[INFO] updating cached repository nilbold/spellthief
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] warning: no common commits
[INFO] [stderr] From git://github.com/nilbold/spellthief
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nilbold/spellthief" "work/ex/beta-1.38-1/sources/1.37.0/gh/nilbold/spellthief"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nilbold/spellthief'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nilbold/spellthief" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nilbold/spellthief"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nilbold/spellthief'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1681db91dfabdd3800bde80235fe71f1bcbbf19e
[INFO] sha for GitHub repo nilbold/spellthief: 1681db91dfabdd3800bde80235fe71f1bcbbf19e
[INFO] validating manifest of nilbold/spellthief 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 nilbold/spellthief 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 nilbold/spellthief
[INFO] finished frobbing nilbold/spellthief
[INFO] frobbed toml for nilbold/spellthief written to work/ex/beta-1.38-1/sources/1.37.0/gh/nilbold/spellthief/Cargo.toml
[INFO] started frobbing nilbold/spellthief
[INFO] finished frobbing nilbold/spellthief
[INFO] frobbed toml for nilbold/spellthief written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nilbold/spellthief/Cargo.toml
[INFO] crate nilbold/spellthief 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing nilbold/spellthief 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-5/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/nilbold/spellthief:/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] 33ab5e141a875bab243e518283bad8c0ed5002891b6c25de022960703a32bd5a
[INFO] running `"docker" "start" "-a" "33ab5e141a875bab243e518283bad8c0ed5002891b6c25de022960703a32bd5a"`
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling env_logger v0.6.0
[INFO] [stderr]    Compiling pretty_env_logger v0.3.0
[INFO] [stderr]    Compiling spellthief v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant is never constructed: `Io`
[INFO] [stderr]   --> src/error.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 |    Io(io::Error),
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.83s
[INFO] running `"docker" "inspect" "33ab5e141a875bab243e518283bad8c0ed5002891b6c25de022960703a32bd5a"`
[INFO] running `"docker" "rm" "-f" "33ab5e141a875bab243e518283bad8c0ed5002891b6c25de022960703a32bd5a"`
[INFO] [stdout] 33ab5e141a875bab243e518283bad8c0ed5002891b6c25de022960703a32bd5a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/nilbold/spellthief:/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] 471037cdb47b4b9e176a49aca9a360008de0952655f48839d1ae649a0d5eb8c5
[INFO] running `"docker" "start" "-a" "471037cdb47b4b9e176a49aca9a360008de0952655f48839d1ae649a0d5eb8c5"`
[INFO] [stderr]    Compiling spellthief v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant is never constructed: `Io`
[INFO] [stderr]   --> src/error.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 |    Io(io::Error),
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "471037cdb47b4b9e176a49aca9a360008de0952655f48839d1ae649a0d5eb8c5"`
[INFO] running `"docker" "rm" "-f" "471037cdb47b4b9e176a49aca9a360008de0952655f48839d1ae649a0d5eb8c5"`
[INFO] [stdout] 471037cdb47b4b9e176a49aca9a360008de0952655f48839d1ae649a0d5eb8c5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/nilbold/spellthief:/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] ad0f65805aca4b85294a435e7074cc66f296386d96f6c9fa13f101bd2fffdec4
[INFO] running `"docker" "start" "-a" "ad0f65805aca4b85294a435e7074cc66f296386d96f6c9fa13f101bd2fffdec4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/spellthief-6832a46f8a090789
[INFO] [stderr]      Running /opt/crater/target/debug/deps/spellthief-7ccfda3d80b7551d
[INFO] [stderr]    Doc-tests spellthief
[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] [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" "ad0f65805aca4b85294a435e7074cc66f296386d96f6c9fa13f101bd2fffdec4"`
[INFO] running `"docker" "rm" "-f" "ad0f65805aca4b85294a435e7074cc66f296386d96f6c9fa13f101bd2fffdec4"`
[INFO] [stdout] ad0f65805aca4b85294a435e7074cc66f296386d96f6c9fa13f101bd2fffdec4