[INFO] crate numberkit 0.1.0 is already in cache
[INFO] extracting crate numberkit 0.1.0 into work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/numberkit/0.1.0
[INFO] extracting crate numberkit 0.1.0 into work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/numberkit/0.1.0
[INFO] validating manifest of numberkit-0.1.0 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of numberkit-0.1.0 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing numberkit-0.1.0
[INFO] finished frobbing numberkit-0.1.0
[INFO] frobbed toml for numberkit-0.1.0 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/numberkit/0.1.0/Cargo.toml
[INFO] started frobbing numberkit-0.1.0
[INFO] finished frobbing numberkit-0.1.0
[INFO] frobbed toml for numberkit-0.1.0 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/numberkit/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking numberkit-0.1.0 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-1/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/numberkit/0.1.0:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 32edb9f2f673a823faedebcc174e20eae89f3351bb1e21da18cc3c517bed77a5
[INFO] running `"docker" "start" "-a" "32edb9f2f673a823faedebcc174e20eae89f3351bb1e21da18cc3c517bed77a5"`
[INFO] [stderr]     Checking numberkit v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `has_negative` is assigned to, but never used
[INFO] [stderr]   --> src/lib.rs:18:11
[INFO] [stderr]    |
[INFO] [stderr] 18 |   let mut has_negative = false;
[INFO] [stderr]    |           ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_has_negative` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `has_negative` is never read
[INFO] [stderr]   --> src/lib.rs:28:7
[INFO] [stderr]    |
[INFO] [stderr] 28 |       has_negative = true;
[INFO] [stderr]    |       ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `has_negative` is assigned to, but never used
[INFO] [stderr]   --> src/lib.rs:18:11
[INFO] [stderr]    |
[INFO] [stderr] 18 |   let mut has_negative = false;
[INFO] [stderr]    |           ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_has_negative` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `has_negative` is never read
[INFO] [stderr]   --> src/lib.rs:28:7
[INFO] [stderr]    |
[INFO] [stderr] 28 |       has_negative = true;
[INFO] [stderr]    |       ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `"docker" "inspect" "32edb9f2f673a823faedebcc174e20eae89f3351bb1e21da18cc3c517bed77a5"`
[INFO] running `"docker" "rm" "-f" "32edb9f2f673a823faedebcc174e20eae89f3351bb1e21da18cc3c517bed77a5"`
[INFO] [stdout] 32edb9f2f673a823faedebcc174e20eae89f3351bb1e21da18cc3c517bed77a5