[INFO] cloning repository https://github.com/imtsuki/w
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imtsuki/w" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimtsuki%2Fw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimtsuki%2Fw'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62684579f84b9d294f98105dbe2f68a244de3b17
[INFO] checking imtsuki/w against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimtsuki%2Fw" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imtsuki/w on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/imtsuki/w
[INFO] finished tweaking git repo https://github.com/imtsuki/w
[INFO] tweaked toml for git repo https://github.com/imtsuki/w written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/imtsuki/w already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fec22166ddc9fe5bec5e5a74dfb0e93c355dd126b2cf6af9254c69f6e96b752a
[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" "fec22166ddc9fe5bec5e5a74dfb0e93c355dd126b2cf6af9254c69f6e96b752a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fec22166ddc9fe5bec5e5a74dfb0e93c355dd126b2cf6af9254c69f6e96b752a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fec22166ddc9fe5bec5e5a74dfb0e93c355dd126b2cf6af9254c69f6e96b752a", kill_on_drop: false }`
[INFO] [stdout] fec22166ddc9fe5bec5e5a74dfb0e93c355dd126b2cf6af9254c69f6e96b752a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8402cacf0e0cc54cc87f0abaf1e0d7d56c94d1157b9de0951c3de2bb40c74213
[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" "8402cacf0e0cc54cc87f0abaf1e0d7d56c94d1157b9de0951c3de2bb40c74213", kill_on_drop: false }`
[INFO] [stderr]     Checking w v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]  --> src/w.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Var(String),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]  --> src/w.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Var(String),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Lit`
[INFO] [stdout]  --> src/w.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Lit(Lit),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Lit`
[INFO] [stdout]  --> src/w.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Lit(Lit),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `App`
[INFO] [stdout]   --> src/w.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     App(Box<Exp>, Box<Exp>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `App`
[INFO] [stdout]   --> src/w.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     App(Box<Exp>, Box<Exp>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Abs`
[INFO] [stdout]   --> src/w.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Abs(String, Box<Exp>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Abs`
[INFO] [stdout]   --> src/w.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Abs(String, Box<Exp>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Let`
[INFO] [stdout]   --> src/w.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Let(String, Box<Exp>, Box<Exp>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Int`
[INFO] [stdout]   --> src/w.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Int(i64),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bool`
[INFO] [stdout]   --> src/w.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Bool(bool),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Str`
[INFO] [stdout]   --> src/w.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Str(String),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]   --> src/w.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Var(String),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Int`
[INFO] [stdout]   --> src/w.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Int,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Fun`
[INFO] [stdout]   --> src/w.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     Fun(Box<Type>, Box<Type>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Let`
[INFO] [stdout]   --> src/w.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Let(String, Box<Exp>, Box<Exp>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Int`
[INFO] [stdout]   --> src/w.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Int(i64),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bool`
[INFO] [stdout]   --> src/w.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Bool(bool),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Str`
[INFO] [stdout]   --> src/w.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Str(String),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]   --> src/w.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Var(String),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Int`
[INFO] [stdout]   --> src/w.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Int,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Fun`
[INFO] [stdout]   --> src/w.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     Fun(Box<Type>, Box<Type>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "8402cacf0e0cc54cc87f0abaf1e0d7d56c94d1157b9de0951c3de2bb40c74213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8402cacf0e0cc54cc87f0abaf1e0d7d56c94d1157b9de0951c3de2bb40c74213", kill_on_drop: false }`
[INFO] [stdout] 8402cacf0e0cc54cc87f0abaf1e0d7d56c94d1157b9de0951c3de2bb40c74213