[INFO] fetching crate vars 0.2.0...
[INFO] checking vars-0.2.0 against master#c756124775121dea0e640652c5ee3c89e3dd0eb4 for pr-154971
[INFO] extracting crate vars 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate vars 0.2.0
[INFO] finished tweaking crates.io crate vars 0.2.0
[INFO] tweaked toml for crates.io crate vars 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate vars 0.2.0 on toolchain c756124775121dea0e640652c5ee3c89e3dd0eb4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 63 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.8.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vars_macro v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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_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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a08a6f68f3fe3925eaba0c4668c52aa0297f9bab8cd6e10cb8718b4b37c37b8
[INFO] running `Command { std: "docker" "start" "-a" "6a08a6f68f3fe3925eaba0c4668c52aa0297f9bab8cd6e10cb8718b4b37c37b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a08a6f68f3fe3925eaba0c4668c52aa0297f9bab8cd6e10cb8718b4b37c37b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a08a6f68f3fe3925eaba0c4668c52aa0297f9bab8cd6e10cb8718b4b37c37b8", kill_on_drop: false }`
[INFO] [stdout] 6a08a6f68f3fe3925eaba0c4668c52aa0297f9bab8cd6e10cb8718b4b37c37b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 045e93debaee1ed7e29b41db495024d127f76db95c6be217e0fa9a08aad24cb8
[INFO] running `Command { std: "docker" "start" "-a" "045e93debaee1ed7e29b41db495024d127f76db95c6be217e0fa9a08aad24cb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking anstyle v1.0.14
[INFO] [stderr]     Checking regex-syntax v0.8.10
[INFO] [stderr]     Checking itoa v1.0.18
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking clap_lex v1.1.0
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[INFO] [stderr]     Checking rayon v1.12.0
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[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking is-terminal v0.4.17
[INFO] [stderr]    Compiling vars_macro v0.1.0
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking oorandom v11.1.5
[INFO] [stderr]     Checking vars v0.2.0 (/opt/rustwide/workdir)
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[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]   --> tests/const_generic.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let array = ConArr { arr: [1,2] };
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Tuple` is never used
[INFO] [stdout]  --> tests/const_generic.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | trait Tuple {}
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Vars` is never used
[INFO] [stdout]  --> tests/const_generic.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | trait Vars<T: Tuple> {}
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `arr` is never read
[INFO] [stdout]  --> tests/const_generic.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct ConArr<const Len: usize = 3> {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 9 |     pub arr: [usize; Len],
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: const parameter `Len` should have an upper case name
[INFO] [stdout]  --> tests/const_generic.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct ConArr<const Len: usize = 3> {
[INFO] [stdout]   |                     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]   |
[INFO] [stdout] 8 - struct ConArr<const Len: usize = 3> {
[INFO] [stdout] 8 + struct ConArr<const LEN: usize = 3> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/tuple_iter_unsafe.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let mut tups = (1 as usize, 2 as usize,);
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TupleIterator` is never used
[INFO] [stdout]   --> tests/tuple_iter_unsafe.rs:45:7
[INFO] [stdout]    |
[INFO] [stdout] 45 | trait TupleIterator<T> {
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v1`
[INFO] [stdout]    --> tests/hcons_test.rs:245:13
[INFO] [stdout]     |
[INFO] [stdout] 245 |         let v1 = h.value();
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_v1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> tests/hcons_test.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |     let n = h.value();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HConsIterator` is never constructed
[INFO] [stdout]   --> tests/hcons_test.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct HConsIterator<V,R: UnCons<V>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tup`
[INFO] [stdout]   --> src/lib.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let tup = (1,2,3).uncons();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_tup`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/lib.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let a = (1,2,3).uncons();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/lib.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |         fn accept_vars(v: impl Vars<usize>) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `r` is assigned to, but never used
[INFO] [stdout]   --> src/lib.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut r = tup.uncons_mut();
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_r` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u_8`
[INFO] [stdout]   --> src/lib.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let u_8: &usize = &10;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_u_8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]   --> src/lib.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         r.1 = v;
[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: unused variable: `t`
[INFO] [stdout]   --> src/lib.rs:76:20
[INFO] [stdout]    |
[INFO] [stdout] 76 |         fn consume(t: (usize, (usize, ))) {
[INFO] [stdout]    |                    ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l1`
[INFO] [stdout]   --> src/lib.rs:90:18
[INFO] [stdout]    |
[INFO] [stdout] 90 |             let (l1, r1) = v.uncons();
[INFO] [stdout]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_l1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l2`
[INFO] [stdout]   --> src/lib.rs:91:18
[INFO] [stdout]    |
[INFO] [stdout] 91 |             let (l2, r2) = r1.uncons();
[INFO] [stdout]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_l2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l3`
[INFO] [stdout]   --> src/lib.rs:92:18
[INFO] [stdout]    |
[INFO] [stdout] 92 |             let (l3, r3) = r2.uncons();
[INFO] [stdout]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_l3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r3`
[INFO] [stdout]   --> src/lib.rs:92:22
[INFO] [stdout]    |
[INFO] [stdout] 92 |             let (l3, r3) = r2.uncons();
[INFO] [stdout]    |                      ^^ help: if this is intentional, prefix it with an underscore: `_r3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]   --> src/lib.rs:96:18
[INFO] [stdout]    |
[INFO] [stdout] 96 |             let (a1, a2) = (1, "str").uncons();
[INFO] [stdout]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]   --> src/lib.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 |             let (a1, a2) = (1, "str").uncons();
[INFO] [stdout]    |                      ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CnC` is never constructed
[INFO] [stdout]   --> src/lib.rs:66:16
[INFO] [stdout]    |
[INFO] [stdout] 66 |         struct CnC(usize);
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `consume` is never used
[INFO] [stdout]   --> src/lib.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 |         fn consume(t: (usize, (usize, ))) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 24.28s
[INFO] running `Command { std: "docker" "inspect" "045e93debaee1ed7e29b41db495024d127f76db95c6be217e0fa9a08aad24cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "045e93debaee1ed7e29b41db495024d127f76db95c6be217e0fa9a08aad24cb8", kill_on_drop: false }`
[INFO] [stdout] 045e93debaee1ed7e29b41db495024d127f76db95c6be217e0fa9a08aad24cb8
