[INFO] fetching crate yada_mod 0.4.0...
[INFO] testing yada_mod-0.4.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate yada_mod 0.4.0 into /workspace/builds/worker-5-tc1/source
[INFO] removed /workspace/builds/worker-5-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate yada_mod 0.4.0
[INFO] finished tweaking crates.io crate yada_mod 0.4.0
[INFO] tweaked toml for crates.io crate yada_mod 0.4.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate yada_mod 0.4.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate yada_mod 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fc3b5866749827edb5dce6d743597b3d18893c7df3c1985e1cb4759868207eb
[INFO] running `Command { std: "docker" "start" "-a" "5fc3b5866749827edb5dce6d743597b3d18893c7df3c1985e1cb4759868207eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fc3b5866749827edb5dce6d743597b3d18893c7df3c1985e1cb4759868207eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fc3b5866749827edb5dce6d743597b3d18893c7df3c1985e1cb4759868207eb", kill_on_drop: false }`
[INFO] [stdout] 5fc3b5866749827edb5dce6d743597b3d18893c7df3c1985e1cb4759868207eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dee57a32fab326aab122ef918bf01af34198c55a97a65989c4227f8e21c6853a
[INFO] running `Command { std: "docker" "start" "-a" "dee57a32fab326aab122ef918bf01af34198c55a97a65989c4227f8e21c6853a", kill_on_drop: false }`
[INFO] [stderr]    Compiling yada_mod v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/builder.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let mut last_label = labels.last_mut().unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "dee57a32fab326aab122ef918bf01af34198c55a97a65989c4227f8e21c6853a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dee57a32fab326aab122ef918bf01af34198c55a97a65989c4227f8e21c6853a", kill_on_drop: false }`
[INFO] [stdout] dee57a32fab326aab122ef918bf01af34198c55a97a65989c4227f8e21c6853a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fa9777a765cd0ca51c4bb4703b8e0c0547adc0ff6280362ff6662b5b28f7025
[INFO] running `Command { std: "docker" "start" "-a" "4fa9777a765cd0ca51c4bb4703b8e0c0547adc0ff6280362ff6662b5b28f7025", kill_on_drop: false }`
[INFO] [stderr]    Compiling yada_mod v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/builder.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let mut last_label = labels.last_mut().unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `yada`
[INFO] [stdout]  --> examples/build_and_search.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate yada;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `yada`
[INFO] [stdout]  --> examples/load_from_file.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate yada;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yada_mod` (example "build_and_search") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `yada_mod` (example "load_from_file") due to 1 previous error
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/builder.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let mut last_label = labels.last_mut().unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4fa9777a765cd0ca51c4bb4703b8e0c0547adc0ff6280362ff6662b5b28f7025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fa9777a765cd0ca51c4bb4703b8e0c0547adc0ff6280362ff6662b5b28f7025", kill_on_drop: false }`
[INFO] [stdout] 4fa9777a765cd0ca51c4bb4703b8e0c0547adc0ff6280362ff6662b5b28f7025