[INFO] fetching crate mako 0.3.0...
[INFO] testing mako-0.3.0 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] extracting crate mako 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate mako 0.3.0
[INFO] finished tweaking crates.io crate mako 0.3.0
[INFO] tweaked toml for crates.io crate mako 0.3.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mako 0.3.0 on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 159 packages to latest compatible versions
[INFO] [stderr]       Adding clap v2.34.0 (available: v4.6.0)
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.8.2)
[INFO] [stderr]       Adding derive_builder v0.9.0 (available: v0.20.2)
[INFO] [stderr]       Adding indicatif v0.15.0 (available: v0.18.4)
[INFO] [stderr]       Adding itertools v0.9.0 (available: v0.14.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.10.0)
[INFO] [stderr]       Adding rayon-cond v0.2.0 (available: v0.4.0)
[INFO] [stderr]       Adding regex-syntax v0.6.29 (available: v0.8.10)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03ea13dee1df0ac13b988d73ce2913e3760db0a8e45aab58f64dd02fe657c398
[INFO] running `Command { std: "docker" "start" "-a" "03ea13dee1df0ac13b988d73ce2913e3760db0a8e45aab58f64dd02fe657c398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03ea13dee1df0ac13b988d73ce2913e3760db0a8e45aab58f64dd02fe657c398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03ea13dee1df0ac13b988d73ce2913e3760db0a8e45aab58f64dd02fe657c398", kill_on_drop: false }`
[INFO] [stdout] 03ea13dee1df0ac13b988d73ce2913e3760db0a8e45aab58f64dd02fe657c398
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24e1fef2522940686340d4c30362c17ba7c8b390c1c9352cce794d5450341c26
[INFO] running `Command { std: "docker" "start" "-a" "24e1fef2522940686340d4c30362c17ba7c8b390c1c9352cce794d5450341c26", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling onig_sys v69.9.1
[INFO] [stderr]    Compiling esaxx-rs v0.1.10
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]    Compiling unicode-width v0.2.2
[INFO] [stderr]    Compiling owning_ref v0.2.4
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling number_prefix v0.3.0
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling smallvec v0.3.4
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling console v0.16.3
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling unicode-normalization-alignments v0.1.12
[INFO] [stderr]    Compiling thread-control v0.1.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling lentrait v0.2.3
[INFO] [stderr]    Compiling parking_lot v0.3.8
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]    Compiling indicatif v0.15.0
[INFO] [stderr]    Compiling multiqueue v0.3.2
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling rayon-cond v0.2.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling onig v6.5.1
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling spm_precompiled v0.1.4
[INFO] [stderr]    Compiling mako v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
[INFO] [stdout]    --> src/tokenization/hf_tokenizers/models/bpe/trainer.rs:517:47
[INFO] [stdout]     |
[INFO] [stdout] 513 |                     let w = &words[*i] as *const _ as *mut _;
[INFO] [stdout]     |                             -------------------------------- casting happened here
[INFO] [stdout] ...
[INFO] [stdout] 517 |                         let word: &mut Word = &mut (*w);
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
[INFO] [stdout]     = note: `#[deny(invalid_reference_casting)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mako` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "24e1fef2522940686340d4c30362c17ba7c8b390c1c9352cce794d5450341c26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e1fef2522940686340d4c30362c17ba7c8b390c1c9352cce794d5450341c26", kill_on_drop: false }`
[INFO] [stdout] 24e1fef2522940686340d4c30362c17ba7c8b390c1c9352cce794d5450341c26
