[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] testing imtsuki/w against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimtsuki%2Fw" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imtsuki/w on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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-3/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" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84d41abef01d882d87e5c639cf3a5123bff39dca4319603491274f31b286a552
[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" "84d41abef01d882d87e5c639cf3a5123bff39dca4319603491274f31b286a552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84d41abef01d882d87e5c639cf3a5123bff39dca4319603491274f31b286a552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84d41abef01d882d87e5c639cf3a5123bff39dca4319603491274f31b286a552", kill_on_drop: false }`
[INFO] [stdout] 84d41abef01d882d87e5c639cf3a5123bff39dca4319603491274f31b286a552
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4f74a316f5ed115d4b1dd049545ff660c00cf38386e2a821cd62251aca2384e
[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" "c4f74a316f5ed115d4b1dd049545ff660c00cf38386e2a821cd62251aca2384e", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: `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: `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: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "c4f74a316f5ed115d4b1dd049545ff660c00cf38386e2a821cd62251aca2384e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4f74a316f5ed115d4b1dd049545ff660c00cf38386e2a821cd62251aca2384e", kill_on_drop: false }`
[INFO] [stdout] c4f74a316f5ed115d4b1dd049545ff660c00cf38386e2a821cd62251aca2384e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e6d9c590ab77141c2a9368990aeee4d2dc12227f05c4816801f68c9b60d7ccd
[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" "9e6d9c590ab77141c2a9368990aeee4d2dc12227f05c4816801f68c9b60d7ccd", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: `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: `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: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "9e6d9c590ab77141c2a9368990aeee4d2dc12227f05c4816801f68c9b60d7ccd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e6d9c590ab77141c2a9368990aeee4d2dc12227f05c4816801f68c9b60d7ccd", kill_on_drop: false }`
[INFO] [stdout] 9e6d9c590ab77141c2a9368990aeee4d2dc12227f05c4816801f68c9b60d7ccd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 792d44df561434bb3297cecea742474c3136b7bfe696b2a481144794ce7a2be5
[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" "792d44df561434bb3297cecea742474c3136b7bfe696b2a481144794ce7a2be5", kill_on_drop: false }`
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]  --> src/w.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Var(String),
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Lit`
[INFO] [stderr]  --> src/w.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Lit(Lit),
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `App`
[INFO] [stderr]   --> src/w.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     App(Box<Exp>, Box<Exp>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Abs`
[INFO] [stderr]   --> src/w.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Abs(String, Box<Exp>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Let`
[INFO] [stderr]   --> src/w.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Let(String, Box<Exp>, Box<Exp>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Int`
[INFO] [stderr]   --> src/w.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     Int(i64),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bool`
[INFO] [stderr]   --> src/w.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Bool(bool),
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Str`
[INFO] [stderr]   --> src/w.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Str(String),
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/w.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Var(String),
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Int`
[INFO] [stderr]   --> src/w.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     Int,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Fun`
[INFO] [stderr]   --> src/w.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     Fun(Box<Type>, Box<Type>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/w-2ebabc08d3b463ea
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "792d44df561434bb3297cecea742474c3136b7bfe696b2a481144794ce7a2be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "792d44df561434bb3297cecea742474c3136b7bfe696b2a481144794ce7a2be5", kill_on_drop: false }`
[INFO] [stdout] 792d44df561434bb3297cecea742474c3136b7bfe696b2a481144794ce7a2be5