[INFO] cloning repository https://github.com/tomo3110/backupfs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomo3110/backupfs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomo3110%2Fbackupfs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomo3110%2Fbackupfs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 08e3a5dcf257bb1e6ad1f422ce0c2e29ab499bef
[INFO] documenting tomo3110/backupfs against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomo3110%2Fbackupfs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomo3110/backupfs on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tomo3110/backupfs
[INFO] finished tweaking git repo https://github.com/tomo3110/backupfs
[INFO] tweaked toml for git repo https://github.com/tomo3110/backupfs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/tomo3110/backupfs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zip v0.4.2
[INFO] [stderr]   Downloaded dirs v1.0.3
[INFO] [stderr]   Downloaded flate2 v1.0.2
[INFO] [stderr]   Downloaded miniz_oxide_c_api v0.1.3
[INFO] [stderr]   Downloaded miniz_oxide v0.1.3
[INFO] [stderr]   Downloaded filedb v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cfb6fb372d5fbdfc65c03c596c6bde9fb3d7cd44fd899f17e7cda3fb34c2077
[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" "2cfb6fb372d5fbdfc65c03c596c6bde9fb3d7cd44fd899f17e7cda3fb34c2077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cfb6fb372d5fbdfc65c03c596c6bde9fb3d7cd44fd899f17e7cda3fb34c2077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cfb6fb372d5fbdfc65c03c596c6bde9fb3d7cd44fd899f17e7cda3fb34c2077", kill_on_drop: false }`
[INFO] [stdout] 2cfb6fb372d5fbdfc65c03c596c6bde9fb3d7cd44fd899f17e7cda3fb34c2077
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "RUSTDOCFLAGS=--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1289e365de0269f4ba547031c3ea6fd290f57d083813d18304d3d138e8b9f59
[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" "b1289e365de0269f4ba547031c3ea6fd290f57d083813d18304d3d138e8b9f59", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.78
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]     Checking podio v0.1.6
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking same-file v1.0.3
[INFO] [stderr]     Checking miniz_oxide v0.1.3
[INFO] [stderr]     Checking memchr v2.0.2
[INFO] [stderr]     Checking dirs v1.0.3
[INFO] [stderr]    Compiling bzip2-sys v0.1.6
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking msdos_time v0.1.6
[INFO] [stderr]     Checking tempfile v3.0.4
[INFO] [stderr]     Checking ryu v0.2.6
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking walkdir v2.2.5
[INFO] [stderr]     Checking backtrace-sys v0.1.24
[INFO] [stderr]     Checking ctrlc v3.1.1
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking flate2 v1.0.2
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking zip v0.4.2
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]    Compiling serde_derive v1.0.78
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking serde_json v1.0.27
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]     Checking filedb v0.1.1
[INFO] [stderr]     Checking backupfs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting backupfs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:51:39
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Error::Io(ref err) => err.description(),
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:52:41
[INFO] [stdout]    |
[INFO] [stdout] 52 |             Error::Json(ref err) => err.description(),
[INFO] [stdout]    |                                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:53:43
[INFO] [stdout]    |
[INFO] [stdout] 53 |             Error::Poison(ref err) => err.description(),
[INFO] [stdout]    |                                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:54:44
[INFO] [stdout]    |
[INFO] [stdout] 54 |             Error::WalkDir(ref err) => err.description(),
[INFO] [stdout]    |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:55:40
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Error::Zip(ref err) => err.description(),
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hash/mod.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |             let mut file: File = File::open(path)?;
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hash/mod.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |             let mut info: Metadata = file.metadata()?;
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.23s
[INFO] running `Command { std: "docker" "inspect" "b1289e365de0269f4ba547031c3ea6fd290f57d083813d18304d3d138e8b9f59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1289e365de0269f4ba547031c3ea6fd290f57d083813d18304d3d138e8b9f59", kill_on_drop: false }`
[INFO] [stdout] b1289e365de0269f4ba547031c3ea6fd290f57d083813d18304d3d138e8b9f59