[INFO] fetching crate tab-command 0.5.0...
[INFO] checking tab-command-0.5.0 against beta for pr-78714
[INFO] extracting crate tab-command 0.5.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate tab-command 0.5.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tab-command 0.5.0
[INFO] finished tweaking crates.io crate tab-command 0.5.0
[INFO] tweaked toml for crates.io crate tab-command 0.5.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] e3acd1b2c485e26718000ea71dd4eb68564196cf60d8637b02301c855239ffeb
[INFO] running `Command { std: "docker" "start" "-a" "e3acd1b2c485e26718000ea71dd4eb68564196cf60d8637b02301c855239ffeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3acd1b2c485e26718000ea71dd4eb68564196cf60d8637b02301c855239ffeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3acd1b2c485e26718000ea71dd4eb68564196cf60d8637b02301c855239ffeb", kill_on_drop: false }`
[INFO] [stdout] e3acd1b2c485e26718000ea71dd4eb68564196cf60d8637b02301c855239ffeb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--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] d63b3946260249ce4696d6128056b51af77bfff4603591a97a314266fcf16f2c
[INFO] running `Command { std: "docker" "start" "-a" "d63b3946260249ce4696d6128056b51af77bfff4603591a97a314266fcf16f2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling sysinfo v0.15.3
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking fuzzy-matcher v0.3.7
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking semver-parser v0.10.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking mio v0.7.5
[INFO] [stderr]    Compiling typed-builder v0.7.0
[INFO] [stderr]     Checking tokio v0.2.23
[INFO] [stderr]     Checking tungstenite v0.11.1
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking snailquote v0.3.0
[INFO] [stderr]     Checking serde_yaml v0.8.14
[INFO] [stderr]     Checking simplelog v0.8.0
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]     Checking tokio-test v0.2.1
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking lifeline v0.4.0
[INFO] [stderr]     Checking async-tungstenite v0.8.0
[INFO] [stderr]     Checking crossterm v0.17.7
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking tab-api v0.5.0
[INFO] [stderr]     Checking tab-websocket v0.5.0
[INFO] [stderr]     Checking tab-command v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.63s
[INFO] running `Command { std: "docker" "inspect" "d63b3946260249ce4696d6128056b51af77bfff4603591a97a314266fcf16f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d63b3946260249ce4696d6128056b51af77bfff4603591a97a314266fcf16f2c", kill_on_drop: false }`
[INFO] [stdout] d63b3946260249ce4696d6128056b51af77bfff4603591a97a314266fcf16f2c