[INFO] fetching crate serde_smb 0.1.1...
[INFO] checking serde_smb-0.1.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate serde_smb 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate serde_smb 0.1.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate serde_smb 0.1.1
[INFO] tweaked toml for crates.io crate serde_smb 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_smb 0.1.1 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]     Updating crates.io index
[INFO] [stderr]      Locking 67 packages to latest compatible versions
[INFO] [stderr]       Adding derive_more v0.99.20 (available: v2.0.1)
[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-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] 4f9e8e0b75805ec454438a61c4554a4f610503b5e309e73be05b0faa7915cc08
[INFO] running `Command { std: "docker" "start" "-a" "4f9e8e0b75805ec454438a61c4554a4f610503b5e309e73be05b0faa7915cc08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f9e8e0b75805ec454438a61c4554a4f610503b5e309e73be05b0faa7915cc08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f9e8e0b75805ec454438a61c4554a4f610503b5e309e73be05b0faa7915cc08", kill_on_drop: false }`
[INFO] [stdout] 4f9e8e0b75805ec454438a61c4554a4f610503b5e309e73be05b0faa7915cc08
[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] 6f39120839a2e8d6d91aa98f4204a9a59b5a182ae4fe1165d65a017cf44e8781
[INFO] running `Command { std: "docker" "start" "-a" "6f39120839a2e8d6d91aa98f4204a9a59b5a182ae4fe1165d65a017cf44e8781", kill_on_drop: false }`
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking countio v0.2.19
[INFO] [stderr]    Compiling modular-bitfield-impl v0.11.2
[INFO] [stderr]     Checking modular-bitfield v0.11.2
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling derive_more v0.99.20
[INFO] [stderr]    Compiling serde_dis v0.1.3
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling serde_smb_derive v0.1.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking bitflags_serde_shim v0.2.5
[INFO] [stderr]     Checking serde_smb v0.1.1
[INFO] [stderr]     Checking serde_smb v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking smb3 v0.1.1
[INFO] [stdout] error: this type will no longer be must used: Result<u16, Infallible>
[INFO] [stdout]    --> tests/integration_test.rs:273:10
[INFO] [stdout]     |
[INFO] [stdout] 273 | #[derive(SerializeSmbEnum, DeserializeSmbEnum, Clone, Debug, PartialEq)]
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the derive macro `SerializeSmbEnum` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde_smb` (test "integration_test") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "6f39120839a2e8d6d91aa98f4204a9a59b5a182ae4fe1165d65a017cf44e8781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f39120839a2e8d6d91aa98f4204a9a59b5a182ae4fe1165d65a017cf44e8781", kill_on_drop: false }`
[INFO] [stdout] 6f39120839a2e8d6d91aa98f4204a9a59b5a182ae4fe1165d65a017cf44e8781