[INFO] updating cached repository nrc/callgraph.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nrc/callgraph.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nrc/callgraph.rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/nrc/callgraph.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/nrc/callgraph.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nrc/callgraph.rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/nrc/callgraph.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/nrc/callgraph.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cb4ed81106a5f03d3e82c410e7b9f961415dd3c1
[INFO] sha for GitHub repo nrc/callgraph.rs: cb4ed81106a5f03d3e82c410e7b9f961415dd3c1
[INFO] validating manifest of nrc/callgraph.rs on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nrc/callgraph.rs on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nrc/callgraph.rs
[INFO] finished frobbing nrc/callgraph.rs
[INFO] frobbed toml for nrc/callgraph.rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/nrc/callgraph.rs/Cargo.toml
[INFO] started frobbing nrc/callgraph.rs
[INFO] finished frobbing nrc/callgraph.rs
[INFO] frobbed toml for nrc/callgraph.rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/nrc/callgraph.rs/Cargo.toml
[INFO] crate nrc/callgraph.rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing nrc/callgraph.rs against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/nrc/callgraph.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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] fc728743946c4accaf37e6e9634a32ebb8912aed45099d8abe27f62d47546da8
[INFO] running `"docker" "start" "-a" "fc728743946c4accaf37e6e9634a32ebb8912aed45099d8abe27f62d47546da8"`
[INFO] [stderr]    Compiling callgraph v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `rustc_trans`
[INFO] [stderr]   --> src/lib.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | extern crate rustc_trans;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `callgraph`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fc728743946c4accaf37e6e9634a32ebb8912aed45099d8abe27f62d47546da8"`
[INFO] running `"docker" "rm" "-f" "fc728743946c4accaf37e6e9634a32ebb8912aed45099d8abe27f62d47546da8"`
[INFO] [stdout] fc728743946c4accaf37e6e9634a32ebb8912aed45099d8abe27f62d47546da8