b61a144af759cd6d7acd9cd08aa6520fa4155b2312cf03be61fa3b3585282cd2", kill_on_drop: false }`
[INFO] [stdout] b61a144af759cd6d7acd9cd08aa6520fa4155b2312cf03be61fa3b3585282cd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ae18ea0917adedb7086efedfc4a23891da1a6133e674d03b7fae000d1d264f10
[INFO] running `Command { std: "docker" "start" "-a" "ae18ea0917adedb7086efedfc4a23891da1a6133e674d03b7fae000d1d264f10", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling uncased v0.9.10
[INFO] [stderr]    Compiling figment v0.10.19
[INFO] [stderr]     Checking inlinable_string v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling pear_codegen v0.2.9
[INFO] [stderr]     Checking pear v0.2.9
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking figment_file_env_provider v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Value, Infallible>
[INFO] [stdout]    --> src/lib.rs:314:25
[INFO] [stdout]     |
[INFO] [stdout] 314 |                         contents.parse().expect("infallible"),
[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<Value, Infallible>
[INFO] [stdout]    --> src/lib.rs:326:42
[INFO] [stdout]     |
[INFO] [stdout] 326 |             dict.insert(key.to_string(), value.parse().expect("infallible"));
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `figment_file_env_provider` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Value, Infallible>
[INFO] [stdout]    --> src/lib.rs:314:25
[INFO] [stdout]     |
[INFO] [stdout] 314 |                         contents.parse().expect("infallible"),
[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<Value, Infallible>
[INFO] [stdout]    --> src/lib.rs:326:42
[INFO] [stdout]     |
[INFO] [stdout] 326 |             dict.insert(key.to_string(), value.parse().expect("infallible"));
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `figment_file_env_provider` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ae18ea0917adedb7086efedfc4a23891da1a6133e674d03b7fae000d1d264f10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae18ea0917adedb7086efedfc4a23891da1a6133e674d03b7fae000d1d264f10", kill_on_drop: false }`
[INFO] [stdout] ae18ea0917adedb7086efedfc4a23891da1a6133e674d03b7fae000d1d264f10