[INFO] fetching crate minimad 0.6.7...
[INFO] checking minimad-0.6.7 against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] extracting crate minimad 0.6.7 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate minimad 0.6.7 on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate minimad 0.6.7
[INFO] finished tweaking crates.io crate minimad 0.6.7
[INFO] tweaked toml for crates.io crate minimad 0.6.7 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate minimad 0.6.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43706d7154bcaf1e7102f26cc55d1a26e56055680724f2cc495dfbc451f937c7
[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" "43706d7154bcaf1e7102f26cc55d1a26e56055680724f2cc495dfbc451f937c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43706d7154bcaf1e7102f26cc55d1a26e56055680724f2cc495dfbc451f937c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43706d7154bcaf1e7102f26cc55d1a26e56055680724f2cc495dfbc451f937c7", kill_on_drop: false }`
[INFO] [stdout] 43706d7154bcaf1e7102f26cc55d1a26e56055680724f2cc495dfbc451f937c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c64fa4b6c0479890b790345e9980597ea720ce91138ab655c12c1005c8a5796
[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" "2c64fa4b6c0479890b790345e9980597ea720ce91138ab655c12c1005c8a5796", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking minimad v0.6.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `arg_idx` is never read
[INFO] [stdout]    --> src/inline_template.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |             arg_idx += 1;
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 190 |         let composite = mad_inline!("**$1:** `$0`", "π*r²", "area");
[INFO] [stdout]     |                         ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/inline_template.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |         let mut composite = TEMPLATE.raw_composite();
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 178 |         let composite = mad_inline!("some `code`");
[INFO] [stdout]     |                         -------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> examples/late-composite/main.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let (args, c) = lc.explode();
[INFO] [stdout]    |          ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/late-composite/main.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut composite = self.template.raw_composite();
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "2c64fa4b6c0479890b790345e9980597ea720ce91138ab655c12c1005c8a5796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c64fa4b6c0479890b790345e9980597ea720ce91138ab655c12c1005c8a5796", kill_on_drop: false }`
[INFO] [stdout] 2c64fa4b6c0479890b790345e9980597ea720ce91138ab655c12c1005c8a5796