[INFO] fetching crate cpr_bf 0.1.5...
[INFO] testing cpr_bf-0.1.5 against 1.90.0 for beta-1.91-3
[INFO] extracting crate cpr_bf 0.1.5 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate cpr_bf 0.1.5
[INFO] finished tweaking crates.io crate cpr_bf 0.1.5
[INFO] tweaked toml for crates.io crate cpr_bf 0.1.5 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cpr_bf 0.1.5 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3df05b6f5a3179b30481ce48198e7a90524733d2b1237d9efdd96202a888b8cc
[INFO] running `Command { std: "docker" "start" "-a" "3df05b6f5a3179b30481ce48198e7a90524733d2b1237d9efdd96202a888b8cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3df05b6f5a3179b30481ce48198e7a90524733d2b1237d9efdd96202a888b8cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3df05b6f5a3179b30481ce48198e7a90524733d2b1237d9efdd96202a888b8cc", kill_on_drop: false }`
[INFO] [stdout] 3df05b6f5a3179b30481ce48198e7a90524733d2b1237d9efdd96202a888b8cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2db4e09fa5e43133c8b98d8ad14e4c436d447bb00a84899fc4b87388bd34bba
[INFO] running `Command { std: "docker" "start" "-a" "c2db4e09fa5e43133c8b98d8ad14e4c436d447bb00a84899fc4b87388bd34bba", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling cpr_bf v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.28s
[INFO] running `Command { std: "docker" "inspect" "c2db4e09fa5e43133c8b98d8ad14e4c436d447bb00a84899fc4b87388bd34bba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2db4e09fa5e43133c8b98d8ad14e4c436d447bb00a84899fc4b87388bd34bba", kill_on_drop: false }`
[INFO] [stdout] c2db4e09fa5e43133c8b98d8ad14e4c436d447bb00a84899fc4b87388bd34bba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb402ced1d38182c3922e9098bf37478236c7693cdca0c537b58b3cc82287c6f
[INFO] running `Command { std: "docker" "start" "-a" "cb402ced1d38182c3922e9098bf37478236c7693cdca0c537b58b3cc82287c6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cpr_bf v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "cb402ced1d38182c3922e9098bf37478236c7693cdca0c537b58b3cc82287c6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb402ced1d38182c3922e9098bf37478236c7693cdca0c537b58b3cc82287c6f", kill_on_drop: false }`
[INFO] [stdout] cb402ced1d38182c3922e9098bf37478236c7693cdca0c537b58b3cc82287c6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 16af863b7c4f727606003b737193e8004d412c5306980fb6befa2c0614d8f74a
[INFO] running `Command { std: "docker" "start" "-a" "16af863b7c4f727606003b737193e8004d412c5306980fb6befa2c0614d8f74a", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cpr_bf-93cff67bf4a28698)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cpr_bf
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 14) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 14) stdout ----
[INFO] [stdout] error[E0596]: cannot borrow `*vm` as mutable, as `vm` is not declared as mutable
[INFO] [stdout]  --> src/lib.rs:19:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | vm.run_string(code);
[INFO] [stdout]   | ^^ cannot borrow as mutable
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]   |
[INFO] [stdout] 7 | let mut vm = cpr_bf::VMBuilder::new().build();
[INFO] [stdout]   |     +++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 14)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "16af863b7c4f727606003b737193e8004d412c5306980fb6befa2c0614d8f74a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16af863b7c4f727606003b737193e8004d412c5306980fb6befa2c0614d8f74a", kill_on_drop: false }`
[INFO] [stdout] 16af863b7c4f727606003b737193e8004d412c5306980fb6befa2c0614d8f74a