[INFO] cloning repository https://github.com/yicuiheng/tysh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yicuiheng/tysh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyicuiheng%2Ftysh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyicuiheng%2Ftysh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f9e545d01bad007576a7bde5f841f560a31eca1d
[INFO] checking yicuiheng/tysh against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyicuiheng%2Ftysh" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yicuiheng/tysh on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yicuiheng/tysh
[INFO] finished tweaking git repo https://github.com/yicuiheng/tysh
[INFO] tweaked toml for git repo https://github.com/yicuiheng/tysh written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/yicuiheng/tysh already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62f7f8b67d18a06f4350cce288cfdc5d38ee7f83ce7dd16005afebb9e58ae0fa
[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" "62f7f8b67d18a06f4350cce288cfdc5d38ee7f83ce7dd16005afebb9e58ae0fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62f7f8b67d18a06f4350cce288cfdc5d38ee7f83ce7dd16005afebb9e58ae0fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62f7f8b67d18a06f4350cce288cfdc5d38ee7f83ce7dd16005afebb9e58ae0fa", kill_on_drop: false }`
[INFO] [stdout] 62f7f8b67d18a06f4350cce288cfdc5d38ee7f83ce7dd16005afebb9e58ae0fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--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] 10ea8b384bdd233f61612b3c57e3b34762bb188aacd6545cc6127ef20a22580c
[INFO] running `Command { std: "docker" "start" "-a" "10ea8b384bdd233f61612b3c57e3b34762bb188aacd6545cc6127ef20a22580c", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking tysh v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rest`
[INFO] [stdout]    --> src/expr/parse/expr.rs:140:10
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn bytes(rest: &[char]) -> Result<(Expr, &[char]), ParseError> {
[INFO] [stdout]     |          ^^^^ help: if this is intentional, prefix it with an underscore: `_rest`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rest`
[INFO] [stdout]    --> src/expr/parse/expr.rs:140:10
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn bytes(rest: &[char]) -> Result<(Expr, &[char]), ParseError> {
[INFO] [stdout]     |          ^^^^ help: if this is intentional, prefix it with an underscore: `_rest`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bytes`
[INFO] [stdout]   --> src/expr.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Bytes(Vec<u8>),
[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/expr.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Var(TypeVar),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Context`
[INFO] [stdout]   --> src/expr.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     Context
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 expr.eval();
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bytes`
[INFO] [stdout]   --> src/expr.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Bytes(Vec<u8>),
[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/expr.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Var(TypeVar),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Context`
[INFO] [stdout]   --> src/expr.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     Context
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 expr.eval();
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "10ea8b384bdd233f61612b3c57e3b34762bb188aacd6545cc6127ef20a22580c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10ea8b384bdd233f61612b3c57e3b34762bb188aacd6545cc6127ef20a22580c", kill_on_drop: false }`
[INFO] [stdout] 10ea8b384bdd233f61612b3c57e3b34762bb188aacd6545cc6127ef20a22580c