[INFO] fetching crate kalk 3.2.1...
[INFO] checking kalk-3.2.1 against try#e90f1ff63e694965281f833819a486da29772bdf for pr-146167
[INFO] extracting crate kalk 3.2.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate kalk 3.2.1
[INFO] finished tweaking crates.io crate kalk 3.2.1
[INFO] tweaked toml for crates.io crate kalk 3.2.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kalk 3.2.1 on toolchain e90f1ff63e694965281f833819a486da29772bdf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e90f1ff63e694965281f833819a486da29772bdf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e90f1ff63e694965281f833819a486da29772bdf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 53 packages to latest compatible versions
[INFO] [stderr]       Adding test-case v1.2.3 (available: v3.3.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e90f1ff63e694965281f833819a486da29772bdf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+e90f1ff63e694965281f833819a486da29772bdf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3ff983a1288c735659958bbbcd8e308deb8a80fe482cf93115dd94ebd0ecf19
[INFO] running `Command { std: "docker" "start" "-a" "a3ff983a1288c735659958bbbcd8e308deb8a80fe482cf93115dd94ebd0ecf19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3ff983a1288c735659958bbbcd8e308deb8a80fe482cf93115dd94ebd0ecf19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3ff983a1288c735659958bbbcd8e308deb8a80fe482cf93115dd94ebd0ecf19", kill_on_drop: false }`
[INFO] [stdout] a3ff983a1288c735659958bbbcd8e308deb8a80fe482cf93115dd94ebd0ecf19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+e90f1ff63e694965281f833819a486da29772bdf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61791714c2c037986343afe7faf0d01b7a39e5d85a8dab369f4da4309e603c33
[INFO] running `Command { std: "docker" "start" "-a" "61791714c2c037986343afe7faf0d01b7a39e5d85a8dab369f4da4309e603c33", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.101
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.8
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling rug v1.28.0
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.51
[INFO] [stderr]    Compiling test-case v1.2.3
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.101
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.101
[INFO] [stderr]     Checking wasm-bindgen v0.2.101
[INFO] [stderr]     Checking js-sys v0.3.78
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.51
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.51
[INFO] [stderr]     Checking kalk v3.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `test_pow_unary` is never used
[INFO] [stdout]    --> src/parser.rs:969:8
[INFO] [stdout]     |
[INFO] [stdout] 969 |     fn test_pow_unary() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/numerical.rs:228:34
[INFO] [stdout]     |
[INFO] [stdout] 228 |     fn get_context(symbol_table: &mut SymbolTable) -> interpreter::Context {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 228 |     fn get_context(symbol_table: &mut SymbolTable) -> interpreter::Context<'_> {
[INFO] [stdout]     |                                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 10s
[INFO] running `Command { std: "docker" "inspect" "61791714c2c037986343afe7faf0d01b7a39e5d85a8dab369f4da4309e603c33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61791714c2c037986343afe7faf0d01b7a39e5d85a8dab369f4da4309e603c33", kill_on_drop: false }`
[INFO] [stdout] 61791714c2c037986343afe7faf0d01b7a39e5d85a8dab369f4da4309e603c33