[INFO] updating cached repository flomonster/my-git
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/flomonster/my-git
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/flomonster/my-git" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/flomonster/my-git"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/flomonster/my-git'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/flomonster/my-git" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/flomonster/my-git"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/flomonster/my-git'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8004d8b1b4c3a2a12b0553e204f121a5522ff54f
[INFO] sha for GitHub repo flomonster/my-git: 8004d8b1b4c3a2a12b0553e204f121a5522ff54f
[INFO] validating manifest of flomonster/my-git 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 flomonster/my-git 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 flomonster/my-git
[INFO] finished frobbing flomonster/my-git
[INFO] frobbed toml for flomonster/my-git written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/flomonster/my-git/Cargo.toml
[INFO] started frobbing flomonster/my-git
[INFO] finished frobbing flomonster/my-git
[INFO] frobbed toml for flomonster/my-git written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/flomonster/my-git/Cargo.toml
[INFO] crate flomonster/my-git 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 flomonster/my-git against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-5/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/flomonster/my-git:/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] 39a065b99002ad08b1b6f1fafca6b87d5d63aa91ec897fa3e7347e5f4b08e44c
[INFO] running `"docker" "start" "-a" "39a065b99002ad08b1b6f1fafca6b87d5d63aa91ec897fa3e7347e5f4b08e44c"`
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking dirs-sys v0.3.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking dirs v2.0.1
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking my_git v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `crate::utils`
[INFO] [stderr]   --> src/objects/mod.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |     use crate::utils;
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chrono::DateTime`
[INFO] [stderr]   --> src/objects/mod.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     use chrono::DateTime;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/objects/mod.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |         let mut commit = Commit::new(
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/objects/tree.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn add(&mut self, entry: TreeEntry) -> &mut Tree {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/objects/commit.rs:181:13
[INFO] [stderr]     |
[INFO] [stderr] 181 |         let mut commit = Commit::new(
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/objects/tree.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn add(&mut self, entry: TreeEntry) -> &mut Tree {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.88s
[INFO] running `"docker" "inspect" "39a065b99002ad08b1b6f1fafca6b87d5d63aa91ec897fa3e7347e5f4b08e44c"`
[INFO] running `"docker" "rm" "-f" "39a065b99002ad08b1b6f1fafca6b87d5d63aa91ec897fa3e7347e5f4b08e44c"`
[INFO] [stdout] 39a065b99002ad08b1b6f1fafca6b87d5d63aa91ec897fa3e7347e5f4b08e44c