[INFO] fetching crate pipec 0.2.1...
[INFO] building pipec-0.2.1 against master#eb171a227f9e5de5d376b6edb56b174bc8235fb3 for pr-149937
[INFO] extracting crate pipec 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate pipec 0.2.1
[INFO] finished tweaking crates.io crate pipec 0.2.1
[INFO] tweaked toml for crates.io crate pipec 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pipec 0.2.1 on toolchain eb171a227f9e5de5d376b6edb56b174bc8235fb3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pipec 0.2.1 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" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> src/main.rs:1054:60
[INFO] [stdout]      |
[INFO] [stdout] 1054 |     let mut lines = std::mem::take(&mut cache.lines_cache).recycle();
[INFO] [stdout]      |                                                            ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `recycle(...)` to keep using the current method
[INFO] [stdout]      = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(vec_recycle)]` to the crate attributes to enable `Vec::<T, A>::recycle`
[INFO] [stdout]      |
[INFO] [stdout]    3 + #![feature(vec_recycle)]
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> src/main.rs:1055:71
[INFO] [stdout]      |
[INFO] [stdout] 1055 |     lines.extend(cache.spans_caches.drain(..).map(|v| Line { spans: v.recycle(), ..Default::default() }));
[INFO] [stdout]      |                                                                       ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `recycle(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(vec_recycle)]` to the crate attributes to enable `Vec::<T, A>::recycle`
[INFO] [stdout]      |
[INFO] [stdout]    3 + #![feature(vec_recycle)]
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> src/main.rs:1063:96
[INFO] [stdout]      |
[INFO] [stdout] 1063 |     cache.spans_caches.extend(text.lines.iter_mut().map(|line| std::mem::take(&mut line.spans).recycle()));
[INFO] [stdout]      |                                                                                                ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `recycle(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(vec_recycle)]` to the crate attributes to enable `Vec::<T, A>::recycle`
[INFO] [stdout]      |
[INFO] [stdout]    3 + #![feature(vec_recycle)]
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> src/main.rs:1064:36
[INFO] [stdout]      |
[INFO] [stdout] 1064 |     cache.lines_cache = text.lines.recycle();
[INFO] [stdout]      |                                    ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `recycle(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(vec_recycle)]` to the crate attributes to enable `Vec::<T, A>::recycle`
[INFO] [stdout]      |
[INFO] [stdout]    3 + #![feature(vec_recycle)]
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `iterations` is never read
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/pipec-a5f84a3ed9b04058/out/pipeline_ebnf.rs:6:4784
[INFO] [stdout]   |
[INFO] [stdout] 6 | ...r) => { state = state . record_error (err) ; break ; } } iterations += 1 ; } Ok (ParseOk { result : rest_commands , state }) } pub...
[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 `iterations` is never read
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/pipec-a5f84a3ed9b04058/out/pipeline_ebnf.rs:6:7773
[INFO] [stdout]   |
[INFO] [stdout] 6 | ...r) => { state = state . record_error (err) ; break ; } } iterations += 1 ; } Ok (ParseOk { result : () , state }) } pub type Parse...
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `iterations` is never read
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/pipec-a5f84a3ed9b04058/out/pipeline_ebnf.rs:6:17710
[INFO] [stdout]   |
[INFO] [stdout] 6 | ...r) => { state = state . record_error (err) ; break ; } } iterations += 1 ; } Ok (ParseOk { result : () , state }) } pub type Parse...
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `iterations` is never read
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/pipec-a5f84a3ed9b04058/out/pipeline_ebnf.rs:6:20496
[INFO] [stdout]   |
[INFO] [stdout] 6 | ...r) => { state = state . record_error (err) ; break ; } } iterations += 1 ; } Ok (ParseOk { result : () , state }) } pub type Parse...
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `iterations` is never read
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/pipec-a5f84a3ed9b04058/out/pipeline_ebnf.rs:6:22414
[INFO] [stdout]   |
[INFO] [stdout] 6 | ...r) => { state = state . record_error (err) ; break ; } } iterations += 1 ; } Ok (ParseOk { result : () , state }) } pub type Parse...
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "e129c29ea4f801303f59465e401cd6b5581a3c3fa7491c2915e8148906326ddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e129c29ea4f801303f59465e401cd6b5581a3c3fa7491c2915e8148906326ddf", kill_on_drop: false }`
[INFO] [stdout] e129c29ea4f801303f59465e401cd6b5581a3c3fa7491c2915e8148906326ddf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c67d0f4f02f3981e82ec815b730fdf4dee7a8df8c8beeecc98d9895996c0ff99
[INFO] running `Command { std: "docker" "start" "-a" "c67d0f4f02f3981e82ec815b730fdf4dee7a8df8c8beeecc98d9895996c0ff99", kill_on_drop: false }`
[INFO] [stderr]    Compiling pipec v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> src/main.rs:1054:60
[INFO] [stdout]      |
[INFO] [stdout] 1054 |     let mut lines = std::mem::take(&mut cache.lines_cache).recycle();
[INFO] [stdout]      |                                                            ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `recycle(...)` to keep using the current method
[INFO] [stdout]      = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(vec_recycle)]` to the crate attributes to enable `Vec::<T, A>::recycle`
[INFO] [stdout]      |
[INFO] [stdout]    3 + #![feature(vec_recycle)]
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> src/main.rs:1055:71
[INFO] [stdout]      |
[INFO] [stdout] 1055 |     lines.extend(cache.spans_caches.drain(..).map(|v| Line { spans: v.recycle(), ..Default::default() }));
[INFO] [stdout]      |                                                                       ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `recycle(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(vec_recycle)]` to the crate attributes to enable `Vec::<T, A>::recycle`
[INFO] [stdout]      |
[INFO] [stdout]    3 + #![feature(vec_recycle)]
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> src/main.rs:1063:96
[INFO] [stdout]      |
[INFO] [stdout] 1063 |     cache.spans_caches.extend(text.lines.iter_mut().map(|line| std::mem::take(&mut line.spans).recycle()));
[INFO] [stdout]      |                                                                                                ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `recycle(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(vec_recycle)]` to the crate attributes to enable `Vec::<T, A>::recycle`
[INFO] [stdout]      |
[INFO] [stdout]    3 + #![feature(vec_recycle)]
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> src/main.rs:1064:36
[INFO] [stdout]      |
[INFO] [stdout] 1064 |     cache.lines_cache = text.lines.recycle();
[INFO] [stdout]      |                                    ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `recycle(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(vec_recycle)]` to the crate attributes to enable `Vec::<T, A>::recycle`
[INFO] [stdout]      |
[INFO] [stdout]    3 + #![feature(vec_recycle)]
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `iterations` is never read
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/pipec-a5f84a3ed9b04058/out/pipeline_ebnf.rs:6:4784
[INFO] [stdout]   |
[INFO] [stdout] 6 | ...r) => { state = state . record_error (err) ; break ; } } iterations += 1 ; } Ok (ParseOk { result : rest_commands , state }) } pub...
[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 `iterations` is never read
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/pipec-a5f84a3ed9b04058/out/pipeline_ebnf.rs:6:7773
[INFO] [stdout]   |
[INFO] [stdout] 6 | ...r) => { state = state . record_error (err) ; break ; } } iterations += 1 ; } Ok (ParseOk { result : () , state }) } pub type Parse...
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `iterations` is never read
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/pipec-a5f84a3ed9b04058/out/pipeline_ebnf.rs:6:17710
[INFO] [stdout]   |
[INFO] [stdout] 6 | ...r) => { state = state . record_error (err) ; break ; } } iterations += 1 ; } Ok (ParseOk { result : () , state }) } pub type Parse...
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `iterations` is never read
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/pipec-a5f84a3ed9b04058/out/pipeline_ebnf.rs:6:20496
[INFO] [stdout]   |
[INFO] [stdout] 6 | ...r) => { state = state . record_error (err) ; break ; } } iterations += 1 ; } Ok (ParseOk { result : () , state }) } pub type Parse...
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `iterations` is never read
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/pipec-a5f84a3ed9b04058/out/pipeline_ebnf.rs:6:22414
[INFO] [stdout]   |
[INFO] [stdout] 6 | ...r) => { state = state . record_error (err) ; break ; } } iterations += 1 ; } Ok (ParseOk { result : () , state }) } pub type Parse...
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.68s
[INFO] running `Command { std: "docker" "inspect" "c67d0f4f02f3981e82ec815b730fdf4dee7a8df8c8beeecc98d9895996c0ff99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c67d0f4f02f3981e82ec815b730fdf4dee7a8df8c8beeecc98d9895996c0ff99", kill_on_drop: false }`
[INFO] [stdout] c67d0f4f02f3981e82ec815b730fdf4dee7a8df8c8beeecc98d9895996c0ff99
