[INFO] fetching crate melcome 0.0.1...
[INFO] building melcome-0.0.1 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate melcome 0.0.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate melcome 0.0.1 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate melcome 0.0.1
[INFO] finished tweaking crates.io crate melcome 0.0.1
[INFO] tweaked toml for crates.io crate melcome 0.0.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate melcome 0.0.1 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ang v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7dbc2f5aa7c5967dc17bf7f9a17bf100bf44af16b07ee5b7b9372bfdbfc5e83
[INFO] running `Command { std: "docker" "start" "-a" "a7dbc2f5aa7c5967dc17bf7f9a17bf100bf44af16b07ee5b7b9372bfdbfc5e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7dbc2f5aa7c5967dc17bf7f9a17bf100bf44af16b07ee5b7b9372bfdbfc5e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7dbc2f5aa7c5967dc17bf7f9a17bf100bf44af16b07ee5b7b9372bfdbfc5e83", kill_on_drop: false }`
[INFO] [stdout] a7dbc2f5aa7c5967dc17bf7f9a17bf100bf44af16b07ee5b7b9372bfdbfc5e83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 612da53db3996dacaea4670270a94a7e3862ebc9d4a165f7dde1662c69ee2d30
[INFO] running `Command { std: "docker" "start" "-a" "612da53db3996dacaea4670270a94a7e3862ebc9d4a165f7dde1662c69ee2d30", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling uuid v1.1.2
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling ang v0.6.0
[INFO] [stderr]    Compiling melcome v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "612da53db3996dacaea4670270a94a7e3862ebc9d4a165f7dde1662c69ee2d30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "612da53db3996dacaea4670270a94a7e3862ebc9d4a165f7dde1662c69ee2d30", kill_on_drop: false }`
[INFO] [stdout] 612da53db3996dacaea4670270a94a7e3862ebc9d4a165f7dde1662c69ee2d30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3c741672f4c2c2cef75e32987de67d62950e7856fc401e64018b7511fc22be4
[INFO] running `Command { std: "docker" "start" "-a" "d3c741672f4c2c2cef75e32987de67d62950e7856fc401e64018b7511fc22be4", kill_on_drop: false }`
[INFO] [stderr]    Compiling melcome v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/io.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut expr3 = epr1.sniff(url4);
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "d3c741672f4c2c2cef75e32987de67d62950e7856fc401e64018b7511fc22be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3c741672f4c2c2cef75e32987de67d62950e7856fc401e64018b7511fc22be4", kill_on_drop: false }`
[INFO] [stdout] d3c741672f4c2c2cef75e32987de67d62950e7856fc401e64018b7511fc22be4