[INFO] fetching crate securestore 0.100.0...
[INFO] checking securestore-0.100.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate securestore 0.100.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate securestore 0.100.0
[INFO] finished tweaking crates.io crate securestore 0.100.0
[INFO] tweaked toml for crates.io crate securestore 0.100.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate securestore 0.100.0 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] [stderr]       Adding base64 v0.13.1 (available: v0.22.1)
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] dd8e089c91bfa7e743fc258b2255b0a859fe11c7c6d4a1b335000dffce0f7dbe
[INFO] running `Command { std: "docker" "start" "-a" "dd8e089c91bfa7e743fc258b2255b0a859fe11c7c6d4a1b335000dffce0f7dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd8e089c91bfa7e743fc258b2255b0a859fe11c7c6d4a1b335000dffce0f7dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd8e089c91bfa7e743fc258b2255b0a859fe11c7c6d4a1b335000dffce0f7dbe", kill_on_drop: false }`
[INFO] [stdout] dd8e089c91bfa7e743fc258b2255b0a859fe11c7c6d4a1b335000dffce0f7dbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 16b7f80808f2695235c0677045405312e0fb9f0e2e2610591b1eda3528e62a94
[INFO] running `Command { std: "docker" "start" "-a" "16b7f80808f2695235c0677045405312e0fb9f0e2e2610591b1eda3528e62a94", kill_on_drop: false }`
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking openssl v0.10.75
[INFO] [stderr]     Checking securestore v0.100.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/serial.rs:75:65
[INFO] [stdout]    |
[INFO] [stdout] 75 |       fn deserialize(bytes: Vec<u8>) -> Result<Self, Self::Error> {
[INFO] [stdout]    |  _________________________________________________________________^
[INFO] [stdout] 76 | |         Ok(bytes)
[INFO] [stdout] 77 | |     }
[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<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/serial.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Ok(bytes)
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `securestore` (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<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/serial.rs:75:65
[INFO] [stdout]    |
[INFO] [stdout] 75 |       fn deserialize(bytes: Vec<u8>) -> Result<Self, Self::Error> {
[INFO] [stdout]    |  _________________________________________________________________^
[INFO] [stdout] 76 | |         Ok(bytes)
[INFO] [stdout] 77 | |     }
[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<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/serial.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Ok(bytes)
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `securestore` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "16b7f80808f2695235c0677045405312e0fb9f0e2e2610591b1eda3528e62a94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16b7f80808f2695235c0677045405312e0fb9f0e2e2610591b1eda3528e62a94", kill_on_drop: false }`
[INFO] [stdout] 16b7f80808f2695235c0677045405312e0fb9f0e2e2610591b1eda3528e62a94