[INFO] fetching crate bytestring 1.0.0...
[INFO] testing bytestring-1.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate bytestring 1.0.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate bytestring 1.0.0 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 bytestring 1.0.0
[INFO] finished tweaking crates.io crate bytestring 1.0.0
[INFO] tweaked toml for crates.io crate bytestring 1.0.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] 428cb8a4a58eafece17ccf4c541c6aef8369b500175fb83dbb5c94c40b36e135
[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" "428cb8a4a58eafece17ccf4c541c6aef8369b500175fb83dbb5c94c40b36e135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "428cb8a4a58eafece17ccf4c541c6aef8369b500175fb83dbb5c94c40b36e135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "428cb8a4a58eafece17ccf4c541c6aef8369b500175fb83dbb5c94c40b36e135", kill_on_drop: false }`
[INFO] [stdout] 428cb8a4a58eafece17ccf4c541c6aef8369b500175fb83dbb5c94c40b36e135
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c764bdd50f17cf91c5e72b01ccce640096ef5ddd531aab3eaab1363844d938b7
[INFO] running `Command { std: "docker" "start" "-a" "c764bdd50f17cf91c5e72b01ccce640096ef5ddd531aab3eaab1363844d938b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v1.0.0
[INFO] [stderr]    Compiling bytestring v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "c764bdd50f17cf91c5e72b01ccce640096ef5ddd531aab3eaab1363844d938b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c764bdd50f17cf91c5e72b01ccce640096ef5ddd531aab3eaab1363844d938b7", kill_on_drop: false }`
[INFO] [stdout] c764bdd50f17cf91c5e72b01ccce640096ef5ddd531aab3eaab1363844d938b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] baf398717539690dd77db279bffc9af2f7d17d2426b6ab662b66159828e99c41
[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" "baf398717539690dd77db279bffc9af2f7d17d2426b6ab662b66159828e99c41", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytestring v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `siphasher`
[INFO] [stdout]    --> src/lib.rs:227:9
[INFO] [stdout]     |
[INFO] [stdout] 227 |     use siphasher::sip::SipHasher;
[INFO] [stdout]     |         ^^^^^^^^^ use of undeclared crate or module `siphasher`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SipHasher`
[INFO] [stdout]    --> src/lib.rs:246:27
[INFO] [stdout]     |
[INFO] [stdout] 246 |           let mut hasher1 = SipHasher::default();
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: a trait with a similar name exists
[INFO] [stdout]     |
[INFO] [stdout] 246 |         let mut hasher1 = Hasher::default();
[INFO] [stdout]     |                           ^^^^^^
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 224 |     use core::hash::SipHasher;
[INFO] [stdout]     |
[INFO] [stdout] 224 |     use crate::hash::SipHasher;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SipHasher`
[INFO] [stdout]    --> src/lib.rs:249:27
[INFO] [stdout]     |
[INFO] [stdout] 249 |           let mut hasher2 = SipHasher::default();
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: a trait with a similar name exists
[INFO] [stdout]     |
[INFO] [stdout] 249 |         let mut hasher2 = Hasher::default();
[INFO] [stdout]     |                           ^^^^^^
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 224 |     use core::hash::SipHasher;
[INFO] [stdout]     |
[INFO] [stdout] 224 |     use crate::hash::SipHasher;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]    --> src/lib.rs:225:28
[INFO] [stdout]     |
[INFO] [stdout] 225 |     use core::hash::{Hash, Hasher};
[INFO] [stdout]     |                            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bytestring`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "baf398717539690dd77db279bffc9af2f7d17d2426b6ab662b66159828e99c41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baf398717539690dd77db279bffc9af2f7d17d2426b6ab662b66159828e99c41", kill_on_drop: false }`
[INFO] [stdout] baf398717539690dd77db279bffc9af2f7d17d2426b6ab662b66159828e99c41