[INFO] cloning repository https://github.com/XadillaX/zh-rust-by-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/XadillaX/zh-rust-by-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXadillaX%2Fzh-rust-by-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXadillaX%2Fzh-rust-by-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e930ac171f2c6b2e97953462ce5cfcf2dd941a0a
[INFO] testing XadillaX/zh-rust-by-example against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXadillaX%2Fzh-rust-by-example" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/XadillaX/zh-rust-by-example on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/XadillaX/zh-rust-by-example
[INFO] finished tweaking git repo https://github.com/XadillaX/zh-rust-by-example
[INFO] tweaked toml for git repo https://github.com/XadillaX/zh-rust-by-example written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/XadillaX/zh-rust-by-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-serialize v0.2.10
[INFO] [stderr]   Downloaded regex v0.1.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c5d1fad332b34a272e5127f292b46d64accac007c566c473f087bbf362135d9
[INFO] running `Command { std: "docker" "start" "-a" "1c5d1fad332b34a272e5127f292b46d64accac007c566c473f087bbf362135d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c5d1fad332b34a272e5127f292b46d64accac007c566c473f087bbf362135d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c5d1fad332b34a272e5127f292b46d64accac007c566c473f087bbf362135d9", kill_on_drop: false }`
[INFO] [stdout] 1c5d1fad332b34a272e5127f292b46d64accac007c566c473f087bbf362135d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2702b6963c851860d0f4e3e8eeb03254ab2de8ba19fe94356ba791079bfdbb5
[INFO] running `Command { std: "docker" "start" "-a" "c2702b6963c851860d0f4e3e8eeb03254ab2de8ba19fe94356ba791079bfdbb5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-serialize v0.2.10
[INFO] [stderr]    Compiling regex v0.1.11
[INFO] [stdout] error: expected parameter name, found `:`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.11/src/re.rs:783:46
[INFO] [stdout]     |
[INFO] [stdout] 783 |         let text = re.replace_all(text, |&mut: refs: &Captures| -> String {
[INFO] [stdout]     |                                              ^ expected parameter name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected expression, found `]`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.10/src/serialize.rs:329:26
[INFO] [stdout]     |
[INFO] [stdout] 329 |         s.emit_str(&self[])
[INFO] [stdout]     |                          ^ expected expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `unicode`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.11/src/lib.rs:378:1
[INFO] [stdout]     |
[INFO] [stdout] 378 | extern crate unicode;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected expression, found `]`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.10/src/json.rs:1028:44
[INFO] [stdout]      |
[INFO] [stdout] 1028 |             Json::String(ref s) => Some(&s[]),
[INFO] [stdout]      |                                            ^ expected expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error: expected expression, found `]`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.10/src/json.rs:2123:63
[INFO] [stdout]      |
[INFO] [stdout] 2123 |         let idx = match names.iter().position(|n| *n == &name[]) {
[INFO] [stdout]      |                   ----- while parsing this match expression   ^ expected expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected expression, found `]`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.10/src/json.rs:3348:43
[INFO] [stdout]      |
[INFO] [stdout] 3348 |         let json_str = from_utf8(&mem_buf[]).unwrap();
[INFO] [stdout]      |                                           ^ expected expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected expression, found `]`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.10/src/json.rs:3364:43
[INFO] [stdout]      |
[INFO] [stdout] 3364 |         let json_str = from_utf8(&mem_buf[]).unwrap();
[INFO] [stdout]      |                                           ^ expected expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid suffix `us` for number literal
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.10/src/json.rs:3399:27
[INFO] [stdout]      |
[INFO] [stdout] 3399 |         for i in range(0, 4us) {
[INFO] [stdout]      |                           ^^^ invalid suffix `us`
[INFO] [stdout]      |
[INFO] [stdout]      = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected expression, found `]`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.10/src/json.rs:3404:45
[INFO] [stdout]      |
[INFO] [stdout] 3404 |             let printed = from_utf8(&writer[]).unwrap();
[INFO] [stdout]      |                                             ^ expected expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid suffix `us` for number literal
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.10/src/json.rs:3798:42
[INFO] [stdout]      |
[INFO] [stdout] 3798 |         tree_map.insert("a".to_string(), 1us);
[INFO] [stdout]      |                                          ^^^ invalid suffix `us`
[INFO] [stdout]      |
[INFO] [stdout]      = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: invalid suffix `us` for number literal
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.10/src/json.rs:3802:42
[INFO] [stdout]      |
[INFO] [stdout] 3802 |         hash_map.insert("a".to_string(), 1us);
[INFO] [stdout]      |                                          ^^^ invalid suffix `us`
[INFO] [stdout]      |
[INFO] [stdout]      = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `unicode`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.10/src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicode;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c2702b6963c851860d0f4e3e8eeb03254ab2de8ba19fe94356ba791079bfdbb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2702b6963c851860d0f4e3e8eeb03254ab2de8ba19fe94356ba791079bfdbb5", kill_on_drop: false }`
[INFO] [stdout] c2702b6963c851860d0f4e3e8eeb03254ab2de8ba19fe94356ba791079bfdbb5