[INFO] updating cached repository serisow/todo.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/serisow/todo.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/serisow/todo.rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/serisow/todo.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/serisow/todo.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/serisow/todo.rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/serisow/todo.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/serisow/todo.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f73a90f18e4d84fc12ca6315a1064c2a9346c625
[INFO] sha for GitHub repo serisow/todo.rs: f73a90f18e4d84fc12ca6315a1064c2a9346c625
[INFO] validating manifest of serisow/todo.rs on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of serisow/todo.rs on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing serisow/todo.rs
[INFO] finished frobbing serisow/todo.rs
[INFO] frobbed toml for serisow/todo.rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/serisow/todo.rs/Cargo.toml
[INFO] started frobbing serisow/todo.rs
[INFO] finished frobbing serisow/todo.rs
[INFO] frobbed toml for serisow/todo.rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/serisow/todo.rs/Cargo.toml
[INFO] crate serisow/todo.rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing serisow/todo.rs against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/serisow/todo.rs:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5afee907a74440ff8da6b7d8e09f834e8a137c6c615b1c09592f18673ee43a54
[INFO] running `"docker" "start" "-a" "5afee907a74440ff8da6b7d8e09f834e8a137c6c615b1c09592f18673ee43a54"`
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling todo_list v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]  --> src/user.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct User<'a> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/user.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn new(full_name: &'a str) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.30s
[INFO] running `"docker" "inspect" "5afee907a74440ff8da6b7d8e09f834e8a137c6c615b1c09592f18673ee43a54"`
[INFO] running `"docker" "rm" "-f" "5afee907a74440ff8da6b7d8e09f834e8a137c6c615b1c09592f18673ee43a54"`
[INFO] [stdout] 5afee907a74440ff8da6b7d8e09f834e8a137c6c615b1c09592f18673ee43a54
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/serisow/todo.rs:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9399e1500f71134ded7a0f046d89241543db97b118677e165ee89f078b4e45ad
[INFO] running `"docker" "start" "-a" "9399e1500f71134ded7a0f046d89241543db97b118677e165ee89f078b4e45ad"`
[INFO] [stderr]    Compiling todo_list v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `PathBuf`
[INFO] [stderr]  --> src/tests.rs:6:21
[INFO] [stderr]   |
[INFO] [stderr] 6 |     use std::path::{PathBuf, Path};
[INFO] [stderr]   |                     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]  --> src/user.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct User<'a> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/user.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn new(full_name: &'a str) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `"docker" "inspect" "9399e1500f71134ded7a0f046d89241543db97b118677e165ee89f078b4e45ad"`
[INFO] running `"docker" "rm" "-f" "9399e1500f71134ded7a0f046d89241543db97b118677e165ee89f078b4e45ad"`
[INFO] [stdout] 9399e1500f71134ded7a0f046d89241543db97b118677e165ee89f078b4e45ad
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/serisow/todo.rs:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] e705f7155fec27b2663d1c96fa1feb560737d646192b15f487cc70f6aec1d58c
[INFO] running `"docker" "start" "-a" "e705f7155fec27b2663d1c96fa1feb560737d646192b15f487cc70f6aec1d58c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/todo_list-b586547a698673ad
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::tests::test_new_todo_label_and_done ... ok
[INFO] [stdout] test tests::tests::test_todo_list ... ok
[INFO] [stdout] test tests::tests::test_set_done ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests todo_list
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e705f7155fec27b2663d1c96fa1feb560737d646192b15f487cc70f6aec1d58c"`
[INFO] running `"docker" "rm" "-f" "e705f7155fec27b2663d1c96fa1feb560737d646192b15f487cc70f6aec1d58c"`
[INFO] [stdout] e705f7155fec27b2663d1c96fa1feb560737d646192b15f487cc70f6aec1d58c