[INFO] fetching crate macro_keeper 0.0.1...
[INFO] checking macro_keeper-0.0.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate macro_keeper 0.0.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate macro_keeper 0.0.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate macro_keeper 0.0.1
[INFO] tweaked toml for crates.io crate macro_keeper 0.0.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate macro_keeper 0.0.1 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] crate crates.io crate macro_keeper 0.0.1 already has a lockfile, it will not be regenerated
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ad497b93cec10228dd3943f1717acd00c5ddbad5fd006d9cfb39960f3b0f235c
[INFO] running `Command { std: "docker" "start" "-a" "ad497b93cec10228dd3943f1717acd00c5ddbad5fd006d9cfb39960f3b0f235c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad497b93cec10228dd3943f1717acd00c5ddbad5fd006d9cfb39960f3b0f235c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad497b93cec10228dd3943f1717acd00c5ddbad5fd006d9cfb39960f3b0f235c", kill_on_drop: false }`
[INFO] [stdout] ad497b93cec10228dd3943f1717acd00c5ddbad5fd006d9cfb39960f3b0f235c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 388d6f48a29f99405cf6df201380816ce08cf107523f49b9e24800638ce2f3a2
[INFO] running `Command { std: "docker" "start" "-a" "388d6f48a29f99405cf6df201380816ce08cf107523f49b9e24800638ce2f3a2", kill_on_drop: false }`
[INFO] [stderr]     Checking macro_keeper v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> tests/config_test.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | / config_generator!(
[INFO] [stdout] 27 | |     AppConfig,
[INFO] [stdout] 28 | |     CONFIG,
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | | );
[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 `$crate::__config_field` which comes from the expansion of the macro `config_generator` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> tests/config_test.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | /         config_generator!(
[INFO] [stdout] 43 | |             AppConfigTest1,
[INFO] [stdout] 44 | |             CONFIG_TEST_1,
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__config_field` which comes from the expansion of the macro `config_generator` (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<String, Infallible>
[INFO] [stdout]   --> tests/config_test.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 | /         config_generator!(
[INFO] [stdout] 65 | |             AppConfigTest2,
[INFO] [stdout] 66 | |             CONFIG_TEST_2,
[INFO] [stdout] ...  |
[INFO] [stdout] 72 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__config_field` which comes from the expansion of the macro `config_generator` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> tests/config_test.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 | /         config_generator!(
[INFO] [stdout] 83 | |             AppConfigTest2,
[INFO] [stdout] 84 | |             CONFIG_TEST_2,
[INFO] [stdout] ...  |
[INFO] [stdout] 90 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__config_field` which comes from the expansion of the macro `config_generator` (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<String, Infallible>
[INFO] [stdout]    --> tests/config_test.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 | /         config_generator!(
[INFO] [stdout] 101 | |             AppConfigTest6,
[INFO] [stdout] 102 | |             CONFIG_TEST_6,
[INFO] [stdout] ...   |
[INFO] [stdout] 108 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::__config_field` which comes from the expansion of the macro `config_generator` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> tests/config_test.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 | /         config_generator!(
[INFO] [stdout] 125 | |             AppConfigTest3,
[INFO] [stdout] 126 | |             CONFIG_TEST_3,
[INFO] [stdout] ...   |
[INFO] [stdout] 132 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::__config_field` which comes from the expansion of the macro `config_generator` (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<String, Infallible>
[INFO] [stdout]    --> tests/config_test.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 | /         config_generator!(
[INFO] [stdout] 145 | |             AppConfigTest4,
[INFO] [stdout] 146 | |             CONFIG_TEST_4,
[INFO] [stdout] ...   |
[INFO] [stdout] 152 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::__config_field` which comes from the expansion of the macro `config_generator` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> tests/config_test.rs:171:9
[INFO] [stdout]     |
[INFO] [stdout] 171 | /         config_generator!(
[INFO] [stdout] 172 | |             AppConfigTest5,
[INFO] [stdout] 173 | |             CONFIG_TEST_5,
[INFO] [stdout] ...   |
[INFO] [stdout] 179 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::__config_field` which comes from the expansion of the macro `config_generator` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `macro_keeper` (test "config_test") due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "388d6f48a29f99405cf6df201380816ce08cf107523f49b9e24800638ce2f3a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "388d6f48a29f99405cf6df201380816ce08cf107523f49b9e24800638ce2f3a2", kill_on_drop: false }`
[INFO] [stdout] 388d6f48a29f99405cf6df201380816ce08cf107523f49b9e24800638ce2f3a2