[INFO] cloning repository https://github.com/serbanrobu/tree-calculus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/serbanrobu/tree-calculus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserbanrobu%2Ftree-calculus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserbanrobu%2Ftree-calculus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3973dd390426ed0e08eade953804b4bca8913cd3
[INFO] checking serbanrobu/tree-calculus/3973dd390426ed0e08eade953804b4bca8913cd3 against master#fcac501a73cdde54de46a0683567f1a890730555 for pr-151102
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserbanrobu%2Ftree-calculus" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/serbanrobu/tree-calculus
[INFO] finished tweaking git repo https://github.com/serbanrobu/tree-calculus
[INFO] tweaked toml for git repo https://github.com/serbanrobu/tree-calculus written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/serbanrobu/tree-calculus on toolchain fcac501a73cdde54de46a0683567f1a890730555
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fcac501a73cdde54de46a0683567f1a890730555" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/serbanrobu/tree-calculus 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" "+fcac501a73cdde54de46a0683567f1a890730555" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded miette-derive v7.5.0
[INFO] [stderr]   Downloaded supports-color v3.0.2
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[INFO] [stderr]   Downloaded lalrpop v0.22.1
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[INFO] [stderr]   Downloaded logos v0.15.0
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+fcac501a73cdde54de46a0683567f1a890730555" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 248c4d7e3bb297d9b1e570d1218e4e375bfe958b0c9155eb95a0b3f440b87aa4
[INFO] running `Command { std: "docker" "start" "-a" "248c4d7e3bb297d9b1e570d1218e4e375bfe958b0c9155eb95a0b3f440b87aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "248c4d7e3bb297d9b1e570d1218e4e375bfe958b0c9155eb95a0b3f440b87aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "248c4d7e3bb297d9b1e570d1218e4e375bfe958b0c9155eb95a0b3f440b87aa4", kill_on_drop: false }`
[INFO] [stdout] 248c4d7e3bb297d9b1e570d1218e4e375bfe958b0c9155eb95a0b3f440b87aa4
[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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+fcac501a73cdde54de46a0683567f1a890730555" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be243212b818ca29efa6d945053d248f11cadec8412d07b7a3f483bbf0c4eca2
[INFO] running `Command { std: "docker" "start" "-a" "be243212b818ca29efa6d945053d248f11cadec8412d07b7a3f483bbf0c4eca2", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.17
[INFO] [stderr]    Compiling semver v1.0.25
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling smallvec v1.14.0
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[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]    Compiling indexmap v2.7.1
[INFO] [stderr]    Compiling log v0.4.26
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling fixedbitset v0.5.7
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling bit-vec v0.8.0
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]    Compiling term v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling ena v0.14.3
[INFO] [stderr]    Compiling bit-set v0.8.0
[INFO] [stderr]     Checking miniz_oxide v0.8.5
[INFO] [stderr]     Checking object v0.36.7
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[INFO] [stderr]    Compiling itertools v0.14.0
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[INFO] [stderr]    Compiling string_cache v0.8.8
[INFO] [stderr]    Compiling ascii-canvas v4.0.0
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]     Checking unicode-linebreak v0.1.5
[INFO] [stderr]    Compiling petgraph v0.7.1
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[INFO] [stderr]    Compiling serde v1.0.218
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]    Compiling syn v2.0.98
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[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
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[INFO] [stderr]     Checking supports-hyperlinks v3.1.0
[INFO] [stderr]     Checking hashlink v0.9.1
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling lalrpop-util v0.22.1
[INFO] [stderr]    Compiling lalrpop v0.22.1
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]     Checking backtrace-ext v0.2.1
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling miette-derive v7.5.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.11
[INFO] [stderr]    Compiling clap_derive v4.5.28
[INFO] [stderr]    Compiling serde_derive v1.0.218
[INFO] [stderr]    Compiling salsa-macros v0.18.0
[INFO] [stderr]    Compiling logos-derive v0.15.0
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking logos v0.15.0
[INFO] [stderr]     Checking miette v7.5.0
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking clap v4.5.30
[INFO] [stderr]     Checking salsa v0.18.0
[INFO] [stderr]    Compiling tree-calculus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `char` is never read
[INFO] [stdout]   --> src/lexer.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         char: char,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `char` is never read
[INFO] [stdout]   --> src/lexer.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         char: char,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `token` is never read
[INFO] [stdout]   --> src/parser.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         token: Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `char` is never read
[INFO] [stdout]   --> src/parser.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         char: char,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `token` is never read
[INFO] [stdout]   --> src/parser.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         token: Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `char` is never read
[INFO] [stdout]   --> src/parser.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         char: char,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_index`
[INFO] [stdout]    --> src/ty.rs:124:21
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 let variant_index = fork.left_branch(db);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_index`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/ty.rs:125:21
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 let value = fork.right_branch(db);
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `neutral_value`
[INFO] [stdout]    --> src/ty.rs:129:30
[INFO] [stdout]     |
[INFO] [stdout] 129 |             Self::Reflection(neutral_value) => {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_neutral_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_index`
[INFO] [stdout]    --> src/ty.rs:124:21
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 let variant_index = fork.left_branch(db);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_index`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/ty.rs:125:21
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 let value = fork.right_branch(db);
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `neutral_value`
[INFO] [stdout]    --> src/ty.rs:129:30
[INFO] [stdout]     |
[INFO] [stdout] 129 |             Self::Reflection(neutral_value) => {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_neutral_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Role` is never used
[INFO] [stdout]    --> src/tree/mod.rs:184:6
[INFO] [stdout]     |
[INFO] [stdout] 184 | enum Role {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]    --> src/tree/mod.rs:191:8
[INFO] [stdout]     |
[INFO] [stdout] 191 | struct User {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.56s
[INFO] running `Command { std: "docker" "inspect" "be243212b818ca29efa6d945053d248f11cadec8412d07b7a3f483bbf0c4eca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be243212b818ca29efa6d945053d248f11cadec8412d07b7a3f483bbf0c4eca2", kill_on_drop: false }`
[INFO] [stdout] be243212b818ca29efa6d945053d248f11cadec8412d07b7a3f483bbf0c4eca2