[INFO] cloning repository stemjail/stemshim
[INFO] running `"git" "clone" "--bare" "git://github.com/stemjail/stemshim.git" "work/cache/sources/gh/stemjail/stemshim"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/stemjail/stemshim'...
[INFO] running `"git" "clone" "work/cache/sources/gh/stemjail/stemshim" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/stemjail/stemshim"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/stemjail/stemshim'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/stemjail/stemshim" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/stemjail/stemshim"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/stemjail/stemshim'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] db856a3e8045ccdfab52fad5a023efa046afdfdb
[INFO] sha for GitHub repo stemjail/stemshim: db856a3e8045ccdfab52fad5a023efa046afdfdb
[INFO] validating manifest of stemjail/stemshim on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of stemjail/stemshim on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing stemjail/stemshim
[INFO] finished frobbing stemjail/stemshim
[INFO] frobbed toml for stemjail/stemshim written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/stemjail/stemshim/Cargo.toml
[INFO] started frobbing stemjail/stemshim
[INFO] finished frobbing stemjail/stemshim
[INFO] frobbed toml for stemjail/stemshim written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/stemjail/stemshim/Cargo.toml
[INFO] crate stemjail/stemshim already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/stemjail/stemshim/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stemjail v0.4.1
[INFO] [stderr]   Downloaded fd v0.2.3
[INFO] [stderr]   Downloaded tty v0.4.5
[INFO] [stderr]   Downloaded fdpass v0.1.0
[INFO] [stderr]   Downloaded dot v0.1.4
[INFO] [stderr]   Downloaded stemflow v0.5.3
[INFO] [stderr]   Downloaded mnt v0.3.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] testing stemjail/stemshim against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/stemjail/stemshim:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] e7f5b99a2f6aecb241a3768a97078db90ee9bb3ce4cffc021d53cd255ac05e2c
[INFO] running `"docker" "start" "-a" "e7f5b99a2f6aecb241a3768a97078db90ee9bb3ce4cffc021d53cd255ac05e2c"`
[INFO] [stderr]    Compiling dot v0.1.4
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling toml v0.1.30
[INFO] [stderr]    Compiling fd v0.2.3
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling unix_socket v0.5.0
[INFO] [stderr]    Compiling mnt v0.3.1
[INFO] [stderr]    Compiling bincode v0.5.9
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling tty v0.4.5
[INFO] [stderr]    Compiling fdpass v0.1.0
[INFO] [stderr]    Compiling stemflow v0.5.3
[INFO] [stderr] error[E0463]: can't find crate for `collections`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/stemflow-0.5.3/src/lib.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | extern crate collections;
[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 `stemflow`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e7f5b99a2f6aecb241a3768a97078db90ee9bb3ce4cffc021d53cd255ac05e2c"`
[INFO] running `"docker" "rm" "-f" "e7f5b99a2f6aecb241a3768a97078db90ee9bb3ce4cffc021d53cd255ac05e2c"`
[INFO] [stdout] e7f5b99a2f6aecb241a3768a97078db90ee9bb3ce4cffc021d53cd255ac05e2c