[INFO] fetching crate knrs 0.2.1...
[INFO] checking knrs-0.2.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate knrs 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate knrs 0.2.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate knrs 0.2.1
[INFO] finished tweaking crates.io crate knrs 0.2.1
[INFO] tweaked toml for crates.io crate knrs 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages
[INFO] [stderr]       Adding byteorder v0.5.3 (latest: v1.5.0)
[INFO] [stderr]       Adding csv v0.14.7 (latest: v1.3.0)
[INFO] [stderr]       Adding glob v0.2.11 (latest: v0.3.1)
[INFO] [stderr]       Adding libc v0.1.12 (latest: v0.2.153)
[INFO] [stderr]       Adding pretty-bytes v0.1.0 (latest: v0.2.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quick-csv v0.1.6
[INFO] [stderr]   Downloaded pretty-bytes v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1ab9cdc26c6c6d3041f29228da44387057ee91cd88ddcf72a1e2bfea1a014f5
[INFO] running `Command { std: "docker" "start" "-a" "d1ab9cdc26c6c6d3041f29228da44387057ee91cd88ddcf72a1e2bfea1a014f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1ab9cdc26c6c6d3041f29228da44387057ee91cd88ddcf72a1e2bfea1a014f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1ab9cdc26c6c6d3041f29228da44387057ee91cd88ddcf72a1e2bfea1a014f5", kill_on_drop: false }`
[INFO] [stdout] d1ab9cdc26c6c6d3041f29228da44387057ee91cd88ddcf72a1e2bfea1a014f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58e1b86237a7e09f3882c5f5b4344a8bebcff3cd0679be51e2c58918b89a6cb8
[INFO] running `Command { std: "docker" "start" "-a" "58e1b86237a7e09f3882c5f5b4344a8bebcff3cd0679be51e2c58918b89a6cb8", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking pretty-bytes v0.1.0
[INFO] [stderr]     Checking quick-csv v0.1.6
[INFO] [stderr]     Checking csv v0.14.7
[INFO] [stderr]     Checking knrs v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "58e1b86237a7e09f3882c5f5b4344a8bebcff3cd0679be51e2c58918b89a6cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58e1b86237a7e09f3882c5f5b4344a8bebcff3cd0679be51e2c58918b89a6cb8", kill_on_drop: false }`
[INFO] [stdout] 58e1b86237a7e09f3882c5f5b4344a8bebcff3cd0679be51e2c58918b89a6cb8