[INFO] fetching crate uu_head 0.0.21...
[INFO] checking uu_head-0.0.21 against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950
[INFO] extracting crate uu_head 0.0.21 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate uu_head 0.0.21 on toolchain 23ffd2897cbb44320ca18dfe4d05dbacb37d55e0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uu_head 0.0.21
[INFO] finished tweaking crates.io crate uu_head 0.0.21
[INFO] tweaked toml for crates.io crate uu_head 0.0.21 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate uu_head 0.0.21 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" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4391f053dd83d1441d70a1cbd44647e3c45a75dfed5ef7f791209cff207923c
[INFO] running `Command { std: "docker" "start" "-a" "c4391f053dd83d1441d70a1cbd44647e3c45a75dfed5ef7f791209cff207923c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4391f053dd83d1441d70a1cbd44647e3c45a75dfed5ef7f791209cff207923c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4391f053dd83d1441d70a1cbd44647e3c45a75dfed5ef7f791209cff207923c", kill_on_drop: false }`
[INFO] [stdout] c4391f053dd83d1441d70a1cbd44647e3c45a75dfed5ef7f791209cff207923c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a49e4f786960ad731e4d0b83e64eda0c6b2a4712f15561cb857d5ecd5f44a5e1
[INFO] running `Command { std: "docker" "start" "-a" "a49e4f786960ad731e4d0b83e64eda0c6b2a4712f15561cb857d5ecd5f44a5e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling rustix v0.38.8
[INFO] [stderr]    Compiling rustix v0.37.23
[INFO] [stderr]     Checking linux-raw-sys v0.4.5
[INFO] [stderr]     Checking bitflags v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling uuhelp_parser v0.0.21
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking os_display v0.1.3
[INFO] [stderr]     Checking wild v2.1.0
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking memchr v2.6.2
[INFO] [stderr]    Compiling uucore_procs v0.0.21
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking anstream v0.3.2
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking terminal_size v0.2.6
[INFO] [stderr]     Checking clap_builder v4.3.21
[INFO] [stderr]     Checking clap v4.3.21
[INFO] [stderr]     Checking uucore v0.0.21
[INFO] [stderr]     Checking uu_head v0.0.21 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0515]: cannot return value referencing local variable `second`
[INFO] [stdout]    --> src/head.rs:160:35
[INFO] [stdout]     |
[INFO] [stdout] 158 |         if let Some(s) = second.to_str() {
[INFO] [stdout]     |                          ------ `second` is borrowed here
[INFO] [stdout] 159 |             match parse::parse_obsolete(s) {
[INFO] [stdout] 160 |                 Some(Ok(iter)) => Ok(Box::new(vec![first].into_iter().chain(iter).chain(args))),
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0505]: cannot move out of `second` because it is borrowed
[INFO] [stdout]    --> src/head.rs:174:49
[INFO] [stdout]     |
[INFO] [stdout] 152 | fn arg_iterate<'a>(
[INFO] [stdout]     |                -- lifetime `'a` defined here
[INFO] [stdout] ...
[INFO] [stdout] 157 |     if let Some(second) = args.next() {
[INFO] [stdout]     |                 ------ binding `second` declared here
[INFO] [stdout] 158 |         if let Some(s) = second.to_str() {
[INFO] [stdout]     |                          ------ borrow of `second` occurs here
[INFO] [stdout] 159 |             match parse::parse_obsolete(s) {
[INFO] [stdout] 160 |                 Some(Ok(iter)) => Ok(Box::new(vec![first].into_iter().chain(iter).chain(args))),
[INFO] [stdout]     |                                   ------------------------------------------------------------- returning this value requires that `second` is borrowed for `'a`
[INFO] [stdout] ...
[INFO] [stdout] 174 |                 None => Ok(Box::new(vec![first, second].into_iter().chain(args))),
[INFO] [stdout]     |                                                 ^^^^^^ move out of `second` occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0505, E0515.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0505`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `uu_head` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0515]: cannot return value referencing local variable `second`
[INFO] [stdout]    --> src/head.rs:160:35
[INFO] [stdout]     |
[INFO] [stdout] 158 |         if let Some(s) = second.to_str() {
[INFO] [stdout]     |                          ------ `second` is borrowed here
[INFO] [stdout] 159 |             match parse::parse_obsolete(s) {
[INFO] [stdout] 160 |                 Some(Ok(iter)) => Ok(Box::new(vec![first].into_iter().chain(iter).chain(args))),
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0505]: cannot move out of `second` because it is borrowed
[INFO] [stdout]    --> src/head.rs:174:49
[INFO] [stdout]     |
[INFO] [stdout] 152 | fn arg_iterate<'a>(
[INFO] [stdout]     |                -- lifetime `'a` defined here
[INFO] [stdout] ...
[INFO] [stdout] 157 |     if let Some(second) = args.next() {
[INFO] [stdout]     |                 ------ binding `second` declared here
[INFO] [stdout] 158 |         if let Some(s) = second.to_str() {
[INFO] [stdout]     |                          ------ borrow of `second` occurs here
[INFO] [stdout] 159 |             match parse::parse_obsolete(s) {
[INFO] [stdout] 160 |                 Some(Ok(iter)) => Ok(Box::new(vec![first].into_iter().chain(iter).chain(args))),
[INFO] [stdout]     |                                   ------------------------------------------------------------- returning this value requires that `second` is borrowed for `'a`
[INFO] [stdout] ...
[INFO] [stdout] 174 |                 None => Ok(Box::new(vec![first, second].into_iter().chain(args))),
[INFO] [stdout]     |                                                 ^^^^^^ move out of `second` occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0505, E0515.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0505`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `uu_head` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "a49e4f786960ad731e4d0b83e64eda0c6b2a4712f15561cb857d5ecd5f44a5e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a49e4f786960ad731e4d0b83e64eda0c6b2a4712f15561cb857d5ecd5f44a5e1", kill_on_drop: false }`
[INFO] [stdout] a49e4f786960ad731e4d0b83e64eda0c6b2a4712f15561cb857d5ecd5f44a5e1