[INFO] fetching crate kstring 2.0.2... [INFO] checking kstring-2.0.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate kstring 2.0.2 into /workspace/builds/worker-0-tc2/source [INFO] started tweaking crates.io crate kstring 2.0.2 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate kstring 2.0.2 [INFO] tweaked toml for crates.io crate kstring 2.0.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate kstring 2.0.2 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 crates.io crate kstring 2.0.2 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] [stderr] Blocking waiting for file lock on package cache [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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7ac83442f70a9bc033bd916bc82cb868a4195e465787e1ca2e14a516830611c4 [INFO] running `Command { std: "docker" "start" "-a" "7ac83442f70a9bc033bd916bc82cb868a4195e465787e1ca2e14a516830611c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7ac83442f70a9bc033bd916bc82cb868a4195e465787e1ca2e14a516830611c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7ac83442f70a9bc033bd916bc82cb868a4195e465787e1ca2e14a516830611c4", kill_on_drop: false }` [INFO] [stdout] 7ac83442f70a9bc033bd916bc82cb868a4195e465787e1ca2e14a516830611c4 [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 -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] 481ac23941244d4dec38ebff41d4ca5db7b78ec7dcd7ffd2fb0dc980f86fc9a3 [INFO] running `Command { std: "docker" "start" "-a" "481ac23941244d4dec38ebff41d4ca5db7b78ec7dcd7ffd2fb0dc980f86fc9a3", kill_on_drop: false }` [INFO] [stderr] Compiling crossbeam-utils v0.8.8 [INFO] [stderr] Compiling syn v1.0.90 [INFO] [stderr] Compiling serde_derive v1.0.145 [INFO] [stderr] Compiling serde v1.0.145 [INFO] [stderr] Compiling libm v0.2.7 [INFO] [stderr] Compiling io-lifetimes v1.0.11 [INFO] [stderr] Compiling rustix v0.37.19 [INFO] [stderr] Compiling crossbeam-epoch v0.9.8 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Checking getrandom v0.2.6 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking fastrand v1.7.0 [INFO] [stderr] Checking anstyle v1.0.0 [INFO] [stderr] Compiling quote v1.0.17 [INFO] [stderr] Checking clap_lex v0.5.0 [INFO] [stderr] Checking linux-raw-sys v0.3.8 [INFO] [stderr] Checking criterion-plot v0.5.0 [INFO] [stderr] Checking bit-set v0.5.2 [INFO] [stderr] Checking bitflags v2.4.0 [INFO] [stderr] Checking once_cell v1.17.2 [INFO] [stderr] Checking kstring v2.0.2 (/opt/rustwide/workdir) [INFO] [stderr] Checking tempfile v3.3.0 [INFO] [stderr] Checking clap_builder v4.3.0 [INFO] [stderr] Checking crossbeam-channel v0.5.4 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/string.rs:292:53 [INFO] [stdout] | [INFO] [stdout] 292 | fn from_str(s: &str) -> Result { [INFO] [stdout] | _____________________________________________________^ [INFO] [stdout] 293 | | Ok(Self::from_ref(s)) [INFO] [stdout] 294 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/string.rs:293:9 [INFO] [stdout] | [INFO] [stdout] 293 | Ok(Self::from_ref(s)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/string_cow.rs:349:53 [INFO] [stdout] | [INFO] [stdout] 349 | fn from_str(s: &str) -> Result { [INFO] [stdout] | _____________________________________________________^ [INFO] [stdout] 350 | | Ok(Self::from_string(s.into())) [INFO] [stdout] 351 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/string_cow.rs:350:9 [INFO] [stdout] | [INFO] [stdout] 350 | Ok(Self::from_string(s.into())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `kstring` (lib) due to 4 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "481ac23941244d4dec38ebff41d4ca5db7b78ec7dcd7ffd2fb0dc980f86fc9a3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "481ac23941244d4dec38ebff41d4ca5db7b78ec7dcd7ffd2fb0dc980f86fc9a3", kill_on_drop: false }` [INFO] [stdout] 481ac23941244d4dec38ebff41d4ca5db7b78ec7dcd7ffd2fb0dc980f86fc9a3