[INFO] fetching crate stemjail 0.4.1...
[INFO] checking stemjail-0.4.1 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate stemjail 0.4.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate stemjail 0.4.1 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stemjail 0.4.1
[INFO] finished tweaking crates.io crate stemjail 0.4.1
[INFO] tweaked toml for crates.io crate stemjail 0.4.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tty v0.4.5
[INFO] [stderr]   Downloaded stemflow v0.5.3
[INFO] [stderr]   Downloaded fd v0.2.3
[INFO] [stderr]   Downloaded fdpass v0.1.0
[INFO] [stderr]   Downloaded mnt v0.3.1
[INFO] [stderr]   Downloaded dot v0.1.4
[INFO] [stderr]   Downloaded bincode v0.5.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1816108287c25576567214da0b3ea70a2efdd44fa5dc7909c2101c80d3d18d77
[INFO] running `Command { std: "docker" "start" "-a" "1816108287c25576567214da0b3ea70a2efdd44fa5dc7909c2101c80d3d18d77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1816108287c25576567214da0b3ea70a2efdd44fa5dc7909c2101c80d3d18d77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1816108287c25576567214da0b3ea70a2efdd44fa5dc7909c2101c80d3d18d77", kill_on_drop: false }`
[INFO] [stdout] 1816108287c25576567214da0b3ea70a2efdd44fa5dc7909c2101c80d3d18d77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53d0a8a1cacfabfb1159e39f5b475974184a17394cdc0460522d9bdffafba003
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "53d0a8a1cacfabfb1159e39f5b475974184a17394cdc0460522d9bdffafba003", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]     Checking dot v0.1.4
[INFO] [stderr]     Checking bitflags v0.5.0
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking fd v0.2.3
[INFO] [stderr]     Checking unix_socket v0.5.0
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking mnt v0.3.1
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking fdpass v0.1.0
[INFO] [stderr]     Checking tty v0.4.5
[INFO] [stderr]     Checking stemflow v0.5.3
[INFO] [stdout] error[E0463]: can't find crate for `collections`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stemflow-0.5.3/src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | extern crate collections;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stemflow`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "53d0a8a1cacfabfb1159e39f5b475974184a17394cdc0460522d9bdffafba003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53d0a8a1cacfabfb1159e39f5b475974184a17394cdc0460522d9bdffafba003", kill_on_drop: false }`
[INFO] [stdout] 53d0a8a1cacfabfb1159e39f5b475974184a17394cdc0460522d9bdffafba003