[INFO] fetching crate tees 0.1.1...
[INFO] testing tees-0.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate tees 0.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate tees 0.1.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tees 0.1.1
[INFO] finished tweaking crates.io crate tees 0.1.1
[INFO] tweaked toml for crates.io crate tees 0.1.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate tees 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 29dbc0f68909d3ef5ac4caad30db6355c9d71db20439d2fea73255f0a1ee54a4
[INFO] running `Command { std: "docker" "start" "-a" "29dbc0f68909d3ef5ac4caad30db6355c9d71db20439d2fea73255f0a1ee54a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29dbc0f68909d3ef5ac4caad30db6355c9d71db20439d2fea73255f0a1ee54a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29dbc0f68909d3ef5ac4caad30db6355c9d71db20439d2fea73255f0a1ee54a4", kill_on_drop: false }`
[INFO] [stdout] 29dbc0f68909d3ef5ac4caad30db6355c9d71db20439d2fea73255f0a1ee54a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a77de5926dd8d4999c4548fe235bd6883419e7adafbfe821ff8906f7afc6438
[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" "8a77de5926dd8d4999c4548fe235bd6883419e7adafbfe821ff8906f7afc6438", kill_on_drop: false }`
[INFO] [stderr]    Compiling tees v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "8a77de5926dd8d4999c4548fe235bd6883419e7adafbfe821ff8906f7afc6438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a77de5926dd8d4999c4548fe235bd6883419e7adafbfe821ff8906f7afc6438", kill_on_drop: false }`
[INFO] [stdout] 8a77de5926dd8d4999c4548fe235bd6883419e7adafbfe821ff8906f7afc6438
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89ca83e933029210c1bac420df2a6b7a42f83bfc254875a688d9cfba734d936c
[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" "89ca83e933029210c1bac420df2a6b7a42f83bfc254875a688d9cfba734d936c", kill_on_drop: false }`
[INFO] [stderr]    Compiling tees v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `tee`
[INFO] [stdout]  --> examples/simple.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate tee;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tees`
[INFO] [stderr] 
[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" "89ca83e933029210c1bac420df2a6b7a42f83bfc254875a688d9cfba734d936c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89ca83e933029210c1bac420df2a6b7a42f83bfc254875a688d9cfba734d936c", kill_on_drop: false }`
[INFO] [stdout] 89ca83e933029210c1bac420df2a6b7a42f83bfc254875a688d9cfba734d936c