[INFO] cloning repository https://github.com/alexsparrow/rsbf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexsparrow/rsbf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexsparrow%2Frsbf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexsparrow%2Frsbf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c58ba7534416b4ee9d26a9590cd3802cc736fdd6
[INFO] testing alexsparrow/rsbf against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexsparrow%2Frsbf" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexsparrow/rsbf on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alexsparrow/rsbf
[INFO] finished tweaking git repo https://github.com/alexsparrow/rsbf
[INFO] tweaked toml for git repo https://github.com/alexsparrow/rsbf written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/alexsparrow/rsbf already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da584932588eb2d8ae8c674f40a578cf7768a24eeafc3e8e8b86888867838345
[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" "da584932588eb2d8ae8c674f40a578cf7768a24eeafc3e8e8b86888867838345", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da584932588eb2d8ae8c674f40a578cf7768a24eeafc3e8e8b86888867838345", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da584932588eb2d8ae8c674f40a578cf7768a24eeafc3e8e8b86888867838345", kill_on_drop: false }`
[INFO] [stdout] da584932588eb2d8ae8c674f40a578cf7768a24eeafc3e8e8b86888867838345
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2eeac2c0fcfd1cb6ad0acfbe9c9ce11652b04c37f07860059a591298f511aa1
[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" "b2eeac2c0fcfd1cb6ad0acfbe9c9ce11652b04c37f07860059a591298f511aa1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rsbf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:40:42
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn output(state: &mut State, write: &mut Write) {
[INFO] [stdout]    |                                          ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:72:57
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn interpret(s:&str, state: &mut State, write: &mut Write) {
[INFO] [stdout]    |                                                         ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `char_at` found for reference `&str` in the current scope
[INFO] [stdout]   --> src/lib.rs:50:21
[INFO] [stdout]    |
[INFO] [stdout] 50 |             if code.char_at(state.pc) == ']' {
[INFO] [stdout]    |                     ^^^^^^^ method not found in `&str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `char_at` found for reference `&str` in the current scope
[INFO] [stdout]   --> src/lib.rs:74:19
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let c = s.char_at(state.pc);
[INFO] [stdout]    |                   ^^^^^^^ method not found in `&str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rsbf` due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b2eeac2c0fcfd1cb6ad0acfbe9c9ce11652b04c37f07860059a591298f511aa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2eeac2c0fcfd1cb6ad0acfbe9c9ce11652b04c37f07860059a591298f511aa1", kill_on_drop: false }`
[INFO] [stdout] b2eeac2c0fcfd1cb6ad0acfbe9c9ce11652b04c37f07860059a591298f511aa1