[INFO] cloning repository https://github.com/11Takanori/echo-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/11Takanori/echo-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F11Takanori%2Fecho-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F11Takanori%2Fecho-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f143acc40b1fa08b72b4e8758dd3146eadf6ac8d
[INFO] checking 11Takanori/echo-in-rust against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F11Takanori%2Fecho-in-rust" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/11Takanori/echo-in-rust on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/11Takanori/echo-in-rust
[INFO] finished tweaking git repo https://github.com/11Takanori/echo-in-rust
[INFO] tweaked toml for git repo https://github.com/11Takanori/echo-in-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/11Takanori/echo-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] bcc33b0dc1c9ba4225b9baf190dceba7fa448a1007ea58a60315515470005679
[INFO] running `Command { std: "docker" "start" "-a" "bcc33b0dc1c9ba4225b9baf190dceba7fa448a1007ea58a60315515470005679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcc33b0dc1c9ba4225b9baf190dceba7fa448a1007ea58a60315515470005679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcc33b0dc1c9ba4225b9baf190dceba7fa448a1007ea58a60315515470005679", kill_on_drop: false }`
[INFO] [stdout] bcc33b0dc1c9ba4225b9baf190dceba7fa448a1007ea58a60315515470005679
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7aad70090468c6db28380f37e4f131a48b4c1fc8ae09cdb834dbfa18f4970a3c
[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" "7aad70090468c6db28380f37e4f131a48b4c1fc8ae09cdb834dbfa18f4970a3c", kill_on_drop: false }`
[INFO] [stderr]     Checking echo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected `;`, found keyword `if`
[INFO] [stdout]   --> src/main.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 |     }
[INFO] [stdout]    |      ^ help: add `;` here
[INFO] [stdout] 35 | 
[INFO] [stdout] 36 |     if matches.opt_present("help") {
[INFO] [stdout]    |     -- unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected `;`, found keyword `if`
[INFO] [stdout]   --> src/main.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 |     }
[INFO] [stdout]    |      ^ help: add `;` here
[INFO] [stdout] 35 | 
[INFO] [stdout] 36 |     if matches.opt_present("help") {
[INFO] [stdout]    |     -- unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]   --> src/main.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::old_io::{print, println};
[INFO] [stdout]    |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]   --> src/main.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::old_io::stdio;
[INFO] [stdout]    |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `print`
[INFO] [stdout]   --> src/main.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         print!("")
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `print`
[INFO] [stdout]   --> src/main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         print!(string.as_slice());
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         println!("");
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         println!("");
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         println!(" {} [SHORT-OPTION]... [STRING]...", program);
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         println!("Usage:");
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         println!("");
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         println!("echo {} - display a line of text", VERSION);
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             println!("{}", f);
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]   --> src/main.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::old_io::{print, println};
[INFO] [stdout]    |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]   --> src/main.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::old_io::stdio;
[INFO] [stdout]    |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `print`
[INFO] [stdout]   --> src/main.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         print!("")
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `print`
[INFO] [stdout]   --> src/main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         print!(string.as_slice());
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         println!("");
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         println!("");
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         println!(" {} [SHORT-OPTION]... [STRING]...", program);
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         println!("Usage:");
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         println!("");
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         println!("echo {} - display a line of text", VERSION);
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `println`
[INFO] [stdout]   --> src/main.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             println!("{}", f);
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `optflag` in crate `getopts`
[INFO] [stdout]   --> src/main.rs:21:18
[INFO] [stdout]    |
[INFO] [stdout] 21 |         getopts::optflag("n", "", "do not output the trding newline"),
[INFO] [stdout]    |                  ^^^^^^^ not found in `getopts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `optflag` in crate `getopts`
[INFO] [stdout]   --> src/main.rs:22:18
[INFO] [stdout]    |
[INFO] [stdout] 22 |         getopts::optflag("h", "help", "display this help and exit"),
[INFO] [stdout]    |                  ^^^^^^^ not found in `getopts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `optflag` in crate `getopts`
[INFO] [stdout]   --> src/main.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |         getopts::optflag("V", "version",
[INFO] [stdout]    |                  ^^^^^^^ not found in `getopts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `getopts` in crate `getopts`
[INFO] [stdout]   --> src/main.rs:27:34
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let matches = match getopts::getopts(args.tail(), &opts) {
[INFO] [stdout]    |                                  ^^^^^^^ not found in `getopts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `set_exit_status` in module `env`
[INFO] [stdout]   --> src/main.rs:31:18
[INFO] [stdout]    |
[INFO] [stdout] 31 |             env::set_exit_status(1);
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^ not found in `env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `usage` in crate `getopts`
[INFO] [stdout]   --> src/main.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |         println(getopts::usage("Echo the STRING(s) to standard output.", &opts)
[INFO] [stdout]    |                          ^^^^^ not found in `getopts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(io)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(rustc_private)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(core)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(env)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(collections)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `optflag` in crate `getopts`
[INFO] [stdout]   --> src/main.rs:21:18
[INFO] [stdout]    |
[INFO] [stdout] 21 |         getopts::optflag("n", "", "do not output the trding newline"),
[INFO] [stdout]    |                  ^^^^^^^ not found in `getopts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `optflag` in crate `getopts`
[INFO] [stdout]   --> src/main.rs:22:18
[INFO] [stdout]    |
[INFO] [stdout] 22 |         getopts::optflag("h", "help", "display this help and exit"),
[INFO] [stdout]    |                  ^^^^^^^ not found in `getopts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `optflag` in crate `getopts`
[INFO] [stdout]   --> src/main.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |         getopts::optflag("V", "version",
[INFO] [stdout]    |                  ^^^^^^^ not found in `getopts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `getopts` in crate `getopts`
[INFO] [stdout]   --> src/main.rs:27:34
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let matches = match getopts::getopts(args.tail(), &opts) {
[INFO] [stdout]    |                                  ^^^^^^^ not found in `getopts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `set_exit_status` in module `env`
[INFO] [stdout]   --> src/main.rs:31:18
[INFO] [stdout]    |
[INFO] [stdout] 31 |             env::set_exit_status(1);
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^ not found in `env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `usage` in crate `getopts`
[INFO] [stdout]   --> src/main.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |         println(getopts::usage("Echo the STRING(s) to standard output.", &opts)
[INFO] [stdout]    |                          ^^^^^ not found in `getopts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(io)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(rustc_private)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(core)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(env)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(collections)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `tail` found for struct `Vec<String>` in the current scope
[INFO] [stdout]   --> src/main.rs:27:47
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let matches = match getopts::getopts(args.tail(), &opts) {
[INFO] [stdout]    |                                               ^^^^ method not found in `Vec<String>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 24 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0432, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `echo`
[INFO] [stdout] error[E0599]: no method named `tail` found for struct `Vec<String>` in the current scope
[INFO] [stdout]   --> src/main.rs:27:47
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let matches = match getopts::getopts(args.tail(), &opts) {
[INFO] [stdout]    |                                               ^^^^ method not found in `Vec<String>`
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stdout] error: aborting due to 24 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stdout] Some errors have detailed explanations: E0425, E0432, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7aad70090468c6db28380f37e4f131a48b4c1fc8ae09cdb834dbfa18f4970a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aad70090468c6db28380f37e4f131a48b4c1fc8ae09cdb834dbfa18f4970a3c", kill_on_drop: false }`
[INFO] [stdout] 7aad70090468c6db28380f37e4f131a48b4c1fc8ae09cdb834dbfa18f4970a3c