[INFO] cloning repository https://github.com/matklad/thrench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matklad/thrench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fthrench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fthrench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2bdf941a5f1d0863ab28522e1fe0e303ba20cd5
[INFO] checking matklad/thrench against try#ff4041081a39fb2e940a03a55f86a4ad0b37d26a for pr-80763
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fthrench" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/thrench on toolchain ff4041081a39fb2e940a03a55f86a4ad0b37d26a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff4041081a39fb2e940a03a55f86a4ad0b37d26a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/thrench
[INFO] finished tweaking git repo https://github.com/matklad/thrench
[INFO] tweaked toml for git repo https://github.com/matklad/thrench written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/thrench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff4041081a39fb2e940a03a55f86a4ad0b37d26a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-core v0.1.4
[INFO] [stderr]   Downloaded miow v0.2.0
[INFO] [stderr]   Downloaded futures v0.1.10
[INFO] [stderr]   Downloaded mio v0.6.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+ff4041081a39fb2e940a03a55f86a4ad0b37d26a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1b26217300dc3310a619bafd85caf2d4872359780d48e6c6537a5ce21acfa02
[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" "f1b26217300dc3310a619bafd85caf2d4872359780d48e6c6537a5ce21acfa02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1b26217300dc3310a619bafd85caf2d4872359780d48e6c6537a5ce21acfa02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b26217300dc3310a619bafd85caf2d4872359780d48e6c6537a5ce21acfa02", kill_on_drop: false }`
[INFO] [stdout] f1b26217300dc3310a619bafd85caf2d4872359780d48e6c6537a5ce21acfa02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+ff4041081a39fb2e940a03a55f86a4ad0b37d26a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 454ce67e3e152a7a32717d977b17f23652810a47cd981e1759f88c7a682e22d8
[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" "454ce67e3e152a7a32717d977b17f23652810a47cd981e1759f88c7a682e22d8", kill_on_drop: false }`
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking term_size v0.2.2
[INFO] [stderr]     Checking futures v0.1.10
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking clap v2.20.4
[INFO] [stderr]     Checking mio v0.6.4
[INFO] [stderr]     Checking tokio-core v0.1.4
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking tokio-proto v0.1.0
[INFO] [stderr]     Checking thrench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/bin/fut.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/bin/fut.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.08s
[INFO] running `Command { std: "docker" "inspect" "454ce67e3e152a7a32717d977b17f23652810a47cd981e1759f88c7a682e22d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "454ce67e3e152a7a32717d977b17f23652810a47cd981e1759f88c7a682e22d8", kill_on_drop: false }`
[INFO] [stdout] 454ce67e3e152a7a32717d977b17f23652810a47cd981e1759f88c7a682e22d8