[INFO] fetching crate validated-slice 0.2.0...
[INFO] checking validated-slice-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate validated-slice 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate validated-slice 0.2.0
[INFO] finished tweaking crates.io crate validated-slice 0.2.0
[INFO] tweaked toml for crates.io crate validated-slice 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate validated-slice 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] 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] 4cae2ed5d093ee424955235b4224b2819f41050bc229876853c2ed59f5a282d7
[INFO] running `Command { std: "docker" "start" "-a" "4cae2ed5d093ee424955235b4224b2819f41050bc229876853c2ed59f5a282d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cae2ed5d093ee424955235b4224b2819f41050bc229876853c2ed59f5a282d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cae2ed5d093ee424955235b4224b2819f41050bc229876853c2ed59f5a282d7", kill_on_drop: false }`
[INFO] [stdout] 4cae2ed5d093ee424955235b4224b2819f41050bc229876853c2ed59f5a282d7
[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] daa238365ea997c85f791ae36cc4597a5e78da3394ec6b06534a746eba9672f6
[INFO] running `Command { std: "docker" "start" "-a" "daa238365ea997c85f791ae36cc4597a5e78da3394ec6b06534a746eba9672f6", kill_on_drop: false }`
[INFO] [stderr]     Checking validated-slice v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PlainBoxStr, Infallible>
[INFO] [stdout]    --> tests/plain_str.rs:161:1
[INFO] [stdout]     |
[INFO] [stdout] 161 | / validated_slice::impl_std_traits_for_owned_slice! {
[INFO] [stdout] 162 | |     Spec {
[INFO] [stdout] 163 | |         spec: PlainBoxStrSpec,
[INFO] [stdout] 164 | |         custom: PlainBoxStr,
[INFO] [stdout] ...   |
[INFO] [stdout] 215 | |     { FromStr };
[INFO] [stdout] 216 | | }
[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 macro `$crate::impl_std_traits_for_owned_slice` which comes from the expansion of the macro `validated_slice::impl_std_traits_for_owned_slice` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PlainBoxStr, Infallible>
[INFO] [stdout]    --> tests/plain_str.rs:161:1
[INFO] [stdout]     |
[INFO] [stdout] 161 | / validated_slice::impl_std_traits_for_owned_slice! {
[INFO] [stdout] 162 | |     Spec {
[INFO] [stdout] 163 | |         spec: PlainBoxStrSpec,
[INFO] [stdout] 164 | |         custom: PlainBoxStr,
[INFO] [stdout] ...   |
[INFO] [stdout] 215 | |     { FromStr };
[INFO] [stdout] 216 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::impl_std_traits_for_owned_slice` which comes from the expansion of the macro `validated_slice::impl_std_traits_for_owned_slice` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PlainBoxStr, Infallible>
[INFO] [stdout]    --> tests/plain_str.rs:161:1
[INFO] [stdout]     |
[INFO] [stdout] 161 | / validated_slice::impl_std_traits_for_owned_slice! {
[INFO] [stdout] 162 | |     Spec {
[INFO] [stdout] 163 | |         spec: PlainBoxStrSpec,
[INFO] [stdout] 164 | |         custom: PlainBoxStr,
[INFO] [stdout] ...   |
[INFO] [stdout] 215 | |     { FromStr };
[INFO] [stdout] 216 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::impl_std_traits_for_owned_slice` which comes from the expansion of the macro `validated_slice::impl_std_traits_for_owned_slice` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PlainString, Infallible>
[INFO] [stdout]    --> tests/plain_str.rs:294:1
[INFO] [stdout]     |
[INFO] [stdout] 294 | / validated_slice::impl_std_traits_for_owned_slice! {
[INFO] [stdout] 295 | |     Spec {
[INFO] [stdout] 296 | |         spec: PlainStringSpec,
[INFO] [stdout] 297 | |         custom: PlainString,
[INFO] [stdout] ...   |
[INFO] [stdout] 346 | |     { FromStr };
[INFO] [stdout] 347 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::impl_std_traits_for_owned_slice` which comes from the expansion of the macro `validated_slice::impl_std_traits_for_owned_slice` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PlainString, Infallible>
[INFO] [stdout]    --> tests/plain_str.rs:294:1
[INFO] [stdout]     |
[INFO] [stdout] 294 | / validated_slice::impl_std_traits_for_owned_slice! {
[INFO] [stdout] 295 | |     Spec {
[INFO] [stdout] 296 | |         spec: PlainStringSpec,
[INFO] [stdout] 297 | |         custom: PlainString,
[INFO] [stdout] ...   |
[INFO] [stdout] 346 | |     { FromStr };
[INFO] [stdout] 347 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::impl_std_traits_for_owned_slice` which comes from the expansion of the macro `validated_slice::impl_std_traits_for_owned_slice` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PlainString, Infallible>
[INFO] [stdout]    --> tests/plain_str.rs:294:1
[INFO] [stdout]     |
[INFO] [stdout] 294 | / validated_slice::impl_std_traits_for_owned_slice! {
[INFO] [stdout] 295 | |     Spec {
[INFO] [stdout] 296 | |         spec: PlainStringSpec,
[INFO] [stdout] 297 | |         custom: PlainString,
[INFO] [stdout] ...   |
[INFO] [stdout] 346 | |     { FromStr };
[INFO] [stdout] 347 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::impl_std_traits_for_owned_slice` which comes from the expansion of the macro `validated_slice::impl_std_traits_for_owned_slice` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `validated-slice` (test "plain_str") due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "daa238365ea997c85f791ae36cc4597a5e78da3394ec6b06534a746eba9672f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daa238365ea997c85f791ae36cc4597a5e78da3394ec6b06534a746eba9672f6", kill_on_drop: false }`
[INFO] [stdout] daa238365ea997c85f791ae36cc4597a5e78da3394ec6b06534a746eba9672f6