[INFO] cloning repository https://github.com/mtottenh/RIPS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mtottenh/RIPS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtottenh%2FRIPS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtottenh%2FRIPS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6219ec2b03cca3f8ff4b1a17d1270add5e11d10f
[INFO] documenting mtottenh/RIPS 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%2Fmtottenh%2FRIPS" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mtottenh/RIPS 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/mtottenh/RIPS
[INFO] finished tweaking git repo https://github.com/mtottenh/RIPS
[INFO] tweaked toml for git repo https://github.com/mtottenh/RIPS written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mtottenh/RIPS 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 strsim v0.9.1
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc385535a8eda82fa7ff5f03f7629135307abd6f108bf8ea4c4fce72ff10ce0d
[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" "dc385535a8eda82fa7ff5f03f7629135307abd6f108bf8ea4c4fce72ff10ce0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc385535a8eda82fa7ff5f03f7629135307abd6f108bf8ea4c4fce72ff10ce0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc385535a8eda82fa7ff5f03f7629135307abd6f108bf8ea4c4fce72ff10ce0d", kill_on_drop: false }`
[INFO] [stdout] dc385535a8eda82fa7ff5f03f7629135307abd6f108bf8ea4c4fce72ff10ce0d
[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" "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] aef703d9a724bd75577ee0f6a03a02728a9deeab305d2b67dd980f65f33ee41e
[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" "aef703d9a724bd75577ee0f6a03a02728a9deeab305d2b67dd980f65f33ee41e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking strsim v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking docopt v1.1.0
[INFO] [stderr]  Documenting rips v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected identifier, found reserved identifier `_`
[INFO] [stdout]   --> src/emulator.rs:81:41
[INFO] [stdout]    |
[INFO] [stdout] 81 |                 Some(Instruction::RType{_,r1,r2,r3}) => {
[INFO] [stdout]    |                                         ^ expected identifier, found reserved identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found reserved identifier `_`
[INFO] [stdout]   --> src/emulator.rs:97:41
[INFO] [stdout]    |
[INFO] [stdout] 97 |                 Some(Instruction::IType{_,r1,r2,imm}) => {
[INFO] [stdout]    |                                         ^ expected identifier, found reserved identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found reserved identifier `_`
[INFO] [stdout]    --> src/emulator.rs:113:41
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 Some(Instruction::IType{_, r1, r2, imm}) => {
[INFO] [stdout]     |                                         ^ expected identifier, found reserved identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found reserved identifier `_`
[INFO] [stdout]    --> src/emulator.rs:124:41
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 Some(Instruction::RType{_,r1,r2,r3}) => { 
[INFO] [stdout]     |                                         ^ expected identifier, found reserved identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found reserved identifier `_`
[INFO] [stdout]    --> src/emulator.rs:135:41
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 Some(Instruction::IType{_, r1 ,r2, imm}) => {
[INFO] [stdout]     |                                         ^ expected identifier, found reserved identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found reserved identifier `_`
[INFO] [stdout]    --> src/emulator.rs:149:41
[INFO] [stdout]     |
[INFO] [stdout] 149 |                 Some(Instruction::IType{_,r1,r2,imm}) => {
[INFO] [stdout]     |                                         ^ expected identifier, found reserved identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found reserved identifier `_`
[INFO] [stdout]    --> src/emulator.rs:162:40
[INFO] [stdout]     |
[INFO] [stdout] 162 |                Some(Instruction::IType{_,r1,r2,imm}) => {
[INFO] [stdout]     |                                        ^ expected identifier, found reserved identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found reserved identifier `_`
[INFO] [stdout]    --> src/emulator.rs:194:41
[INFO] [stdout]     |
[INFO] [stdout] 194 |                 Some(Instruction::RType{_, r1, _, _}) => {
[INFO] [stdout]     |                                         ^ expected identifier, found reserved identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found reserved identifier `_`
[INFO] [stdout]    --> src/emulator.rs:194:48
[INFO] [stdout]     |
[INFO] [stdout] 194 |                 Some(Instruction::RType{_, r1, _, _}) => {
[INFO] [stdout]     |                                                ^ expected identifier, found reserved identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found reserved identifier `_`
[INFO] [stdout]    --> src/emulator.rs:194:51
[INFO] [stdout]     |
[INFO] [stdout] 194 |                 Some(Instruction::RType{_, r1, _, _}) => {
[INFO] [stdout]     |                                                   ^ expected identifier, found reserved identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `rips`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name rips src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern docopt=/opt/rustwide/target/debug/deps/libdocopt-5748dd7f33b66e7f.rmeta --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-eddfb9427ca0b1f2.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-d83290c37da285e4.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "aef703d9a724bd75577ee0f6a03a02728a9deeab305d2b67dd980f65f33ee41e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aef703d9a724bd75577ee0f6a03a02728a9deeab305d2b67dd980f65f33ee41e", kill_on_drop: false }`
[INFO] [stdout] aef703d9a724bd75577ee0f6a03a02728a9deeab305d2b67dd980f65f33ee41e