[INFO] updating cached repository jiegec/classroom-helper
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jiegec/classroom-helper
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jiegec/classroom-helper" "work/ex/beta-1.38-1/sources/1.37.0/gh/jiegec/classroom-helper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jiegec/classroom-helper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jiegec/classroom-helper" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jiegec/classroom-helper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jiegec/classroom-helper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7918d8c8525d6a6f9bf530d70bc977731614e3dc
[INFO] sha for GitHub repo jiegec/classroom-helper: 7918d8c8525d6a6f9bf530d70bc977731614e3dc
[INFO] validating manifest of jiegec/classroom-helper 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 jiegec/classroom-helper 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 jiegec/classroom-helper
[INFO] finished frobbing jiegec/classroom-helper
[INFO] frobbed toml for jiegec/classroom-helper written to work/ex/beta-1.38-1/sources/1.37.0/gh/jiegec/classroom-helper/Cargo.toml
[INFO] started frobbing jiegec/classroom-helper
[INFO] finished frobbing jiegec/classroom-helper
[INFO] frobbed toml for jiegec/classroom-helper written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jiegec/classroom-helper/Cargo.toml
[INFO] crate jiegec/classroom-helper 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 jiegec/classroom-helper 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jiegec/classroom-helper:/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] f131fcf9a9ea4a7f0ff4a545815a901e989b6a3fe832609b40b1652659a0e902
[INFO] running `"docker" "start" "-a" "f131fcf9a9ea4a7f0ff4a545815a901e989b6a3fe832609b40b1652659a0e902"`
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling fs_extra v1.1.0
[INFO] [stderr]    Compiling serde_test v0.8.23
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling regex-automata v0.1.7
[INFO] [stderr]    Compiling tui v0.5.1
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]    Compiling serde-hjson v0.8.2
[INFO] [stderr]    Compiling bstr v0.2.1
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling config v0.9.3
[INFO] [stderr]    Compiling classroom-helper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 58.66s
[INFO] running `"docker" "inspect" "f131fcf9a9ea4a7f0ff4a545815a901e989b6a3fe832609b40b1652659a0e902"`
[INFO] running `"docker" "rm" "-f" "f131fcf9a9ea4a7f0ff4a545815a901e989b6a3fe832609b40b1652659a0e902"`
[INFO] [stdout] f131fcf9a9ea4a7f0ff4a545815a901e989b6a3fe832609b40b1652659a0e902
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jiegec/classroom-helper:/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] f797c612611b3ba2bff7f6ed69ca020068d79f224b9e89e1db2cc2b9d097b07c
[INFO] running `"docker" "start" "-a" "f797c612611b3ba2bff7f6ed69ca020068d79f224b9e89e1db2cc2b9d097b07c"`
[INFO] [stderr]    Compiling classroom-helper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "f797c612611b3ba2bff7f6ed69ca020068d79f224b9e89e1db2cc2b9d097b07c"`
[INFO] running `"docker" "rm" "-f" "f797c612611b3ba2bff7f6ed69ca020068d79f224b9e89e1db2cc2b9d097b07c"`
[INFO] [stdout] f797c612611b3ba2bff7f6ed69ca020068d79f224b9e89e1db2cc2b9d097b07c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jiegec/classroom-helper:/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] cd764e49170d26450b559dd8eaae3b67e6554de481df166bc9df6a7394a605e5
[INFO] running `"docker" "start" "-a" "cd764e49170d26450b559dd8eaae3b67e6554de481df166bc9df6a7394a605e5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/classroom_helper-7851b77ad6b8ce2f
[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" "cd764e49170d26450b559dd8eaae3b67e6554de481df166bc9df6a7394a605e5"`
[INFO] running `"docker" "rm" "-f" "cd764e49170d26450b559dd8eaae3b67e6554de481df166bc9df6a7394a605e5"`
[INFO] [stdout] cd764e49170d26450b559dd8eaae3b67e6554de481df166bc9df6a7394a605e5