[INFO] cloning repository https://github.com/akhramov/expressions_evaluator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akhramov/expressions_evaluator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakhramov%2Fexpressions_evaluator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakhramov%2Fexpressions_evaluator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 29e03eb1c501b8e230889adf7e5abaf25aeb6ab3
[INFO] checking akhramov/expressions_evaluator against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakhramov%2Fexpressions_evaluator" "/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/akhramov/expressions_evaluator on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/akhramov/expressions_evaluator
[INFO] finished tweaking git repo https://github.com/akhramov/expressions_evaluator
[INFO] tweaked toml for git repo https://github.com/akhramov/expressions_evaluator written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/akhramov/expressions_evaluator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 615aff54c4d7c6b76b2281c9d11123a7a9f9845db9a515c23eb9cf4119aa24f2
[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" "615aff54c4d7c6b76b2281c9d11123a7a9f9845db9a515c23eb9cf4119aa24f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "615aff54c4d7c6b76b2281c9d11123a7a9f9845db9a515c23eb9cf4119aa24f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "615aff54c4d7c6b76b2281c9d11123a7a9f9845db9a515c23eb9cf4119aa24f2", kill_on_drop: false }`
[INFO] [stdout] 615aff54c4d7c6b76b2281c9d11123a7a9f9845db9a515c23eb9cf4119aa24f2
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa73c28b576ed9b2d86a2b3e0ad9684685804923ca619a132e6324ac1e2f4310
[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" "fa73c28b576ed9b2d86a2b3e0ad9684685804923ca619a132e6324ac1e2f4310", kill_on_drop: false }`
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[INFO] [stderr]     Checking rocket_contrib v0.4.5
[INFO] [stderr]     Checking expressions_evaluation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/http_server.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |             let mut $var = client
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 87 |         make_request!(response, "malformed");
[INFO] [stdout]    |         ------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 06s
[INFO] running `Command { std: "docker" "inspect" "fa73c28b576ed9b2d86a2b3e0ad9684685804923ca619a132e6324ac1e2f4310", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa73c28b576ed9b2d86a2b3e0ad9684685804923ca619a132e6324ac1e2f4310", kill_on_drop: false }`
[INFO] [stdout] fa73c28b576ed9b2d86a2b3e0ad9684685804923ca619a132e6324ac1e2f4310