[INFO] cloning repository https://github.com/ShisoftResearch/Nebuchadnezzar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ShisoftResearch/Nebuchadnezzar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShisoftResearch%2FNebuchadnezzar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShisoftResearch%2FNebuchadnezzar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e511a64158a4f99edc952aa9eb8106be8dfafc7f
[INFO] checking ShisoftResearch/Nebuchadnezzar against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShisoftResearch%2FNebuchadnezzar" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ShisoftResearch/Nebuchadnezzar on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ShisoftResearch/Nebuchadnezzar
[INFO] finished tweaking git repo https://github.com/ShisoftResearch/Nebuchadnezzar
[INFO] tweaked toml for git repo https://github.com/ShisoftResearch/Nebuchadnezzar written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ShisoftResearch/Nebuchadnezzar already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/shisoft/bifrost`
[INFO] [stderr]     Updating git repository `https://github.com/ShisoftResearch/Dovahkiin`
[INFO] [stderr]     Updating git repository `https://github.com/ShisoftResearch/Hermes.git`
[INFO] [stderr]     Updating git repository `https://github.com/ShisoftResearch/Lightning.git`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a027c45a977cbbe33d93924c952392e1f9ac223f7075443c0532fb5556aa1a4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8a027c45a977cbbe33d93924c952392e1f9ac223f7075443c0532fb5556aa1a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a027c45a977cbbe33d93924c952392e1f9ac223f7075443c0532fb5556aa1a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a027c45a977cbbe33d93924c952392e1f9ac223f7075443c0532fb5556aa1a4", kill_on_drop: false }`
[INFO] [stdout] 8a027c45a977cbbe33d93924c952392e1f9ac223f7075443c0532fb5556aa1a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15347bf4deae42e361f8cb007066042f1b7640f58a705f7a4f1e728a7c8845ce
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "15347bf4deae42e361f8cb007066042f1b7640f58a705f7a4f1e728a7c8845ce", kill_on_drop: false }`
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[INFO] [stderr]     Checking bifrost_hasher v0.1.0 (https://github.com/shisoft/bifrost?branch=develop#0c2cb392)
[INFO] [stderr]    Compiling bifrost_plugins v0.1.0 (https://github.com/shisoft/bifrost?branch=develop#0c2cb392)
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling futures-macro v0.3.5
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[INFO] [stderr]     Checking lightning v0.2.0 (https://github.com/ShisoftResearch/Lightning.git?branch=develop#69d33fcc)
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[INFO] [stderr]     Checking bifrost v0.1.0 (https://github.com/shisoft/bifrost?branch=develop#0c2cb392)
[INFO] [stderr]     Checking hermes v0.1.0 (https://github.com/ShisoftResearch/Hermes.git#200255cb)
[INFO] [stderr]     Checking dovahkiin v0.1.0 (https://github.com/ShisoftResearch/Dovahkiin?branch=develop#ab025ab9)
[INFO] [stderr]     Checking neb v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]   --> src/ram/cell.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::index::builder::IndexComps::Vectorized`
[INFO] [stdout]  --> src/index/builder.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::index::builder::IndexComps::Vectorized;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smallvec::SmallVec`
[INFO] [stdout]  --> src/index/builder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use smallvec::SmallVec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::client::AsyncClient`
[INFO] [stdout]  --> src/server/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::client::AsyncClient;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]   --> src/ram/cell.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::index::builder::IndexComps::Vectorized`
[INFO] [stdout]  --> src/index/builder.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::index::builder::IndexComps::Vectorized;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smallvec::SmallVec`
[INFO] [stdout]  --> src/index/builder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use smallvec::SmallVec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `field_id`
[INFO] [stdout]   --> src/index/builder.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let field_id = hash_str(&index.fields);
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_field_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ranged`
[INFO] [stdout]   --> src/index/builder.rs:57:35
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 IndexMeta::Ranged(ranged) => {}
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ranged`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old_indices`
[INFO] [stdout]   --> src/index/builder.rs:51:53
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn ensure_indices(cell: &Cell, schema: &Schema, old_indices: Option<Vec<IndexRes>>) {
[INFO] [stdout]    |                                                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_indices`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/index/builder.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |             for val in array {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `field_id`
[INFO] [stdout]   --> src/index/builder.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let field_id = hash_str(&index.fields);
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_field_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ranged`
[INFO] [stdout]   --> src/index/builder.rs:57:35
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 IndexMeta::Ranged(ranged) => {}
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ranged`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old_indices`
[INFO] [stdout]   --> src/index/builder.rs:51:53
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn ensure_indices(cell: &Cell, schema: &Schema, old_indices: Option<Vec<IndexRes>>) {
[INFO] [stdout]    |                                                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_indices`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/index/builder.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |             for val in array {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `key`
[INFO] [stdout]   --> src/index/builder.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     key: EntryKey,
[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]   --> src/index/builder.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     id: Id,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cell_id`
[INFO] [stdout]   --> src/index/builder.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     cell_id: Id,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `feature`
[INFO] [stdout]   --> src/index/builder.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     feature: Feature,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data_width`
[INFO] [stdout]   --> src/index/builder.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     data_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cell_ver`
[INFO] [stdout]   --> src/index/builder.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     cell_ver: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `key_with_id`
[INFO] [stdout]   --> src/index/trees.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn key_with_id(key: &mut EntryKey, id: &Id) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `key_prefixed`
[INFO] [stdout]   --> src/index/trees.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn key_prefixed(prefix: &EntryKey, x: &EntryKey) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `key`
[INFO] [stdout]   --> src/index/builder.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     key: EntryKey,
[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]   --> src/index/builder.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     id: Id,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cell_id`
[INFO] [stdout]   --> src/index/builder.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     cell_id: Id,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `feature`
[INFO] [stdout]   --> src/index/builder.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     feature: Feature,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data_width`
[INFO] [stdout]   --> src/index/builder.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     data_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cell_ver`
[INFO] [stdout]   --> src/index/builder.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     cell_ver: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `key_prefixed`
[INFO] [stdout]   --> src/index/trees.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn key_prefixed(prefix: &EntryKey, x: &EntryKey) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 48s
[INFO] running `Command { std: "docker" "inspect" "15347bf4deae42e361f8cb007066042f1b7640f58a705f7a4f1e728a7c8845ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15347bf4deae42e361f8cb007066042f1b7640f58a705f7a4f1e728a7c8845ce", kill_on_drop: false }`
[INFO] [stdout] 15347bf4deae42e361f8cb007066042f1b7640f58a705f7a4f1e728a7c8845ce