[INFO] cloning repository https://github.com/bramvdbogaerde/slip-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bramvdbogaerde/slip-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbramvdbogaerde%2Fslip-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbramvdbogaerde%2Fslip-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7fc79c05aaa5713d81012a631a9416f285bbdf25
[INFO] testing bramvdbogaerde/slip-rs against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbramvdbogaerde%2Fslip-rs" "/workspace/builds/worker-39/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-39/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bramvdbogaerde/slip-rs 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/bramvdbogaerde/slip-rs
[INFO] finished tweaking git repo https://github.com/bramvdbogaerde/slip-rs
[INFO] tweaked toml for git repo https://github.com/bramvdbogaerde/slip-rs written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] crate git repo https://github.com/bramvdbogaerde/slip-rs 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] 3ea9a190c87f5c1c550be79b00b38f36a12270dd21292012aa55d1b9d9addaae
[INFO] running `Command { std: "docker" "start" "-a" "3ea9a190c87f5c1c550be79b00b38f36a12270dd21292012aa55d1b9d9addaae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ea9a190c87f5c1c550be79b00b38f36a12270dd21292012aa55d1b9d9addaae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ea9a190c87f5c1c550be79b00b38f36a12270dd21292012aa55d1b9d9addaae", kill_on_drop: false }`
[INFO] [stdout] 3ea9a190c87f5c1c550be79b00b38f36a12270dd21292012aa55d1b9d9addaae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] e19b78945b295fff92ece6ac0d6467d60253f64ffe2cefaaeadc8fc536a206b6
[INFO] running `Command { std: "docker" "start" "-a" "e19b78945b295fff92ece6ac0d6467d60253f64ffe2cefaaeadc8fc536a206b6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling slipmemory v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/main.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 | use memory::{Memory, Cell};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/grammar.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `pai2` as immutable because it is also borrowed as mutable
[INFO] [stdout]   --> src/main.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pai2._cdr.set(&pai2.any());
[INFO] [stdout]    |     ----      ---  ^^^^^^^^^^ immutable borrow occurs here
[INFO] [stdout]    |     |         |
[INFO] [stdout]    |     |         mutable borrow later used by call
[INFO] [stdout]    |     mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `slipmemory` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e19b78945b295fff92ece6ac0d6467d60253f64ffe2cefaaeadc8fc536a206b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e19b78945b295fff92ece6ac0d6467d60253f64ffe2cefaaeadc8fc536a206b6", kill_on_drop: false }`
[INFO] [stdout] e19b78945b295fff92ece6ac0d6467d60253f64ffe2cefaaeadc8fc536a206b6