[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-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/milesand/calculator-the-solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/milesand/calculator-the-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/milesand/calculator-the-solver" "work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/milesand/calculator-the-solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/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#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of milesand/calculator-the-solver on toolchain try#74092351c05ae61047b2be02024415546595e974
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-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-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/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-60174/sources/try#74092351c05ae61047b2be02024415546595e974/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/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking milesand/calculator-the-solver against try#74092351c05ae61047b2be02024415546595e974 for pr-60174
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60174/worker-3/try#74092351c05ae61047b2be02024415546595e974:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/milesand/calculator-the-solver:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+74092351c05ae61047b2be02024415546595e974-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 656fb81f8371b77af1c8253536cb72536a679965d7286d74192e9fb977b215d7
[INFO] running `"docker" "start" "-a" "656fb81f8371b77af1c8253536cb72536a679965d7286d74192e9fb977b215d7"`
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking num-complex v0.1.41
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking num-bigint v0.1.41
[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: 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: 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 8.02s
[INFO] running `"docker" "inspect" "656fb81f8371b77af1c8253536cb72536a679965d7286d74192e9fb977b215d7"`
[INFO] running `"docker" "rm" "-f" "656fb81f8371b77af1c8253536cb72536a679965d7286d74192e9fb977b215d7"`
[INFO] [stdout] 656fb81f8371b77af1c8253536cb72536a679965d7286d74192e9fb977b215d7