[INFO] updating cached repository milesand/calculator-the-solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/milesand/calculator-the-solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/milesand/calculator-the-solver" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/milesand/calculator-the-solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/milesand/calculator-the-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/milesand/calculator-the-solver" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/milesand/calculator-the-solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/milesand/calculator-the-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] aa074792688f3ccc44a51a3e5b7af26239e9751d
[INFO] sha for GitHub repo milesand/calculator-the-solver: aa074792688f3ccc44a51a3e5b7af26239e9751d
[INFO] validating manifest of milesand/calculator-the-solver on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of milesand/calculator-the-solver on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing milesand/calculator-the-solver
[INFO] finished frobbing milesand/calculator-the-solver
[INFO] frobbed toml for milesand/calculator-the-solver written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/milesand/calculator-the-solver/Cargo.toml
[INFO] started frobbing milesand/calculator-the-solver
[INFO] finished frobbing milesand/calculator-the-solver
[INFO] frobbed toml for milesand/calculator-the-solver written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/milesand/calculator-the-solver/Cargo.toml
[INFO] crate milesand/calculator-the-solver already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking milesand/calculator-the-solver against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/milesand/calculator-the-solver:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7de02deb261ef52497e7d3aee9089680613de9c22b8811c8d9d391e8b9b3f896
[INFO] running `"docker" "start" "-a" "7de02deb261ef52497e7d3aee9089680613de9c22b8811c8d9d391e8b9b3f896"`
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking num-bigint v0.1.41
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking regex v0.2.5
[INFO] [stderr]     Checking num-rational v0.1.41
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking calculator-the-solver v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `OpKind` is imported redundantly
[INFO] [stderr]    --> src/op.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / enum OpKind {
[INFO] [stderr] 18  | |     Add(i32),
[INFO] [stderr] 19  | |     Mul(i32),
[INFO] [stderr] 20  | |     Div(i32),
[INFO] [stderr] ...   |
[INFO] [stderr] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stderr] 28  | | }
[INFO] [stderr]     | |_- the item `OpKind` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 102 |           use self::OpKind;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Op` is imported redundantly
[INFO] [stderr]    --> src/op.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 12  | / pub struct Op {
[INFO] [stderr] 13  | |     inner: OpKind,
[INFO] [stderr] 14  | | }
[INFO] [stderr]     | |_- the item `Op` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 195 |           use self::Op;
[INFO] [stderr]     |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `OpKind` is imported redundantly
[INFO] [stderr]    --> src/op.rs:247:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / enum OpKind {
[INFO] [stderr] 18  | |     Add(i32),
[INFO] [stderr] 19  | |     Mul(i32),
[INFO] [stderr] 20  | |     Div(i32),
[INFO] [stderr] ...   |
[INFO] [stderr] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stderr] 28  | | }
[INFO] [stderr]     | |_- the item `OpKind` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 247 |           use self::OpKind;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/op.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 | /         lazy_static! {
[INFO] [stderr] 198 | |             static ref RPC_PATTERN: Regex = Regex::new(r"(\d+)=>(\d+)").unwrap();
[INFO] [stderr] 199 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: the item `OpKind` is imported redundantly
[INFO] [stderr]    --> src/op.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / enum OpKind {
[INFO] [stderr] 18  | |     Add(i32),
[INFO] [stderr] 19  | |     Mul(i32),
[INFO] [stderr] 20  | |     Div(i32),
[INFO] [stderr] ...   |
[INFO] [stderr] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stderr] 28  | | }
[INFO] [stderr]     | |_- the item `OpKind` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 102 |           use self::OpKind;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Op` is imported redundantly
[INFO] [stderr]    --> src/op.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 12  | / pub struct Op {
[INFO] [stderr] 13  | |     inner: OpKind,
[INFO] [stderr] 14  | | }
[INFO] [stderr]     | |_- the item `Op` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 195 |           use self::Op;
[INFO] [stderr]     |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `OpKind` is imported redundantly
[INFO] [stderr]    --> src/op.rs:247:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / enum OpKind {
[INFO] [stderr] 18  | |     Add(i32),
[INFO] [stderr] 19  | |     Mul(i32),
[INFO] [stderr] 20  | |     Div(i32),
[INFO] [stderr] ...   |
[INFO] [stderr] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stderr] 28  | | }
[INFO] [stderr]     | |_- the item `OpKind` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 247 |           use self::OpKind;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/op.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 | /         lazy_static! {
[INFO] [stderr] 198 | |             static ref RPC_PATTERN: Regex = Regex::new(r"(\d+)=>(\d+)").unwrap();
[INFO] [stderr] 199 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(option_filter)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(option_filter)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.68s
[INFO] running `"docker" "inspect" "7de02deb261ef52497e7d3aee9089680613de9c22b8811c8d9d391e8b9b3f896"`
[INFO] running `"docker" "rm" "-f" "7de02deb261ef52497e7d3aee9089680613de9c22b8811c8d9d391e8b9b3f896"`
[INFO] [stdout] 7de02deb261ef52497e7d3aee9089680613de9c22b8811c8d9d391e8b9b3f896