[INFO] fetching crate dochy_fs 0.1.0...
[INFO] checking dochy_fs-0.1.0 against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] extracting crate dochy_fs 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate dochy_fs 0.1.0 on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dochy_fs 0.1.0
[INFO] finished tweaking crates.io crate dochy_fs 0.1.0
[INFO] tweaked toml for crates.io crate dochy_fs 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] Downloading crates ...
[INFO] [stderr] Downloaded metrohash v1.0.6
[INFO] [stderr] Downloaded dochy_compaction v0.1.0
[INFO] [stderr] Downloaded dochy_archiver v0.1.3
[INFO] [stderr] Downloaded with_capacity_safe v0.2.0
[INFO] [stderr] Downloaded dochy_diff v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e77aee20d3a2c06439f2372016ca0f9b1f0b0c78707ddb3234e91cbf10dcd9ac
[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" "e77aee20d3a2c06439f2372016ca0f9b1f0b0c78707ddb3234e91cbf10dcd9ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e77aee20d3a2c06439f2372016ca0f9b1f0b0c78707ddb3234e91cbf10dcd9ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e77aee20d3a2c06439f2372016ca0f9b1f0b0c78707ddb3234e91cbf10dcd9ac", kill_on_drop: false }`
[INFO] [stdout] e77aee20d3a2c06439f2372016ca0f9b1f0b0c78707ddb3234e91cbf10dcd9ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e84bc494fc7dc44e42067a21daec15203bc45476f802a0046c73c0d5db3f26d
[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" "2e84bc494fc7dc44e42067a21daec15203bc45476f802a0046c73c0d5db3f26d", kill_on_drop: false }`
[INFO] [stderr] Compiling libc v0.2.87
[INFO] [stderr] Checking cfg-if v1.0.0
[INFO] [stderr] Compiling proc-macro2 v1.0.24
[INFO] [stderr] Compiling memchr v2.3.4
[INFO] [stderr] Compiling unicode-xid v0.2.1
[INFO] [stderr] Compiling anyhow v1.0.38
[INFO] [stderr] Checking ppv-lite86 v0.2.10
[INFO] [stderr] Compiling getrandom v0.1.16
[INFO] [stderr] Compiling syn v1.0.60
[INFO] [stderr] Checking once_cell v1.7.2
[INFO] [stderr] Compiling getrandom v0.2.2
[INFO] [stderr] Checking regex-syntax v0.6.22
[INFO] [stderr] Checking lazy_static v1.4.0
[INFO] [stderr] Checking with_capacity_safe v0.2.0
[INFO] [stderr] Compiling snap v1.0.4
[INFO] [stderr] Checking arrayvec v0.5.2
[INFO] [stderr] Checking fnv v1.0.7
[INFO] [stderr] Checking remove_dir_all v0.5.3
[INFO] [stderr] Checking metrohash v1.0.6
[INFO] [stderr] Checking thread_local v1.1.3
[INFO] [stderr] Compiling quote v1.0.9
[INFO] [stderr] Checking aho-corasick v0.7.15
[INFO] [stderr] Checking rand_core v0.5.1
[INFO] [stderr] Checking rand_core v0.6.2
[INFO] [stderr] Checking rand_chacha v0.2.2
[INFO] [stderr] Checking rand_chacha v0.3.0
[INFO] [stderr] Checking rand v0.7.3
[INFO] [stderr] Checking rand v0.8.3
[INFO] [stderr] Checking regex v1.4.3
[INFO] [stderr] Checking tempfile v3.2.0
[INFO] [stderr] Compiling pest_generator v2.1.3
[INFO] [stderr] Checking dochy_compaction v0.1.0
[INFO] [stderr] Checking dochy_archiver v0.1.3
[INFO] [stderr] Compiling pest_derive v2.1.0
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a method that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dochy_archiver-0.1.3/src/imp/structs/metadata.rs:41:19
[INFO] [stdout] |
[INFO] [stdout] 38 | / pub(crate) fn from_bytes(bytes : &mut impl Read) -> ArcResult<(Metadata, usize)>{
[INFO] [stdout] 39 | | let (vec, bytes_read) = decode(bytes)?;
[INFO] [stdout] 40 | | let mut i = vec.iter();
[INFO] [stdout] 41 | | let len = i.next()?.as_i64()? as usize;
[INFO] [stdout] | | ^^^^^^^^^ cannot use the `?` operator in a method that returns `Result<(metadata::Metadata, usize), NouArcError>`
[INFO] [stdout] ... |
[INFO] [stdout] 52 | | Ok((Metadata::new(r), bytes_read))
[INFO] [stdout] 53 | | }
[INFO] [stdout] | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] |
[INFO] [stdout] = help: the trait `FromResidual