[INFO] cloning repository https://github.com/ozqs/rrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ozqs/rrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fozqs%2Frrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fozqs%2Frrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b19e7a3abd28c84364ae8646c3dcc23d76629e6f
[INFO] checking ozqs/rrs against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fozqs%2Frrs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ozqs/rrs
[INFO] finished tweaking git repo https://github.com/ozqs/rrs
[INFO] tweaked toml for git repo https://github.com/ozqs/rrs written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ozqs/rrs on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ozqs/rrs 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d89fab031181d96ead32a3e27905ca0c457442914d113009c46a066f103a5d7e
[INFO] running `Command { std: "docker" "start" "-a" "d89fab031181d96ead32a3e27905ca0c457442914d113009c46a066f103a5d7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d89fab031181d96ead32a3e27905ca0c457442914d113009c46a066f103a5d7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d89fab031181d96ead32a3e27905ca0c457442914d113009c46a066f103a5d7e", kill_on_drop: false }`
[INFO] [stdout] d89fab031181d96ead32a3e27905ca0c457442914d113009c46a066f103a5d7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d95bf583270f6cb8a3b595d0214ce92ba354aae58fdd731ac954dc559cc4f49f
[INFO] running `Command { std: "docker" "start" "-a" "d95bf583270f6cb8a3b595d0214ce92ba354aae58fdd731ac954dc559cc4f49f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling serde v1.0.206
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]     Checking bytes v1.7.1
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling httparse v1.9.4
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]    Compiling time-macros v0.2.18
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling cookie v0.18.1
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling ref-cast v1.0.23
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]    Compiling syn v2.0.73
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking mio v1.0.1
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling deranged v0.3.11
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]    Compiling uncased v0.9.10
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling tokio v1.39.2
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling time v0.3.36
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]     Checking winnow v0.6.18
[INFO] [stderr]    Compiling tower-service v0.3.2
[INFO] [stderr]    Compiling inlinable_string v0.1.15
[INFO] [stderr]    Compiling httpdate v1.0.3
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling stable-pattern v0.1.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling figment v0.10.19
[INFO] [stderr]    Compiling multer v3.1.0
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling indexmap v2.3.0
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling state v0.6.0
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]     Checking encoding_rs v0.8.34
[INFO] [stderr]    Compiling rocket v0.5.1
[INFO] [stderr]     Checking fastrand v2.1.0
[INFO] [stderr]    Compiling devise_core v0.4.1
[INFO] [stderr]    Compiling hyper v0.14.30
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking binascii v0.1.4
[INFO] [stderr]     Checking atomic v0.5.3
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking tempfile v3.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.206
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling pear_codegen v0.2.9
[INFO] [stderr]    Compiling ref-cast-impl v1.0.23
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling devise_codegen v0.4.1
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]    Compiling devise v0.4.1
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]    Compiling async-trait v0.1.81
[INFO] [stderr]     Checking pear v0.2.9
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rocket_http v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling rocket_codegen v0.5.1
[INFO] [stderr]     Checking tokio-util v0.7.11
[INFO] [stderr]     Checking tokio-stream v0.1.15
[INFO] [stderr]     Checking serde_spanned v0.6.7
[INFO] [stderr]     Checking toml_datetime v0.6.8
[INFO] [stderr]     Checking ubyte v0.10.4
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking toml_edit v0.22.20
[INFO] [stderr]     Checking toml v0.8.19
[INFO] [stderr]     Checking rrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<&str, Infallible>
[INFO] [stdout]   --> src/main.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn search_book(name: &str, start: usize, seek: usize) -> String {
[INFO] [stdout]    |                      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rrs` (bin "rrs") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<&str, Infallible>
[INFO] [stdout]   --> src/main.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn search_book(name: &str, start: usize, seek: usize) -> String {
[INFO] [stdout]    |                      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rrs` (bin "rrs" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d95bf583270f6cb8a3b595d0214ce92ba354aae58fdd731ac954dc559cc4f49f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d95bf583270f6cb8a3b595d0214ce92ba354aae58fdd731ac954dc559cc4f49f", kill_on_drop: false }`
[INFO] [stdout] d95bf583270f6cb8a3b595d0214ce92ba354aae58fdd731ac954dc559cc4f49f
