[INFO] fetching crate ckpttn-rs 0.1.0...
[INFO] checking ckpttn-rs-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate ckpttn-rs 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate ckpttn-rs 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ckpttn-rs 0.1.0
[INFO] finished tweaking crates.io crate ckpttn-rs 0.1.0
[INFO] tweaked toml for crates.io crate ckpttn-rs 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate ckpttn-rs 0.1.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.180
[INFO] [stderr]   Downloaded serde_derive v1.0.180
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a2f221a81feb87292dcfcf8b9f116a9c45dfa8f092dcc907c8044dfb15799e2
[INFO] running `Command { std: "docker" "start" "-a" "8a2f221a81feb87292dcfcf8b9f116a9c45dfa8f092dcc907c8044dfb15799e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a2f221a81feb87292dcfcf8b9f116a9c45dfa8f092dcc907c8044dfb15799e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a2f221a81feb87292dcfcf8b9f116a9c45dfa8f092dcc907c8044dfb15799e2", kill_on_drop: false }`
[INFO] [stdout] 8a2f221a81feb87292dcfcf8b9f116a9c45dfa8f092dcc907c8044dfb15799e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3bbbd9d8edd6896b12cbec1199f81b4489a1c1540fe040accf5779452c0ed89
[INFO] running `Command { std: "docker" "start" "-a" "c3bbbd9d8edd6896b12cbec1199f81b4489a1c1540fe040accf5779452c0ed89", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.180
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling serde_json v1.0.104
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling serde_derive v1.0.180
[INFO] [stderr]     Checking petgraph v0.6.3
[INFO] [stderr]     Checking ckpttn-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.30s
[INFO] running `Command { std: "docker" "inspect" "c3bbbd9d8edd6896b12cbec1199f81b4489a1c1540fe040accf5779452c0ed89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3bbbd9d8edd6896b12cbec1199f81b4489a1c1540fe040accf5779452c0ed89", kill_on_drop: false }`
[INFO] [stdout] c3bbbd9d8edd6896b12cbec1199f81b4489a1c1540fe040accf5779452c0ed89
[INFO] checking ckpttn-rs-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate ckpttn-rs 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate ckpttn-rs 0.1.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ckpttn-rs 0.1.0
[INFO] finished tweaking crates.io crate ckpttn-rs 0.1.0
[INFO] tweaked toml for crates.io crate ckpttn-rs 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate ckpttn-rs 0.1.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4684b74db8bee35509b9cd8e924bae42cb6b5a54dfa81a9bd57a6553d945b574
[INFO] running `Command { std: "docker" "start" "-a" "4684b74db8bee35509b9cd8e924bae42cb6b5a54dfa81a9bd57a6553d945b574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4684b74db8bee35509b9cd8e924bae42cb6b5a54dfa81a9bd57a6553d945b574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4684b74db8bee35509b9cd8e924bae42cb6b5a54dfa81a9bd57a6553d945b574", kill_on_drop: false }`
[INFO] [stdout] 4684b74db8bee35509b9cd8e924bae42cb6b5a54dfa81a9bd57a6553d945b574
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d724b5a24e350fb4fb1599334d8ef533cccd6d062daae71256b88f30d4634e9
[INFO] running `Command { std: "docker" "start" "-a" "6d724b5a24e350fb4fb1599334d8ef533cccd6d062daae71256b88f30d4634e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.180
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling serde_json v1.0.104
[INFO] [stderr]    Compiling serde_derive v1.0.180
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking petgraph v0.6.3
[INFO] [stderr]     Checking ckpttn-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.24s
[INFO] running `Command { std: "docker" "inspect" "6d724b5a24e350fb4fb1599334d8ef533cccd6d062daae71256b88f30d4634e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d724b5a24e350fb4fb1599334d8ef533cccd6d062daae71256b88f30d4634e9", kill_on_drop: false }`
[INFO] [stdout] 6d724b5a24e350fb4fb1599334d8ef533cccd6d062daae71256b88f30d4634e9