[INFO] cloning repository https://github.com/ilslv/rust-incubator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ilslv/rust-incubator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Filslv%2Frust-incubator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Filslv%2Frust-incubator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6294833c3073b7239c37c83993931b800617587a
[INFO] testing ilslv/rust-incubator against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Filslv%2Frust-incubator" "/workspace/builds/worker-65/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-65/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ilslv/rust-incubator on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ilslv/rust-incubator
[INFO] finished tweaking git repo https://github.com/ilslv/rust-incubator
[INFO] tweaked toml for git repo https://github.com/ilslv/rust-incubator written to /workspace/builds/worker-65/source/Cargo.toml
[INFO] crate git repo https://github.com/ilslv/rust-incubator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stdout] 1981ece7aaa12aca3b2eb104a923ff62d92ac78a8b032457cb9d2908cb38e4bf
[INFO] running `Command { std: "docker" "start" "-a" "1981ece7aaa12aca3b2eb104a923ff62d92ac78a8b032457cb9d2908cb38e4bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1981ece7aaa12aca3b2eb104a923ff62d92ac78a8b032457cb9d2908cb38e4bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1981ece7aaa12aca3b2eb104a923ff62d92ac78a8b032457cb9d2908cb38e4bf", kill_on_drop: false }`
[INFO] [stdout] 1981ece7aaa12aca3b2eb104a923ff62d92ac78a8b032457cb9d2908cb38e4bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab806b5f9ceaf4338be375a91e5f9bfe906f14af3c1c98fa7fe931aa0ad54549
[INFO] running `Command { std: "docker" "start" "-a" "ab806b5f9ceaf4338be375a91e5f9bfe906f14af3c1c98fa7fe931aa0ad54549", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling proc-macro2 v1.0.20
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling memchr v2.3.3
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[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
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[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling bindgen v0.48.1
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[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
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[INFO] [stderr]    Compiling ascii v0.9.3
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[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling v_htmlescape v0.4.5
[INFO] [stderr]    Compiling block-padding v0.2.1
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling keccak v0.1.0
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling humantime v2.0.1
[INFO] [stderr]    Compiling ipnet v2.3.0
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling step_1_3 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_3_rc_cell)
[INFO] [stderr]    Compiling step_2_1 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_1_type_safety)
[INFO] [stderr]    Compiling step_1_4 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_4_cow)
[INFO] [stderr]    Compiling step_1_1 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_1_default_clone_copy)
[INFO] [stderr]    Compiling step_3_1 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_1_testing)
[INFO] [stderr]    Compiling step_2 v0.1.0 (/opt/rustwide/workdir/2_idioms)
[INFO] [stderr]    Compiling step_2_4 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_4_generic_in_type_out)
[INFO] [stderr]    Compiling step_1_2 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_2_box_pin)
[INFO] [stderr]    Compiling step_2_2 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_2_mem_replace)
[INFO] [stderr]    Compiling step_2_3 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_3_bound_impl)
[INFO] [stderr]    Compiling step_1_7 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_7_sized)
[INFO] [stderr]    Compiling step_1_6 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_6_dispatch)
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling tracing-core v0.1.16
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling miniz_oxide v0.4.1
[INFO] [stderr]    Compiling lock_api v0.4.1
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn new(data: String) -> Pin<Box<Self>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> 1_concepts/1_6_dispatch/src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     id: u64,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `email`
[INFO] [stdout]   --> 1_concepts/1_6_dispatch/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     email: Cow<'static, str>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `activated`
[INFO] [stdout]   --> 1_concepts/1_6_dispatch/src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     activated: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_user`
[INFO] [stdout]   --> 1_concepts/1_6_dispatch/src/main.rs:74:16
[INFO] [stdout]    |
[INFO] [stdout] 74 |         pub fn update_user(&mut self, key: K, updated_user: User) -> Result<(), Error> {
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_user`
[INFO] [stdout]   --> 1_concepts/1_6_dispatch/src/main.rs:84:16
[INFO] [stdout]    |
[INFO] [stdout] 84 |         pub fn remove_user(&mut self, key: &K) -> Result<User, Error> {
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_user`
[INFO] [stdout]    --> 1_concepts/1_6_dispatch/src/main.rs:126:16
[INFO] [stdout]     |
[INFO] [stdout] 126 |         pub fn update_user(&mut self, key: K, updated_user: User) -> Result<(), Error> {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_user`
[INFO] [stdout]    --> 1_concepts/1_6_dispatch/src/main.rs:136:16
[INFO] [stdout]     |
[INFO] [stdout] 136 |         pub fn remove_user(&mut self, key: &K) -> Result<User, Error> {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> 1_concepts/1_7_sized/src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     id: u64,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lru-cache v0.1.2
[INFO] [stderr]    Compiling yaml-rust v0.4.4
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling bytestring v0.1.5
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stdout] warning: field is never read: `email`
[INFO] [stdout]   --> 1_concepts/1_7_sized/src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     email: Cow<'static, str>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `activated`
[INFO] [stdout]   --> 1_concepts/1_7_sized/src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     activated: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.18/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=7adb07e7d078c59f -C extra-filename=-7adb07e7d078c59f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused imports: `Body`, `Title`
[INFO] [stdout]  --> 2_idioms/2_1_type_safety/src/main.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use crate::utils::post::{Body, Title};
[INFO] [stdout]   |                              ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `deleted_post`
[INFO] [stdout]    --> 2_idioms/2_1_type_safety/src/main.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     let deleted_post = post.publish().allow().delete();
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_deleted_post`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `state`
[INFO] [stdout]   --> 2_idioms/2_1_type_safety/src/main.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         state: S,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deny`
[INFO] [stdout]    --> 2_idioms/2_1_type_safety/src/main.rs:116:16
[INFO] [stdout]     |
[INFO] [stdout] 116 |         pub fn deny(self) -> Post<Deleted> {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `machine`
[INFO] [stdout]    --> 2_idioms/src/main.rs:396:10
[INFO] [stdout]     |
[INFO] [stdout] 396 |     let (machine, product, rest) = machine.get_product().unwrap();
[INFO] [stdout]     |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_machine`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `inset_coins`
[INFO] [stdout]    --> 2_idioms/src/main.rs:170:16
[INFO] [stdout]     |
[INFO] [stdout] 170 |         pub fn inset_coins<I: IntoIterator<Item = Coin>>(&mut self, coins: I) {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_vec`
[INFO] [stdout]   --> 1_concepts/1_1_default_clone_copy/src/main.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |         pub fn from_vec(vec: Vec<Point>) -> Polyline {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `code`
[INFO] [stdout]   --> 2_idioms/2_4_generic_in_type_out/src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     code: Cow<'code, str>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> 1_concepts/1_1_default_clone_copy/src/main.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |         pub fn len(&self) -> usize {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ab806b5f9ceaf4338be375a91e5f9bfe906f14af3c1c98fa7fe931aa0ad54549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab806b5f9ceaf4338be375a91e5f9bfe906f14af3c1c98fa7fe931aa0ad54549", kill_on_drop: false }`
[INFO] [stdout] ab806b5f9ceaf4338be375a91e5f9bfe906f14af3c1c98fa7fe931aa0ad54549