[INFO] fetching crate xdg-user 0.2.1...
[INFO] testing xdg-user-0.2.1 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate xdg-user 0.2.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate xdg-user 0.2.1 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xdg-user 0.2.1
[INFO] finished tweaking crates.io crate xdg-user 0.2.1
[INFO] tweaked toml for crates.io crate xdg-user 0.2.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate xdg-user 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c1fcffe535f23f351730adedc95b835d5b202a3dc0e60d0222d0333286c22b07
[INFO] running `Command { std: "docker" "start" "-a" "c1fcffe535f23f351730adedc95b835d5b202a3dc0e60d0222d0333286c22b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1fcffe535f23f351730adedc95b835d5b202a3dc0e60d0222d0333286c22b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1fcffe535f23f351730adedc95b835d5b202a3dc0e60d0222d0333286c22b07", kill_on_drop: false }`
[INFO] [stdout] c1fcffe535f23f351730adedc95b835d5b202a3dc0e60d0222d0333286c22b07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1516445baa8f73b4affffd0ed125b87f7eccd13e7aa11a20c232c305908bc4f9
[INFO] running `Command { std: "docker" "start" "-a" "1516445baa8f73b4affffd0ed125b87f7eccd13e7aa11a20c232c305908bc4f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling home v0.5.3
[INFO] [stderr]    Compiling xdg-user v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "1516445baa8f73b4affffd0ed125b87f7eccd13e7aa11a20c232c305908bc4f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1516445baa8f73b4affffd0ed125b87f7eccd13e7aa11a20c232c305908bc4f9", kill_on_drop: false }`
[INFO] [stdout] 1516445baa8f73b4affffd0ed125b87f7eccd13e7aa11a20c232c305908bc4f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da765696c73339179a7f4dcd9e3b004d1a7af0cf2cc3720a080aa2a1d21ea3df
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "da765696c73339179a7f4dcd9e3b004d1a7af0cf2cc3720a080aa2a1d21ea3df", kill_on_drop: false }`
[INFO] [stderr]    Compiling xdg-user v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "da765696c73339179a7f4dcd9e3b004d1a7af0cf2cc3720a080aa2a1d21ea3df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da765696c73339179a7f4dcd9e3b004d1a7af0cf2cc3720a080aa2a1d21ea3df", kill_on_drop: false }`
[INFO] [stdout] da765696c73339179a7f4dcd9e3b004d1a7af0cf2cc3720a080aa2a1d21ea3df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7431a7c4d6caba07e212ecf4adb0fabfb858993b88b7d70ea72f568f6c63558b
[INFO] running `Command { std: "docker" "start" "-a" "7431a7c4d6caba07e212ecf4adb0fabfb858993b88b7d70ea72f568f6c63558b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/xdg_user-cbd034f698e59a59)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests xdg-user
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 15) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 15) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:16:55
[INFO] [stdout]     |
[INFO] [stdout] 3   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_15_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 4   | | println!("Pictures folder: {:?}", xdg_user::pictures()?);
[INFO] [stdout]     | |                                                       ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 5   | | println!("Music folder:    {:?}", xdg_user::music()?);
[INFO] [stdout] 6   | |
[INFO] [stdout] ...   |
[INFO] [stdout] 9   | | println!("Downloads folder: {:?}", dirs.downloads());
[INFO] [stdout] 10  | | } _doctest_main_src_lib_rs_15_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Result<Infallible, xdg_user::Error>>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:17:52
[INFO] [stdout]     |
[INFO] [stdout] 3   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_15_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 4   | | println!("Pictures folder: {:?}", xdg_user::pictures()?);
[INFO] [stdout] 5   | | println!("Music folder:    {:?}", xdg_user::music()?);
[INFO] [stdout]     | |                                                    ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 6   | |
[INFO] [stdout] ...   |
[INFO] [stdout] 9   | | println!("Downloads folder: {:?}", dirs.downloads());
[INFO] [stdout] 10  | | } _doctest_main_src_lib_rs_15_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Result<Infallible, xdg_user::Error>>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:19:37
[INFO] [stdout]     |
[INFO] [stdout] 3   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_15_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 4   | | println!("Pictures folder: {:?}", xdg_user::pictures()?);
[INFO] [stdout] 5   | | println!("Music folder:    {:?}", xdg_user::music()?);
[INFO] [stdout] 6   | |
[INFO] [stdout] 7   | | let dirs = xdg_user::UserDirs::new()?;
[INFO] [stdout]     | |                                     ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 8   | | println!("Documents folder: {:?}", dirs.documents());
[INFO] [stdout] 9   | | println!("Downloads folder: {:?}", dirs.downloads());
[INFO] [stdout] 10  | | } _doctest_main_src_lib_rs_15_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Result<Infallible, xdg_user::Error>>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 15)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.17s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "7431a7c4d6caba07e212ecf4adb0fabfb858993b88b7d70ea72f568f6c63558b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7431a7c4d6caba07e212ecf4adb0fabfb858993b88b7d70ea72f568f6c63558b", kill_on_drop: false }`
[INFO] [stdout] 7431a7c4d6caba07e212ecf4adb0fabfb858993b88b7d70ea72f568f6c63558b
