[INFO] fetching crate memory-balloon 0.1.0...
[INFO] checking memory-balloon-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate memory-balloon 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate memory-balloon 0.1.0 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 memory-balloon 0.1.0
[INFO] finished tweaking crates.io crate memory-balloon 0.1.0
[INFO] tweaked toml for crates.io crate memory-balloon 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate memory-balloon 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded number_prefix v0.3.0
[INFO] [stderr]   Downloaded syn v0.15.39
[INFO] [stderr]   Downloaded rand_core v0.5.0
[INFO] [stderr]   Downloaded libc v0.2.59
[INFO] [stderr]   Downloaded atty v0.2.12
[INFO] [stderr]   Downloaded region v2.1.2
[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] d498b3811ade21fd4b7198bc1ffd4acb5fcca8073b6ef22adb88ac779d53dec4
[INFO] running `Command { std: "docker" "start" "-a" "d498b3811ade21fd4b7198bc1ffd4acb5fcca8073b6ef22adb88ac779d53dec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d498b3811ade21fd4b7198bc1ffd4acb5fcca8073b6ef22adb88ac779d53dec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d498b3811ade21fd4b7198bc1ffd4acb5fcca8073b6ef22adb88ac779d53dec4", kill_on_drop: false }`
[INFO] [stdout] d498b3811ade21fd4b7198bc1ffd4acb5fcca8073b6ef22adb88ac779d53dec4
[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] dcee6bced1e415c268b48437579675290b8098099c43f75d387f7a8cc2c133f6
[INFO] running `Command { std: "docker" "start" "-a" "dcee6bced1e415c268b48437579675290b8098099c43f75d387f7a8cc2c133f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking atty v0.2.12
[INFO] [stderr]     Checking region v2.1.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking memory-balloon v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "dcee6bced1e415c268b48437579675290b8098099c43f75d387f7a8cc2c133f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcee6bced1e415c268b48437579675290b8098099c43f75d387f7a8cc2c133f6", kill_on_drop: false }`
[INFO] [stdout] dcee6bced1e415c268b48437579675290b8098099c43f75d387f7a8cc2c133f6