[INFO] fetching crate cas-compute 0.2.0...
[INFO] checking cas-compute-0.2.0 against try#e622d8d7bed4f2668d446e06c6c1436ecae15796 for pr-156776
[INFO] extracting crate cas-compute 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate cas-compute 0.2.0
[INFO] finished tweaking crates.io crate cas-compute 0.2.0
[INFO] tweaked toml for crates.io crate cas-compute 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cas-compute 0.2.0 on toolchain e622d8d7bed4f2668d446e06c6c1436ecae15796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e622d8d7bed4f2668d446e06c6c1436ecae15796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cas-compute 0.2.0 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" "+e622d8d7bed4f2668d446e06c6c1436ecae15796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+e622d8d7bed4f2668d446e06c6c1436ecae15796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 049588fab240e1a6e9857251bbcda74f3d99c09b46867e7c1cb35d9a2834625f
[INFO] running `Command { std: "docker" "start" "-a" "049588fab240e1a6e9857251bbcda74f3d99c09b46867e7c1cb35d9a2834625f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "049588fab240e1a6e9857251bbcda74f3d99c09b46867e7c1cb35d9a2834625f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "049588fab240e1a6e9857251bbcda74f3d99c09b46867e7c1cb35d9a2834625f", kill_on_drop: false }`
[INFO] [stdout] 049588fab240e1a6e9857251bbcda74f3d99c09b46867e7c1cb35d9a2834625f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+e622d8d7bed4f2668d446e06c6c1436ecae15796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0074b9904a0cadd9d1919fe08ee6528beae3cb70c8f9c43fc48f8ffe25d627fe
[INFO] running `Command { std: "docker" "start" "-a" "0074b9904a0cadd9d1919fe08ee6528beae3cb70c8f9c43fc48f8ffe25d627fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.2
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling rug v1.24.1
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking levenshtein v1.0.5
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking ariadne v0.2.0
[INFO] [stderr]     Checking assert_float_eq v1.1.3
[INFO] [stderr]     Checking pretty_assertions v1.4.0
[INFO] [stderr]     Checking cas-error v0.2.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking getrandom v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling logos-codegen v0.14.4
[INFO] [stderr]    Compiling cas-attrs v0.2.0
[INFO] [stderr]    Compiling logos-derive v0.14.4
[INFO] [stderr]     Checking logos v0.14.4
[INFO] [stderr]     Checking cas-parser v0.2.0
[INFO] [stderr]     Checking cas-compute v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::symbolic::simplify`
[INFO] [stdout]    --> src/symbolic/expr/mod.rs:869:9
[INFO] [stdout]     |
[INFO] [stdout] 869 |     use crate::symbolic::simplify;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbolic/simplify/mod.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut current_complexity = complexity(&expr);
[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: unused variable: `current_complexity`
[INFO] [stdout]   --> src/symbolic/simplify/mod.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut current_complexity = complexity(&expr);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_complexity`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `changed_in_this_pass` is assigned to, but never used
[INFO] [stdout]   --> src/symbolic/simplify/mod.rs:92:25
[INFO] [stdout]    |
[INFO] [stdout] 92 |                     let mut changed_in_this_pass = false;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_changed_in_this_pass` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `changed_in_this_pass` is never read
[INFO] [stdout]    --> src/symbolic/simplify/mod.rs:83:13
[INFO] [stdout]     |
[INFO] [stdout]  83 |             changed_in_this_pass = true;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 110 |                     changed_in_this_pass |= result.1;
[INFO] [stdout]     |                     -------------------------------- `changed_in_this_pass` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `changed_in_this_pass` is never read
[INFO] [stdout]   --> src/symbolic/simplify/mod.rs:96:25
[INFO] [stdout]    |
[INFO] [stdout] 96 |                         changed_in_this_pass |= result.1;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/numerical/value.rs:246:16
[INFO] [stdout]     |
[INFO] [stdout] 246 |     pub fn fmt(&self, options: FormatOptions) -> ValueFormatter {
[INFO] [stdout]     |                ^^^^^ the lifetime is elided here ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 246 |     pub fn fmt(&self, options: FormatOptions) -> ValueFormatter<'_> {
[INFO] [stdout]     |                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbolic/expr/mod.rs:422:28
[INFO] [stdout]     |
[INFO] [stdout] 422 |     pub fn post_order_iter(&self) -> ExprIter {
[INFO] [stdout]     |                            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 422 |     pub fn post_order_iter(&self) -> ExprIter<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/symbolic/simplify/mod.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut current_complexity = complexity(&expr);
[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: unused variable: `current_complexity`
[INFO] [stdout]   --> src/symbolic/simplify/mod.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut current_complexity = complexity(&expr);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_complexity`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `changed_in_this_pass` is assigned to, but never used
[INFO] [stdout]   --> src/symbolic/simplify/mod.rs:92:25
[INFO] [stdout]    |
[INFO] [stdout] 92 |                     let mut changed_in_this_pass = false;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_changed_in_this_pass` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `changed_in_this_pass` is never read
[INFO] [stdout]    --> src/symbolic/simplify/mod.rs:83:13
[INFO] [stdout]     |
[INFO] [stdout]  83 |             changed_in_this_pass = true;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 110 |                     changed_in_this_pass |= result.1;
[INFO] [stdout]     |                     -------------------------------- `changed_in_this_pass` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `changed_in_this_pass` is never read
[INFO] [stdout]   --> src/symbolic/simplify/mod.rs:96:25
[INFO] [stdout]    |
[INFO] [stdout] 96 |                         changed_in_this_pass |= result.1;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/numerical/value.rs:246:16
[INFO] [stdout]     |
[INFO] [stdout] 246 |     pub fn fmt(&self, options: FormatOptions) -> ValueFormatter {
[INFO] [stdout]     |                ^^^^^ the lifetime is elided here ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 246 |     pub fn fmt(&self, options: FormatOptions) -> ValueFormatter<'_> {
[INFO] [stdout]     |                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/symbolic/expr/mod.rs:422:28
[INFO] [stdout]     |
[INFO] [stdout] 422 |     pub fn post_order_iter(&self) -> ExprIter {
[INFO] [stdout]     |                            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 422 |     pub fn post_order_iter(&self) -> ExprIter<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5m 02s
[INFO] running `Command { std: "docker" "inspect" "0074b9904a0cadd9d1919fe08ee6528beae3cb70c8f9c43fc48f8ffe25d627fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0074b9904a0cadd9d1919fe08ee6528beae3cb70c8f9c43fc48f8ffe25d627fe", kill_on_drop: false }`
[INFO] [stdout] 0074b9904a0cadd9d1919fe08ee6528beae3cb70c8f9c43fc48f8ffe25d627fe
