[INFO] cloning repository https://github.com/brianp/muxed
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brianp/muxed" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrianp%2Fmuxed", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrianp%2Fmuxed'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 42b28438a3abf741096170c2f527b85ac25174ea
[INFO] testing brianp/muxed against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrianp%2Fmuxed" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brianp/muxed on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brianp/muxed
[INFO] finished tweaking git repo https://github.com/brianp/muxed
[INFO] tweaked toml for git repo https://github.com/brianp/muxed written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/brianp/muxed already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_yaml v0.8.11
[INFO] [stderr]   Downloaded cc v1.0.30
[INFO] [stderr]   Downloaded syn v0.15.27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf807347473ba02a657e66629aa47faaaf0647b4977b86316dba6caa8795b9c6
[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" "cf807347473ba02a657e66629aa47faaaf0647b4977b86316dba6caa8795b9c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf807347473ba02a657e66629aa47faaaf0647b4977b86316dba6caa8795b9c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf807347473ba02a657e66629aa47faaaf0647b4977b86316dba6caa8795b9c6", kill_on_drop: false }`
[INFO] [stdout] cf807347473ba02a657e66629aa47faaaf0647b4977b86316dba6caa8795b9c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", 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] 9ddcb9558d95335896a59d83886c072fd838bb2fa2dc56822753935bb7537e9e
[INFO] running `Command { std: "docker" "start" "-a" "9ddcb9558d95335896a59d83886c072fd838bb2fa2dc56822753935bb7537e9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling common v0.8.2 (/opt/rustwide/workdir/common)
[INFO] [stderr]    Compiling serde_yaml v0.8.11
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling new v0.8.2 (/opt/rustwide/workdir/new)
[INFO] [stderr]    Compiling load v0.8.2 (/opt/rustwide/workdir/load)
[INFO] [stderr]    Compiling edit v0.8.2 (/opt/rustwide/workdir/edit)
[INFO] [stderr]    Compiling list v0.8.2 (/opt/rustwide/workdir/list)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> list/src/lib.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     &projects.sort();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling snapshot v0.8.2 (/opt/rustwide/workdir/snapshot)
[INFO] [stderr]    Compiling muxed v0.8.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.27s
[INFO] running `Command { std: "docker" "inspect" "9ddcb9558d95335896a59d83886c072fd838bb2fa2dc56822753935bb7537e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ddcb9558d95335896a59d83886c072fd838bb2fa2dc56822753935bb7537e9e", kill_on_drop: false }`
[INFO] [stdout] 9ddcb9558d95335896a59d83886c072fd838bb2fa2dc56822753935bb7537e9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", 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] 7b258ac942649c56333274872828d3498b8a364971c5c51552b41694b0f8521a
[INFO] running `Command { std: "docker" "start" "-a" "7b258ac942649c56333274872828d3498b8a364971c5c51552b41694b0f8521a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "7b258ac942649c56333274872828d3498b8a364971c5c51552b41694b0f8521a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b258ac942649c56333274872828d3498b8a364971c5c51552b41694b0f8521a", kill_on_drop: false }`
[INFO] [stdout] 7b258ac942649c56333274872828d3498b8a364971c5c51552b41694b0f8521a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b560a2bfcba50d6cc98d3f3c455119dcfbd419b3a4c80be20858fbca917218bd
[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" "b560a2bfcba50d6cc98d3f3c455119dcfbd419b3a4c80be20858fbca917218bd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "b560a2bfcba50d6cc98d3f3c455119dcfbd419b3a4c80be20858fbca917218bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b560a2bfcba50d6cc98d3f3c455119dcfbd419b3a4c80be20858fbca917218bd", kill_on_drop: false }`
[INFO] [stdout] b560a2bfcba50d6cc98d3f3c455119dcfbd419b3a4c80be20858fbca917218bd