[INFO] updating cached repository https://github.com/hank-der-hafenarbeiter/Rust-Shannon-Fano
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3e0ac514158b1fedea8336ce35ab5bb2a9e7f7c4
[INFO] testing hank-der-hafenarbeiter/Rust-Shannon-Fano against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhank-der-hafenarbeiter%2FRust-Shannon-Fano" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hank-der-hafenarbeiter/Rust-Shannon-Fano 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/hank-der-hafenarbeiter/Rust-Shannon-Fano
[INFO] finished tweaking git repo https://github.com/hank-der-hafenarbeiter/Rust-Shannon-Fano
[INFO] tweaked toml for git repo https://github.com/hank-der-hafenarbeiter/Rust-Shannon-Fano written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/hank-der-hafenarbeiter/Rust-Shannon-Fano 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] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 5a4331e5aff2c332f358e609d313e46ac92a00b4f0f386aafdaa727e26ae60b8
[INFO] running `"docker" "start" "-a" "5a4331e5aff2c332f358e609d313e46ac92a00b4f0f386aafdaa727e26ae60b8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling SFCodec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::boxed`
[INFO] [stderr]  --> src/binvec.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::boxed;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice`
[INFO] [stderr]  --> src/binvec.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::slice;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `append` found for struct `binvec::BinVec` in the current scope
[INFO] [stderr]   --> src/sfcodec.rs:83:24
[INFO] [stderr]    |
[INFO] [stderr] 83 |                 output.append(thread.join());
[INFO] [stderr]    |                        ^^^^^^ method not found in `binvec::BinVec`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/binvec.rs:5:1
[INFO] [stderr]    |
[INFO] [stderr] 5  | pub struct BinVec {
[INFO] [stderr]    | ----------------- method `append` not found for this
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `append` found for struct `binvec::BinVec` in the current scope
[INFO] [stderr]   --> src/sfcodec.rs:86:20
[INFO] [stderr]    |
[INFO] [stderr] 86 |             output.append(t_result); 
[INFO] [stderr]    |                    ^^^^^^ method not found in `binvec::BinVec`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/binvec.rs:5:1
[INFO] [stderr]    |
[INFO] [stderr] 5  | pub struct BinVec {
[INFO] [stderr]    | ----------------- method `append` not found for this
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `SFCodec`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5a4331e5aff2c332f358e609d313e46ac92a00b4f0f386aafdaa727e26ae60b8"`
[INFO] running `"docker" "rm" "-f" "5a4331e5aff2c332f358e609d313e46ac92a00b4f0f386aafdaa727e26ae60b8"`
[INFO] [stdout] 5a4331e5aff2c332f358e609d313e46ac92a00b4f0f386aafdaa727e26ae60b8