[INFO] cloning repository https://github.com/mystor/ducky
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mystor/ducky" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmystor%2Fducky", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmystor%2Fducky'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d433174732e069629ce8b2d5bd4f640e5b91a111
[INFO] testing mystor/ducky against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmystor%2Fducky" "/workspace/builds/worker-16/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-16/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mystor/ducky on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mystor/ducky
[INFO] finished tweaking git repo https://github.com/mystor/ducky
[INFO] tweaked toml for git repo https://github.com/mystor/ducky written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate git repo https://github.com/mystor/ducky already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other binary targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a binary target:
[INFO] [stderr] 
[INFO] [stderr] * /workspace/builds/worker-16/source/src/main.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a binary target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autobins = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr] warning: path `/workspace/builds/worker-16/source/src/main.rs` was erroneously implicitly accepted for binary `duckyc`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded env_logger v0.2.2
[INFO] [stderr]   Downloaded lazy_static v0.1.7
[INFO] [stderr]   Downloaded log v0.2.4
[INFO] [stderr]   Downloaded regex_macros v0.1.8
[INFO] [stderr]   Downloaded bindgen v0.0.2
[INFO] [stderr]   Downloaded regex v0.1.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5d312607a33e4398e088151efda0e60daba94e55a873a88e15e96c9a1651f1a
[INFO] running `Command { std: "docker" "start" "-a" "a5d312607a33e4398e088151efda0e60daba94e55a873a88e15e96c9a1651f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5d312607a33e4398e088151efda0e60daba94e55a873a88e15e96c9a1651f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5d312607a33e4398e088151efda0e60daba94e55a873a88e15e96c9a1651f1a", kill_on_drop: false }`
[INFO] [stdout] a5d312607a33e4398e088151efda0e60daba94e55a873a88e15e96c9a1651f1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f97dbab603686fbf0e14c02650b8b1e4d6ed2b40ee7f6dd75a6c4de30614823c
[INFO] running `Command { std: "docker" "start" "-a" "f97dbab603686fbf0e14c02650b8b1e4d6ed2b40ee7f6dd75a6c4de30614823c", kill_on_drop: false }`
[INFO] [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other binary targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a binary target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/rustwide/workdir/src/main.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a binary target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autobins = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/main.rs` was erroneously implicitly accepted for binary `duckyc`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling regex v0.1.15
[INFO] [stderr]    Compiling ducky v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling log v0.2.4
[INFO] [stderr]    Compiling bindgen v0.0.2
[INFO] [stderr]    Compiling lazy_static v0.1.7
[INFO] [stdout] error[E0425]: cannot find function `at_exit` in module `rt`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/log-0.2.4/src/lib.rs:535:9
[INFO] [stdout]     |
[INFO] [stdout] 535 |     rt::at_exit(|| {
[INFO] [stdout]     |         ^^^^^^^ not found in `rt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'rt': this public module should not exist and is highly likely to disappear
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/log-0.2.4/src/lib.rs:153:5
[INFO] [stdout]     |
[INFO] [stdout] 153 | use std::rt;
[INFO] [stdout]     |     ^^^^^^^
[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-0.1.15/src/lib.rs:372:1
[INFO] [stdout]     |
[INFO] [stdout] 372 | extern crate unicode;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::borrow::IntoCow`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/re.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::borrow::{IntoCow, Cow};
[INFO] [stdout]    |                   ^^^^^^^ no `IntoCow` in `borrow`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::slice::SliceExt`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/vm.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | use std::slice::SliceExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ no `SliceExt` in `slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `log` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0423]: expected function, found module `iter::range`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:570:22
[INFO] [stdout]     |
[INFO] [stdout] 570 |             for _ in iter::range(0, min) {
[INFO] [stdout]     |                      ^^^^^^^^^^^ not a function
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function instead
[INFO] [stdout]     |
[INFO] [stdout] 11  | use std::slice::range;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found module `iter::range`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:578:22
[INFO] [stdout]     |
[INFO] [stdout] 578 |             for _ in iter::range(0, min) {
[INFO] [stdout]     |                      ^^^^^^^^^^^ not a function
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function instead
[INFO] [stdout]     |
[INFO] [stdout] 11  | use std::slice::range;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found module `iter::range`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:582:26
[INFO] [stdout]     |
[INFO] [stdout] 582 |                 for _ in iter::range(min, max.unwrap()) {
[INFO] [stdout]     |                          ^^^^^^^^^^^ not a function
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function instead
[INFO] [stdout]     |
[INFO] [stdout] 11  | use std::slice::range;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `UNICODE_CLASSES` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:661:26
[INFO] [stdout]     |
[INFO] [stdout] 661 |         match find_class(UNICODE_CLASSES, name.as_slice()) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `from_str_radix` in module `num`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:687:20
[INFO] [stdout]     |
[INFO] [stdout] 687 |         match num::from_str_radix::<u32>(s.as_slice(), 8) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^ not found in `num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `from_str_radix` in module `num`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:731:20
[INFO] [stdout]     |
[INFO] [stdout] 731 |         match num::from_str_radix::<u32>(s, 16) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^ not found in `num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `PERLD` in this scope
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:1000:16
[INFO] [stdout]      |
[INFO] [stdout] 1000 |         'd' => PERLD.to_vec(),
[INFO] [stdout]      |                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `PERLS` in this scope
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:1001:16
[INFO] [stdout]      |
[INFO] [stdout] 1001 |         's' => PERLS.to_vec(),
[INFO] [stdout]      |                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `PERLW` in this scope
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:1002:16
[INFO] [stdout]      |
[INFO] [stdout] 1002 |         'w' => PERLW.to_vec(),
[INFO] [stdout]      |                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `utf8_char_width` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/re.rs:887:17
[INFO] [stdout]     |
[INFO] [stdout] 887 |                 utf8_char_width(self.search.as_bytes()[self.last_end]);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `utf8_char_width` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/re.rs:935:17
[INFO] [stdout]     |
[INFO] [stdout] 935 |                 utf8_char_width(self.search.as_bytes()[self.last_end]);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `range` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/vm.rs:184:22
[INFO] [stdout]     |
[INFO] [stdout] 184 |             for i in range(0, clist.size) {
[INFO] [stdout]     |                      ^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]     |
[INFO] [stdout] 36  | use std::slice::range;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `range` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/vm.rs:467:20
[INFO] [stdout]     |
[INFO] [stdout] 467 |             queue: range(0, num_insts).map(|_| {
[INFO] [stdout]     |                    ^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]     |
[INFO] [stdout] 36  | use std::slice::range;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `PERLW` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/vm.rs:528:14
[INFO] [stdout]     |
[INFO] [stdout] 528 |         _ => PERLW.binary_search_by(|&(start, end)| {
[INFO] [stdout]     |              ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0603]: module `range` is private
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:570:28
[INFO] [stdout]     |
[INFO] [stdout] 570 |             for _ in iter::range(0, min) {
[INFO] [stdout]     |                            ^^^^^ private module
[INFO] [stdout]     |
[INFO] [stdout] note: the module `range` is defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0603]: module `range` is private
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:578:28
[INFO] [stdout]     |
[INFO] [stdout] 578 |             for _ in iter::range(0, min) {
[INFO] [stdout]     |                            ^^^^^ private module
[INFO] [stdout]     |
[INFO] [stdout] note: the module `range` is defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0603]: module `range` is private
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/parse.rs:582:32
[INFO] [stdout]     |
[INFO] [stdout] 582 |                 for _ in iter::range(min, max.unwrap()) {
[INFO] [stdout]     |                                ^^^^^ private module
[INFO] [stdout]     |
[INFO] [stdout] note: the module `range` is defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MatchKind: Clone` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/vm.rs:62:6
[INFO] [stdout]     |
[INFO] [stdout] 62  | impl Copy for MatchKind {}
[INFO] [stdout]     |      ^^^^ the trait `Clone` is not implemented for `MatchKind`
[INFO] [stdout]     |
[INFO] [stdout] note: required by a bound in `Copy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `StepState: Clone` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.15/src/vm.rs:111:6
[INFO] [stdout]     |
[INFO] [stdout] 111 | impl Copy for StepState {}
[INFO] [stdout]     |      ^^^^ the trait `Clone` is not implemented for `StepState`
[INFO] [stdout]     |
[INFO] [stdout] note: required by a bound in `Copy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 22 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0423, E0425, E0432, E0463, E0603.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> build.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(process, path, env)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> build.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(process, path, env)]
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> build.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(process, path, env)]
[INFO] [stdout]   |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `env` has been stable since 1.0.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> build.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(process, path, env)]
[INFO] [stdout]   |                           ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `process` has been stable since 1.0.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> build.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(process, path, env)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `path`
[INFO] [stdout]  --> build.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(process, path, env)]
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f97dbab603686fbf0e14c02650b8b1e4d6ed2b40ee7f6dd75a6c4de30614823c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f97dbab603686fbf0e14c02650b8b1e4d6ed2b40ee7f6dd75a6c4de30614823c", kill_on_drop: false }`
[INFO] [stdout] f97dbab603686fbf0e14c02650b8b1e4d6ed2b40ee7f6dd75a6c4de30614823c