[INFO] updating cached repository https://github.com/sunfishcode/codeexpr
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c569cd95ed0c00abb2e28d0985e464ba52a1e3b0
[INFO] checking sunfishcode/codeexpr against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunfishcode%2Fcodeexpr" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sunfishcode/codeexpr on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sunfishcode/codeexpr
[INFO] finished tweaking git repo https://github.com/sunfishcode/codeexpr
[INFO] tweaked toml for git repo https://github.com/sunfishcode/codeexpr written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/sunfishcode/codeexpr already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a55072780e69890085020216dd1c9f09e462cf5478d10035e3444bfabb8cf261
[INFO] running `"docker" "start" "-a" "a55072780e69890085020216dd1c9f09e462cf5478d10035e3444bfabb8cf261"`
[INFO] [stderr]     Checking codeexpr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `IAddImm`
[INFO] [stderr]   --> src/codeexpr.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 | /     IAddImm {
[INFO] [stderr] 59 | |         /// The base value.
[INFO] [stderr] 60 | |         base: Rc<CodeExpr>,
[INFO] [stderr] 61 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |         result_type: Type,
[INFO] [stderr] 67 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Call`
[INFO] [stderr]    --> src/codeexpr.rs:90:5
[INFO] [stderr]     |
[INFO] [stderr] 90  | /     Call {
[INFO] [stderr] 91  | |         /// The expression to call. May be a `Symbol` for a direct call, or
[INFO] [stderr] 92  | |         /// other kinds of expression for indirect calls.
[INFO] [stderr] 93  | |         callee: Rc<CodeExpr>,
[INFO] [stderr] ...   |
[INFO] [stderr] 99  | |         result_type: Type,
[INFO] [stderr] 100 | |     },
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `symbol_name`
[INFO] [stderr]    --> src/codeexpr.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     pub fn symbol_name(&self) -> &ExternalName {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `result_type`
[INFO] [stderr]    --> src/codeexpr.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub fn result_type(&self, isa: &dyn TargetIsa) -> Type {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `IAddImm`
[INFO] [stderr]   --> src/codeexpr.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 | /     IAddImm {
[INFO] [stderr] 59 | |         /// The base value.
[INFO] [stderr] 60 | |         base: Rc<CodeExpr>,
[INFO] [stderr] 61 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |         result_type: Type,
[INFO] [stderr] 67 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Call`
[INFO] [stderr]    --> src/codeexpr.rs:90:5
[INFO] [stderr]     |
[INFO] [stderr] 90  | /     Call {
[INFO] [stderr] 91  | |         /// The expression to call. May be a `Symbol` for a direct call, or
[INFO] [stderr] 92  | |         /// other kinds of expression for indirect calls.
[INFO] [stderr] 93  | |         callee: Rc<CodeExpr>,
[INFO] [stderr] ...   |
[INFO] [stderr] 99  | |         result_type: Type,
[INFO] [stderr] 100 | |     },
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `symbol_name`
[INFO] [stderr]    --> src/codeexpr.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     pub fn symbol_name(&self) -> &ExternalName {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `result_type`
[INFO] [stderr]    --> src/codeexpr.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub fn result_type(&self, isa: &dyn TargetIsa) -> Type {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "a55072780e69890085020216dd1c9f09e462cf5478d10035e3444bfabb8cf261"`
[INFO] running `"docker" "rm" "-f" "a55072780e69890085020216dd1c9f09e462cf5478d10035e3444bfabb8cf261"`
[INFO] [stdout] a55072780e69890085020216dd1c9f09e462cf5478d10035e3444bfabb8cf261