[INFO] cloning repository https://github.com/Tevinthuku/coding_challenges_fyi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Tevinthuku/coding_challenges_fyi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTevinthuku%2Fcoding_challenges_fyi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTevinthuku%2Fcoding_challenges_fyi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 617f7be86b95e08127f06d586164cf0ba5cfd69a
[INFO] testing Tevinthuku/coding_challenges_fyi against beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTevinthuku%2Fcoding_challenges_fyi" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Tevinthuku/coding_challenges_fyi
[INFO] finished tweaking git repo https://github.com/Tevinthuku/coding_challenges_fyi
[INFO] tweaked toml for git repo https://github.com/Tevinthuku/coding_challenges_fyi written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Tevinthuku/coding_challenges_fyi on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Tevinthuku/coding_challenges_fyi 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" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6b23c43532ac4f585b4e0bff2baef5a236ec8811c360c59fbd5ffe7289423f7
[INFO] running `Command { std: "docker" "start" "-a" "f6b23c43532ac4f585b4e0bff2baef5a236ec8811c360c59fbd5ffe7289423f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6b23c43532ac4f585b4e0bff2baef5a236ec8811c360c59fbd5ffe7289423f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6b23c43532ac4f585b4e0bff2baef5a236ec8811c360c59fbd5ffe7289423f7", kill_on_drop: false }`
[INFO] [stdout] f6b23c43532ac4f585b4e0bff2baef5a236ec8811c360c59fbd5ffe7289423f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 761c726f4c47481b330b8db6ba72604d8d8e8248fbdfea75c20be8c72b9291a7
[INFO] running `Command { std: "docker" "start" "-a" "761c726f4c47481b330b8db6ba72604d8d8e8248fbdfea75c20be8c72b9291a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling serde_json v1.0.138
[INFO] [stderr]    Compiling openssl-sys v0.9.104
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[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling zstd-sys v2.0.13+zstd.1.5.6
[INFO] [stderr]    Compiling brotli-decompressor v4.0.2
[INFO] [stderr]    Compiling actix-service v2.0.2
[INFO] [stderr]    Compiling bytestring v1.4.0
[INFO] [stderr]    Compiling native-tls v0.2.13
[INFO] [stderr]    Compiling flate2 v1.0.35
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
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[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling brotli v6.0.0
[INFO] [stderr]    Compiling tokio v1.43.0
[INFO] [stderr]    Compiling env_filter v0.1.3
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]    Compiling env_logger v0.11.6
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
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[INFO] [stderr]    Compiling futures-util v0.3.31
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[INFO] [stderr]    Compiling rust-ini v0.18.0
[INFO] [stderr]    Compiling syn v1.0.109
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[INFO] [stderr]    Compiling tempfile v3.16.0
[INFO] [stderr]    Compiling pathdiff v0.2.3
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling arc-swap v1.7.1
[INFO] [stderr]    Compiling sha1_smol v1.0.1
[INFO] [stderr]    Compiling clap_builder v4.5.27
[INFO] [stderr]    Compiling dirs-sys v0.4.1
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling dirs v5.0.1
[INFO] [stderr]    Compiling uuid v1.12.1
[INFO] [stderr]    Compiling bitstream-rs v0.2.0
[INFO] [stderr]    Compiling multipeek v0.1.2
[INFO] [stderr]    Compiling ccwc v0.1.0 (/opt/rustwide/workdir/ccwc)
[INFO] [stderr]    Compiling cut v0.1.0 (/opt/rustwide/workdir/cut)
[INFO] [stderr]    Compiling json-parser v0.1.0 (/opt/rustwide/workdir/json-parser)
[INFO] [stderr]    Compiling tokio-stream v0.1.17
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling zerofrom-derive v0.1.5
[INFO] [stderr]    Compiling yoke-derive v0.7.5
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling icu_provider_macros v1.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling zerofrom v0.1.5
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling yoke v0.7.5
[INFO] [stderr]    Compiling zerovec v0.10.4
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling actix-macros v0.2.4
[INFO] [stderr]    Compiling tinystr v0.7.6
[INFO] [stderr]    Compiling icu_collections v1.5.0
[INFO] [stderr]    Compiling icu_locid v1.5.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling async-trait v0.1.85
[INFO] [stderr]    Compiling icu_provider v1.5.0
[INFO] [stderr]    Compiling icu_locid_transform v1.5.0
[INFO] [stderr]    Compiling derive_more v0.99.18
[INFO] [stderr]    Compiling thiserror-impl v2.0.11
[INFO] [stderr]    Compiling icu_properties v1.5.1
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling zstd-safe v7.2.1
[INFO] [stderr]    Compiling zstd v0.13.2
[INFO] [stderr]    Compiling hashlink v0.8.4
[INFO] [stderr]    Compiling pest v2.7.15
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling pin-project-internal v1.1.8
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling actix-router v0.5.3
[INFO] [stderr]    Compiling icu_normalizer v1.5.0
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling idna_adapter v1.2.0
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling idna v1.0.3
[INFO] [stderr]    Compiling actix-web-codegen v4.3.0
[INFO] [stderr]    Compiling url v2.5.4
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling pest_meta v2.7.15
[INFO] [stderr]    Compiling pin-project v1.1.8
[INFO] [stderr]    Compiling chrono v0.4.39
[INFO] [stderr]    Compiling pest_generator v2.7.15
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling ron v0.7.1
[INFO] [stderr]    Compiling clap_derive v4.5.24
[INFO] [stderr]    Compiling pest_derive v2.7.15
[INFO] [stderr]    Compiling sqlx-core v0.7.4
[INFO] [stderr]    Compiling json5 v0.4.1
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling tokio-util v0.7.13
[INFO] [stderr]    Compiling actix-rt v2.10.0
[INFO] [stderr]    Compiling h2 v0.3.26
[INFO] [stderr]    Compiling actix-codec v0.5.2
[INFO] [stderr]    Compiling actix-server v2.5.0
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling combine v4.6.7
[INFO] [stderr]    Compiling tokio-retry v0.3.0
[INFO] [stderr]    Compiling config v0.13.4
[INFO] [stderr]    Compiling sqlx-postgres v0.7.4
[INFO] [stderr]    Compiling clap v4.5.27
[INFO] [stderr]    Compiling redis-server v0.1.0 (/opt/rustwide/workdir/redis-server)
[INFO] [stderr]    Compiling sha256 v1.5.0
[INFO] [stderr]    Compiling web_server v0.1.0 (/opt/rustwide/workdir/web-server)
[INFO] [stderr]    Compiling memcached v0.1.0 (/opt/rustwide/workdir/memcached)
[INFO] [stderr]    Compiling shell v0.1.0 (/opt/rustwide/workdir/shell)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> memcached/src/db.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<String, Content> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<'_, String, Content> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling actix-http v3.9.0
[INFO] [stderr]    Compiling hyper v0.14.32
[INFO] [stderr]    Compiling redis v0.25.4
[INFO] [stderr]    Compiling sqlx-macros-core v0.7.4
[INFO] [stderr]    Compiling diff-tool v0.1.0 (/opt/rustwide/workdir/diff-tool)
[INFO] [stderr]    Compiling sort-tool v0.1.0 (/opt/rustwide/workdir/sort-tool)
[INFO] [stderr]    Compiling actix-web v4.9.0
[INFO] [stderr]    Compiling huffman-compression v0.1.0 (/opt/rustwide/workdir/huffman-compression)
[INFO] [stderr]    Compiling sqlx-macros v0.7.4
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling sqlx v0.7.4
[INFO] [stderr]    Compiling reqwest v0.11.27
[INFO] [stderr]    Compiling actix-cors v0.7.0
[INFO] [stderr]    Compiling ratelimiter v0.1.0 (/opt/rustwide/workdir/ratelimiter)
[INFO] [stderr]    Compiling load-balancer v0.1.0 (/opt/rustwide/workdir/load-balancer)
[INFO] [stderr]    Compiling server v0.1.0 (/opt/rustwide/workdir/url-shortener/server)
[INFO] [stderr]    Compiling http-load-tester v0.1.0 (/opt/rustwide/workdir/http-load-tester)
[INFO] [stdout] warning: unused import: `command`
[INFO] [stdout]  --> http-load-tester/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::{command, Parser};
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]  --> load-balancer/src/bin/load-balancer/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | use log::{error, info, warn};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 01s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: redis v0.25.4, sqlx-postgres v0.7.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "761c726f4c47481b330b8db6ba72604d8d8e8248fbdfea75c20be8c72b9291a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "761c726f4c47481b330b8db6ba72604d8d8e8248fbdfea75c20be8c72b9291a7", kill_on_drop: false }`
[INFO] [stdout] 761c726f4c47481b330b8db6ba72604d8d8e8248fbdfea75c20be8c72b9291a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36835cecd10e9b1969cd9e4b2f48dda418158486a42a41e90ed61e252e6bc92a
[INFO] running `Command { std: "docker" "start" "-a" "36835cecd10e9b1969cd9e4b2f48dda418158486a42a41e90ed61e252e6bc92a", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.25
[INFO] [stderr]    Compiling relative-path v1.9.3
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling memcached v0.1.0 (/opt/rustwide/workdir/memcached)
[INFO] [stderr]    Compiling huffman-compression v0.1.0 (/opt/rustwide/workdir/huffman-compression)
[INFO] [stderr]    Compiling server v0.1.0 (/opt/rustwide/workdir/url-shortener/server)
[INFO] [stderr]    Compiling shell v0.1.0 (/opt/rustwide/workdir/shell)
[INFO] [stderr]    Compiling http-load-tester v0.1.0 (/opt/rustwide/workdir/http-load-tester)
[INFO] [stdout] warning: unused import: `command`
[INFO] [stdout]  --> http-load-tester/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::{command, Parser};
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> memcached/src/db.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<String, Content> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<'_, String, Content> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ratelimiter v0.1.0 (/opt/rustwide/workdir/ratelimiter)
[INFO] [stderr]    Compiling load-balancer v0.1.0 (/opt/rustwide/workdir/load-balancer)
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]  --> load-balancer/src/bin/load-balancer/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | use log::{error, info, warn};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sort-tool v0.1.0 (/opt/rustwide/workdir/sort-tool)
[INFO] [stderr]    Compiling web_server v0.1.0 (/opt/rustwide/workdir/web-server)
[INFO] [stderr]    Compiling cut v0.1.0 (/opt/rustwide/workdir/cut)
[INFO] [stderr]    Compiling rstest_macros v0.18.2
[INFO] [stderr]    Compiling ccwc v0.1.0 (/opt/rustwide/workdir/ccwc)
[INFO] [stderr]    Compiling rstest v0.18.2
[INFO] [stderr]    Compiling redis-server v0.1.0 (/opt/rustwide/workdir/redis-server)
[INFO] [stderr]    Compiling json-parser v0.1.0 (/opt/rustwide/workdir/json-parser)
[INFO] [stderr]    Compiling diff-tool v0.1.0 (/opt/rustwide/workdir/diff-tool)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.26s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: redis v0.25.4, sqlx-postgres v0.7.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "36835cecd10e9b1969cd9e4b2f48dda418158486a42a41e90ed61e252e6bc92a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36835cecd10e9b1969cd9e4b2f48dda418158486a42a41e90ed61e252e6bc92a", kill_on_drop: false }`
[INFO] [stdout] 36835cecd10e9b1969cd9e4b2f48dda418158486a42a41e90ed61e252e6bc92a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cce65b707fa381a003a2860c6526ca0af62f572a6b92d2060af3028d80af2d11
[INFO] running `Command { std: "docker" "start" "-a" "cce65b707fa381a003a2860c6526ca0af62f572a6b92d2060af3028d80af2d11", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> memcached/src/db.rs:81:17
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<String, Content> {
[INFO] [stderr]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<'_, String, Content> {
[INFO] [stderr]    |                                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: `memcached` (bin "memcached" test) generated 1 warning (run `cargo fix --bin "memcached" -p memcached --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `command`
[INFO] [stderr]  --> http-load-tester/src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | use clap::{command, Parser};
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `error`
[INFO] [stderr]  --> load-balancer/src/bin/load-balancer/mod.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 | use log::{error, info, warn};
[INFO] [stderr]   |           ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `http-load-tester` (bin "http-load-tester" test) generated 1 warning (run `cargo fix --bin "http-load-tester" -p http-load-tester --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `load-balancer` (bin "load-balancer" test) generated 1 warning (run `cargo fix --bin "load-balancer" -p load-balancer --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: redis v0.25.4, sqlx-postgres v0.7.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/ccwc-23148550a15db999)
[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]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cut-7dcb394b8c98010d)
[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]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/diff_tool-065e59f2e51173fa)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_least_common_sequence::case_1 ... ok
[INFO] [stdout] test tests::test_least_common_sequence_for_many_2 ... ok
[INFO] [stdout] test tests::test_least_common_sequence_for_many ... ok
[INFO] [stdout] test tests::test_differences ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/http_load_tester-68d32111fa2067f1)
[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]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/huffman_compression-d42560fa352220f8)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test prefix_code_table::tests::test_code_generation ... ok
[INFO] [stdout] test encode_decode::tests::test_encoding_decoding ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- encode_decode::tests::test_encoding_decoding stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'encode_decode::tests::test_encoding_decoding' (33) panicked at huffman-compression/src/encode_decode.rs:189:52:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x59fa3e696312 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x59fa3e696312 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x59fa3e696312 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x59fa3e696312 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x59fa3e6a6c7a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x59fa3e6a6c7a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x59fa3e6651f6 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x59fa3e6651f6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x59fa3e675799 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x59fa3e675799 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x59fa3e675631 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x59fa3e633aae - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x59fa3e633aae - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x59fa3e675a12 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x59fa3e675a12 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x59fa3e675858 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x59fa3e670de9 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x59fa3e65961d - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x59fa3e6ae15c - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x59fa3e6ad942 - core::result::unwrap_failed::h7d4c34940aded59c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x59fa3e5db3a0 - core::result::Result<T,E>::unwrap::h6a51b885d4d0f9ea
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x59fa3e5db3a0 - huffman_compression::encode_decode::tests::test_encoding_decoding::hfe037368c2148437
[INFO] [stdout]                                at /opt/rustwide/workdir/huffman-compression/src/encode_decode.rs:189:52
[INFO] [stdout]   22:     0x59fa3e5db467 - huffman_compression::encode_decode::tests::test_encoding_decoding::{{closure}}::h4bc8143468b46736
[INFO] [stdout]                                at /opt/rustwide/workdir/huffman-compression/src/encode_decode.rs:185:32
[INFO] [stdout]   23:     0x59fa3e5edcc6 - core::ops::function::FnOnce::call_once::h3f547619ce3a8069
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x59fa3e6338ab - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x59fa3e6338ab - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x59fa3e64727a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x59fa3e64727a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x59fa3e64727a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x59fa3e64727a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x59fa3e64727a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x59fa3e64727a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x59fa3e64727a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x59fa3e6216d4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x59fa3e6216d4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x59fa3e624f92 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x59fa3e624f92 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x59fa3e624f92 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x59fa3e624f92 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x59fa3e624f92 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x59fa3e624f92 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x59fa3e624f92 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x59fa3e66c07f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x59fa3e66c07f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x77d889b94aa4 - <unknown>
[INFO] [stdout]   45:     0x77d889c21a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     encode_decode::tests::test_encoding_decoding
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `-p huffman-compression --bin huffman-compression`
[INFO] running `Command { std: "docker" "inspect" "cce65b707fa381a003a2860c6526ca0af62f572a6b92d2060af3028d80af2d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cce65b707fa381a003a2860c6526ca0af62f572a6b92d2060af3028d80af2d11", kill_on_drop: false }`
[INFO] [stdout] cce65b707fa381a003a2860c6526ca0af62f572a6b92d2060af3028d80af2d11
