[INFO] fetching crate souvenir-core 0.5.5...
[INFO] testing souvenir-core-0.5.5 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate souvenir-core 0.5.5 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate souvenir-core 0.5.5
[INFO] finished tweaking crates.io crate souvenir-core 0.5.5
[INFO] tweaked toml for crates.io crate souvenir-core 0.5.5 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate souvenir-core 0.5.5 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate souvenir-core 0.5.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4414a4c864e069fccf8a3b188ace9765232524e90433924afd0f82cb87253325
[INFO] running `Command { std: "docker" "start" "-a" "4414a4c864e069fccf8a3b188ace9765232524e90433924afd0f82cb87253325", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4414a4c864e069fccf8a3b188ace9765232524e90433924afd0f82cb87253325", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4414a4c864e069fccf8a3b188ace9765232524e90433924afd0f82cb87253325", kill_on_drop: false }`
[INFO] [stdout] 4414a4c864e069fccf8a3b188ace9765232524e90433924afd0f82cb87253325
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b0997e71aac2efd617a742a99798715c2acaeed1d9e64a58aeeba27520a826e
[INFO] running `Command { std: "docker" "start" "-a" "4b0997e71aac2efd617a742a99798715c2acaeed1d9e64a58aeeba27520a826e", kill_on_drop: false }`
[INFO] [stderr]    Compiling souvenir-core v0.5.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "4b0997e71aac2efd617a742a99798715c2acaeed1d9e64a58aeeba27520a826e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b0997e71aac2efd617a742a99798715c2acaeed1d9e64a58aeeba27520a826e", kill_on_drop: false }`
[INFO] [stdout] 4b0997e71aac2efd617a742a99798715c2acaeed1d9e64a58aeeba27520a826e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f05bf7ebc1ba15a9cf8ba74c309471a9bf61da02fc9e976f4ca5e94ea8b1cacf
[INFO] running `Command { std: "docker" "start" "-a" "f05bf7ebc1ba15a9cf8ba74c309471a9bf61da02fc9e976f4ca5e94ea8b1cacf", kill_on_drop: false }`
[INFO] [stderr]    Compiling souvenir-core v0.5.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `rand`
[INFO] [stdout]   --> src/encoding/suffix.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     use rand::random;
[INFO] [stdout]    |         ^^^^ use of unresolved module or unlinked crate `rand`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `rand`, use `cargo add rand` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `souvenir-core` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f05bf7ebc1ba15a9cf8ba74c309471a9bf61da02fc9e976f4ca5e94ea8b1cacf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f05bf7ebc1ba15a9cf8ba74c309471a9bf61da02fc9e976f4ca5e94ea8b1cacf", kill_on_drop: false }`
[INFO] [stdout] f05bf7ebc1ba15a9cf8ba74c309471a9bf61da02fc9e976f4ca5e94ea8b1cacf