[INFO] updating cached repository wisechengyi/rust_tar_repro
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wisechengyi/rust_tar_repro
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wisechengyi/rust_tar_repro" "work/ex/beta-1.38-1/sources/1.37.0/gh/wisechengyi/rust_tar_repro"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wisechengyi/rust_tar_repro'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wisechengyi/rust_tar_repro" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wisechengyi/rust_tar_repro"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wisechengyi/rust_tar_repro'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b724825429f3ebb16d1e879dab39885a92173148
[INFO] sha for GitHub repo wisechengyi/rust_tar_repro: b724825429f3ebb16d1e879dab39885a92173148
[INFO] validating manifest of wisechengyi/rust_tar_repro 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 wisechengyi/rust_tar_repro 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 wisechengyi/rust_tar_repro
[INFO] finished frobbing wisechengyi/rust_tar_repro
[INFO] frobbed toml for wisechengyi/rust_tar_repro written to work/ex/beta-1.38-1/sources/1.37.0/gh/wisechengyi/rust_tar_repro/Cargo.toml
[INFO] started frobbing wisechengyi/rust_tar_repro
[INFO] finished frobbing wisechengyi/rust_tar_repro
[INFO] frobbed toml for wisechengyi/rust_tar_repro written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wisechengyi/rust_tar_repro/Cargo.toml
[INFO] crate wisechengyi/rust_tar_repro 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 wisechengyi/rust_tar_repro against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wisechengyi/rust_tar_repro:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 9ef72cc419a1936c66eeb5527780364b4d9bd9d7753f5e9a28f1dce1daf1df5a
[INFO] running `"docker" "start" "-a" "9ef72cc419a1936c66eeb5527780364b4d9bd9d7753f5e9a28f1dce1daf1df5a"`
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.3
[INFO] [stderr]    Compiling tar v0.4.19
[INFO] [stderr]    Compiling flate2 v1.0.4
[INFO] [stderr]    Compiling tar_api v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/tar_api.rs:29:3
[INFO] [stderr]    |
[INFO] [stderr] 29 |   tar.finish();
[INFO] [stderr]    |   ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `value_t`
[INFO] [stderr]  --> src/main.rs:5:34
[INFO] [stderr]   |
[INFO] [stderr] 5 | use clap::{App, Arg, SubCommand, value_t};
[INFO] [stderr]   |                                  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> src/main.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sub_matches`
[INFO] [stderr]   --> src/main.rs:47:15
[INFO] [stderr]    |
[INFO] [stderr] 47 |   if let Some(sub_matches) = matches.subcommand_matches("tar") {
[INFO] [stderr]    |               ^^^^^^^^^^^ help: consider prefixing with an underscore: `_sub_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.93s
[INFO] running `"docker" "inspect" "9ef72cc419a1936c66eeb5527780364b4d9bd9d7753f5e9a28f1dce1daf1df5a"`
[INFO] running `"docker" "rm" "-f" "9ef72cc419a1936c66eeb5527780364b4d9bd9d7753f5e9a28f1dce1daf1df5a"`
[INFO] [stdout] 9ef72cc419a1936c66eeb5527780364b4d9bd9d7753f5e9a28f1dce1daf1df5a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wisechengyi/rust_tar_repro:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b90832691b02256f711652a82507edc24f954ab68932afaa7f534a8033b4d497
[INFO] running `"docker" "start" "-a" "b90832691b02256f711652a82507edc24f954ab68932afaa7f534a8033b4d497"`
[INFO] [stderr]    Compiling tar_api v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `value_t`
[INFO] [stderr]  --> src/main.rs:5:34
[INFO] [stderr]   |
[INFO] [stderr] 5 | use clap::{App, Arg, SubCommand, value_t};
[INFO] [stderr]   |                                  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> src/main.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/tar_api.rs:29:3
[INFO] [stderr]    |
[INFO] [stderr] 29 |   tar.finish();
[INFO] [stderr]    |   ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sub_matches`
[INFO] [stderr]   --> src/main.rs:47:15
[INFO] [stderr]    |
[INFO] [stderr] 47 |   if let Some(sub_matches) = matches.subcommand_matches("tar") {
[INFO] [stderr]    |               ^^^^^^^^^^^ help: consider prefixing with an underscore: `_sub_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `"docker" "inspect" "b90832691b02256f711652a82507edc24f954ab68932afaa7f534a8033b4d497"`
[INFO] running `"docker" "rm" "-f" "b90832691b02256f711652a82507edc24f954ab68932afaa7f534a8033b4d497"`
[INFO] [stdout] b90832691b02256f711652a82507edc24f954ab68932afaa7f534a8033b4d497
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wisechengyi/rust_tar_repro:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 157fb888598d15980addce699cc128b2bc034b93cbaf3636b0f93fb4af1335be
[INFO] running `"docker" "start" "-a" "157fb888598d15980addce699cc128b2bc034b93cbaf3636b0f93fb4af1335be"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tar_api-79b8ded89b667b4e
[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] [stderr]      Running /opt/crater/target/debug/deps/rust_tar-1a2cd893db4ece75
[INFO] [stderr]    Doc-tests tar_api
[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] [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" "157fb888598d15980addce699cc128b2bc034b93cbaf3636b0f93fb4af1335be"`
[INFO] running `"docker" "rm" "-f" "157fb888598d15980addce699cc128b2bc034b93cbaf3636b0f93fb4af1335be"`
[INFO] [stdout] 157fb888598d15980addce699cc128b2bc034b93cbaf3636b0f93fb4af1335be