[INFO] cloning repository https://github.com/vendethiel/smallstack
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vendethiel/smallstack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvendethiel%2Fsmallstack"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvendethiel%2Fsmallstack'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 053b8d48c8de87e036a17ee7283676eeba67ba66
[INFO] testing vendethiel/smallstack against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvendethiel%2Fsmallstack" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vendethiel/smallstack on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/vendethiel/smallstack
[INFO] finished tweaking git repo https://github.com/vendethiel/smallstack
[INFO] tweaked toml for git repo https://github.com/vendethiel/smallstack written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/vendethiel/smallstack already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: path `/workspace/builds/worker-4/source/src/smallstack.rs` was erroneously implicitly accepted for binary `smallstack`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a8c4ed42ca7fc66c7175a9b525c3f030659059448d575779859c8c7fc4927068
[INFO] running `"docker" "start" "-a" "a8c4ed42ca7fc66c7175a9b525c3f030659059448d575779859c8c7fc4927068"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/smallstack.rs` was erroneously implicitly accepted for binary `smallstack`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]    Compiling smallstack v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: expected one of `,`, `@`, `]`, or `|`, found `..`
[INFO] [stderr]   --> src/smallstack.rs:63:31
[INFO] [stderr]    |
[INFO] [stderr] 63 |         &["push", "str", ref n..] => stack.push(Expr::Str(String::from(n.join(" ")))),
[INFO] [stderr]    |                               -^
[INFO] [stderr]    |                               |
[INFO] [stderr]    |                               expected one of `,`, `@`, `]`, or `|`
[INFO] [stderr]    |                               help: missing `,`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/smallstack.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/smallstack.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |           /// XXX this should JUST be a call!
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 149 | /         &["math", op] => if let
[INFO] [stderr] 150 | |             (Some(Expr::Int(arg1)), Some(Expr::Int(arg2)))
[INFO] [stderr] 151 | |             =
[INFO] [stderr] 152 | |             (stack.pop(), stack.pop()) {
[INFO] [stderr] ...   |
[INFO] [stderr] 162 | |           panic!("VM error: not enough arguments to `math`");
[INFO] [stderr] 163 | |         },
[INFO] [stderr]     | |_________- rustdoc does not generate documentation for match arms
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `join` found for reference `&&str` in the current scope
[INFO] [stderr]   --> src/smallstack.rs:63:74
[INFO] [stderr]    |
[INFO] [stderr] 63 |         &["push", "str", ref n..] => stack.push(Expr::Str(String::from(n.join(" ")))),
[INFO] [stderr]    |                                                                          ^^^^ method not found in `&&str`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `smallstack`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a8c4ed42ca7fc66c7175a9b525c3f030659059448d575779859c8c7fc4927068"`
[INFO] running `"docker" "rm" "-f" "a8c4ed42ca7fc66c7175a9b525c3f030659059448d575779859c8c7fc4927068"`
[INFO] [stdout] a8c4ed42ca7fc66c7175a9b525c3f030659059448d575779859c8c7fc4927068