[INFO] fetching crate url-prefix 2.0.4...
[INFO] checking url-prefix-2.0.4 against try#1463461488056994d1b84e8b752e7c11c7fae7aa for pr-154205
[INFO] extracting crate url-prefix 2.0.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate url-prefix 2.0.4
[INFO] finished tweaking crates.io crate url-prefix 2.0.4
[INFO] tweaked toml for crates.io crate url-prefix 2.0.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate url-prefix 2.0.4 on toolchain 1463461488056994d1b84e8b752e7c11c7fae7aa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce783b214448b225fb0d1108719749aed03f1f2e815aa45bf497b42cd1929bf5
[INFO] running `Command { std: "docker" "start" "-a" "ce783b214448b225fb0d1108719749aed03f1f2e815aa45bf497b42cd1929bf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce783b214448b225fb0d1108719749aed03f1f2e815aa45bf497b42cd1929bf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce783b214448b225fb0d1108719749aed03f1f2e815aa45bf497b42cd1929bf5", kill_on_drop: false }`
[INFO] [stdout] ce783b214448b225fb0d1108719749aed03f1f2e815aa45bf497b42cd1929bf5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c68fc10bbef101edcefab3a265b8288f7bf8f8ca0183744f169c7f5c4a5b727
[INFO] running `Command { std: "docker" "start" "-a" "7c68fc10bbef101edcefab3a265b8288f7bf8f8ca0183744f169c7f5c4a5b727", kill_on_drop: false }`
[INFO] [stderr]    Compiling slash-formatter v3.1.6
[INFO] [stderr]     Checking concat-with v0.2.9
[INFO] [stderr]     Checking cow-utils v0.1.3
[INFO] [stderr]     Checking url-prefix v2.0.4 (/opt/rustwide/workdir)
[INFO] [stderr] [FMTARGS] {"crate":"url_prefix","p":1,"ph":2,"wa":0,"pa":0,"a":2,"pos":2,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":2,"a_opt":2,"sz_no_dedup":32,"sz_old":32,"sz_opt":32}
[INFO] [stderr] [FMTARGS] {"crate":"url_prefix","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"url_prefix","p":1,"ph":2,"wa":0,"pa":0,"a":2,"pos":2,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":2,"a_opt":2,"sz_no_dedup":32,"sz_old":32,"sz_opt":32}
[INFO] [stderr] [FMTARGS] {"crate":"url_prefix","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "7c68fc10bbef101edcefab3a265b8288f7bf8f8ca0183744f169c7f5c4a5b727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c68fc10bbef101edcefab3a265b8288f7bf8f8ca0183744f169c7f5c4a5b727", kill_on_drop: false }`
[INFO] [stdout] 7c68fc10bbef101edcefab3a265b8288f7bf8f8ca0183744f169c7f5c4a5b727