[INFO] fetching crate url-prefix 2.0.1...
[INFO] checking url-prefix-2.0.1 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate url-prefix 2.0.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate url-prefix 2.0.1 on toolchain a874956d940ecb3ed524b6176a171219ac4787ea
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate url-prefix 2.0.1
[INFO] finished tweaking crates.io crate url-prefix 2.0.1
[INFO] tweaked toml for crates.io crate url-prefix 2.0.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "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] 7b6eb11a0dd3684d7f5dcb868eff0afec1beaced8f2689d00c8a7cda9173f7e6
[INFO] running `Command { std: "docker" "start" "-a" "7b6eb11a0dd3684d7f5dcb868eff0afec1beaced8f2689d00c8a7cda9173f7e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b6eb11a0dd3684d7f5dcb868eff0afec1beaced8f2689d00c8a7cda9173f7e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b6eb11a0dd3684d7f5dcb868eff0afec1beaced8f2689d00c8a7cda9173f7e6", kill_on_drop: false }`
[INFO] [stdout] 7b6eb11a0dd3684d7f5dcb868eff0afec1beaced8f2689d00c8a7cda9173f7e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd38cdc729d8a28d365ff4a6edefd3d918e1dd7452e2f5ca829b420c83cb195f
[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" "fd38cdc729d8a28d365ff4a6edefd3d918e1dd7452e2f5ca829b420c83cb195f", kill_on_drop: false }`
[INFO] [stderr]     Checking concat-with v0.2.5
[INFO] [stderr]     Checking cow-utils v0.1.2
[INFO] [stderr]     Checking slash-formatter v3.0.3
[INFO] [stderr]     Checking url-prefix v2.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "fd38cdc729d8a28d365ff4a6edefd3d918e1dd7452e2f5ca829b420c83cb195f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd38cdc729d8a28d365ff4a6edefd3d918e1dd7452e2f5ca829b420c83cb195f", kill_on_drop: false }`
[INFO] [stdout] fd38cdc729d8a28d365ff4a6edefd3d918e1dd7452e2f5ca829b420c83cb195f