[INFO] fetching crate dochy_archiver 0.7.1...
[INFO] testing dochy_archiver-0.7.1 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] extracting crate dochy_archiver 0.7.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate dochy_archiver 0.7.1 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dochy_archiver 0.7.1
[INFO] finished tweaking crates.io crate dochy_archiver 0.7.1
[INFO] tweaked toml for crates.io crate dochy_archiver 0.7.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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] 0081779329b5f34a887be8b685967ab64aca954f97fc335d27e2b8cef0698e35
[INFO] running `Command { std: "docker" "start" "-a" "0081779329b5f34a887be8b685967ab64aca954f97fc335d27e2b8cef0698e35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0081779329b5f34a887be8b685967ab64aca954f97fc335d27e2b8cef0698e35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0081779329b5f34a887be8b685967ab64aca954f97fc335d27e2b8cef0698e35", kill_on_drop: false }`
[INFO] [stdout] 0081779329b5f34a887be8b685967ab64aca954f97fc335d27e2b8cef0698e35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b75e45e7fe9836281130831e3bb42b39809cce1d82cf76b7c19257d5aecb680
[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" "6b75e45e7fe9836281130831e3bb42b39809cce1d82cf76b7c19257d5aecb680", kill_on_drop: false }`
[INFO] [stderr]    Compiling snap v1.0.5
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling with_capacity_safe v0.3.0
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling metrohash v1.0.6
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling dochy_compaction v0.7.1
[INFO] [stderr]    Compiling dochy_archiver v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/imp/structs/metadata.rs:45:27
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     pub(crate) fn from_bytes(bytes : &mut impl Read) -> ArcResult<(Metadata, usize)>{
[INFO] [stdout] 43 | |         let (vec, bytes_read) = decode(bytes)?;
[INFO] [stdout] 44 | |         let mut i = vec.iter();
[INFO] [stdout] 45 | |         let len = i.next()?.as_i64()? as usize;
[INFO] [stdout]    | |                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |         Ok((Metadata::new(r), bytes_read))
[INFO] [stdout] 57 | |     }
[INFO] [stdout]    | |_____- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/imp/structs/metadata.rs:45:37
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     pub(crate) fn from_bytes(bytes : &mut impl Read) -> ArcResult<(Metadata, usize)>{
[INFO] [stdout] 43 | |         let (vec, bytes_read) = decode(bytes)?;
[INFO] [stdout] 44 | |         let mut i = vec.iter();
[INFO] [stdout] 45 | |         let len = i.next()?.as_i64()? as usize;
[INFO] [stdout]    | |                                     ^ use `.ok_or(...)?` to provide an error compatible with `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |         Ok((Metadata::new(r), bytes_read))
[INFO] [stdout] 57 | |     }
[INFO] [stdout]    | |_____- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/imp/structs/metadata.rs:48:41
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     pub(crate) fn from_bytes(bytes : &mut impl Read) -> ArcResult<(Metadata, usize)>{
[INFO] [stdout] 43 | |         let (vec, bytes_read) = decode(bytes)?;
[INFO] [stdout] 44 | |         let mut i = vec.iter();
[INFO] [stdout] 45 | |         let len = i.next()?.as_i64()? as usize;
[INFO] [stdout] ...  |
[INFO] [stdout] 48 | |             let relative_path = i.next()?.as_string()?;
[INFO] [stdout]    | |                                         ^ use `.ok_or(...)?` to provide an error compatible with `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |         Ok((Metadata::new(r), bytes_read))
[INFO] [stdout] 57 | |     }
[INFO] [stdout]    | |_____- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/imp/structs/metadata.rs:48:54
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     pub(crate) fn from_bytes(bytes : &mut impl Read) -> ArcResult<(Metadata, usize)>{
[INFO] [stdout] 43 | |         let (vec, bytes_read) = decode(bytes)?;
[INFO] [stdout] 44 | |         let mut i = vec.iter();
[INFO] [stdout] 45 | |         let len = i.next()?.as_i64()? as usize;
[INFO] [stdout] ...  |
[INFO] [stdout] 48 | |             let relative_path = i.next()?.as_string()?;
[INFO] [stdout]    | |                                                      ^ use `.ok_or(...)?` to provide an error compatible with `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |         Ok((Metadata::new(r), bytes_read))
[INFO] [stdout] 57 | |     }
[INFO] [stdout]    | |_____- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/imp/structs/metadata.rs:49:34
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     pub(crate) fn from_bytes(bytes : &mut impl Read) -> ArcResult<(Metadata, usize)>{
[INFO] [stdout] 43 | |         let (vec, bytes_read) = decode(bytes)?;
[INFO] [stdout] 44 | |         let mut i = vec.iter();
[INFO] [stdout] 45 | |         let len = i.next()?.as_i64()? as usize;
[INFO] [stdout] ...  |
[INFO] [stdout] 49 | |             let millis = i.next()?.as_i64()?;
[INFO] [stdout]    | |                                  ^ use `.ok_or(...)?` to provide an error compatible with `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |         Ok((Metadata::new(r), bytes_read))
[INFO] [stdout] 57 | |     }
[INFO] [stdout]    | |_____- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/imp/structs/metadata.rs:49:44
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     pub(crate) fn from_bytes(bytes : &mut impl Read) -> ArcResult<(Metadata, usize)>{
[INFO] [stdout] 43 | |         let (vec, bytes_read) = decode(bytes)?;
[INFO] [stdout] 44 | |         let mut i = vec.iter();
[INFO] [stdout] 45 | |         let len = i.next()?.as_i64()? as usize;
[INFO] [stdout] ...  |
[INFO] [stdout] 49 | |             let millis = i.next()?.as_i64()?;
[INFO] [stdout]    | |                                            ^ use `.ok_or(...)?` to provide an error compatible with `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |         Ok((Metadata::new(r), bytes_read))
[INFO] [stdout] 57 | |     }
[INFO] [stdout]    | |_____- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/imp/structs/metadata.rs:51:72
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     pub(crate) fn from_bytes(bytes : &mut impl Read) -> ArcResult<(Metadata, usize)>{
[INFO] [stdout] 43 | |         let (vec, bytes_read) = decode(bytes)?;
[INFO] [stdout] 44 | |         let mut i = vec.iter();
[INFO] [stdout] 45 | |         let len = i.next()?.as_i64()? as usize;
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |             let modified = SystemTime::UNIX_EPOCH.checked_add(duration)?;
[INFO] [stdout]    | |                                                                        ^ use `.ok_or(...)?` to provide an error compatible with `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |         Ok((Metadata::new(r), bytes_read))
[INFO] [stdout] 57 | |     }
[INFO] [stdout]    | |_____- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/imp/structs/metadata.rs:52:37
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     pub(crate) fn from_bytes(bytes : &mut impl Read) -> ArcResult<(Metadata, usize)>{
[INFO] [stdout] 43 | |         let (vec, bytes_read) = decode(bytes)?;
[INFO] [stdout] 44 | |         let mut i = vec.iter();
[INFO] [stdout] 45 | |         let len = i.next()?.as_i64()? as usize;
[INFO] [stdout] ...  |
[INFO] [stdout] 52 | |             let bytes_len = i.next()?.as_i64()? as u64;
[INFO] [stdout]    | |                                     ^ use `.ok_or(...)?` to provide an error compatible with `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |         Ok((Metadata::new(r), bytes_read))
[INFO] [stdout] 57 | |     }
[INFO] [stdout]    | |_____- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/imp/structs/metadata.rs:52:47
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     pub(crate) fn from_bytes(bytes : &mut impl Read) -> ArcResult<(Metadata, usize)>{
[INFO] [stdout] 43 | |         let (vec, bytes_read) = decode(bytes)?;
[INFO] [stdout] 44 | |         let mut i = vec.iter();
[INFO] [stdout] 45 | |         let len = i.next()?.as_i64()? as usize;
[INFO] [stdout] ...  |
[INFO] [stdout] 52 | |             let bytes_len = i.next()?.as_i64()? as u64;
[INFO] [stdout]    | |                                               ^ use `.ok_or(...)?` to provide an error compatible with `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |         Ok((Metadata::new(r), bytes_read))
[INFO] [stdout] 57 | |     }
[INFO] [stdout]    | |_____- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dochy_archiver`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6b75e45e7fe9836281130831e3bb42b39809cce1d82cf76b7c19257d5aecb680", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b75e45e7fe9836281130831e3bb42b39809cce1d82cf76b7c19257d5aecb680", kill_on_drop: false }`
[INFO] [stdout] 6b75e45e7fe9836281130831e3bb42b39809cce1d82cf76b7c19257d5aecb680