[INFO] fetching crate mairs 0.1.6...
[INFO] testing mairs-0.1.6 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate mairs 0.1.6 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate mairs 0.1.6
[INFO] finished tweaking crates.io crate mairs 0.1.6
[INFO] tweaked toml for crates.io crate mairs 0.1.6 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mairs 0.1.6 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] [stderr]       Adding colored v2.2.0 (available: v3.1.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a807ca1deb7d113487ea9dad53231412e51af1a671bf95ec4a52776f10f65c2c
[INFO] running `Command { std: "docker" "start" "-a" "a807ca1deb7d113487ea9dad53231412e51af1a671bf95ec4a52776f10f65c2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a807ca1deb7d113487ea9dad53231412e51af1a671bf95ec4a52776f10f65c2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a807ca1deb7d113487ea9dad53231412e51af1a671bf95ec4a52776f10f65c2c", kill_on_drop: false }`
[INFO] [stdout] a807ca1deb7d113487ea9dad53231412e51af1a671bf95ec4a52776f10f65c2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7119b6e405338d3d75db50f46d815e600e87773b650e07f2bf3e1c8d6f3cd999
[INFO] running `Command { std: "docker" "start" "-a" "7119b6e405338d3d75db50f46d815e600e87773b650e07f2bf3e1c8d6f3cd999", kill_on_drop: false }`
[INFO] [stderr]    Compiling colored v2.2.0
[INFO] [stderr]    Compiling mairs v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/lib.rs:323:4
[INFO] [stdout]     |
[INFO] [stdout] 323 | fn main(){
[INFO] [stdout]     |    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:286:70
[INFO] [stdout]     |
[INFO] [stdout] 286 |    pub fn unite<'a>(&'a self, layers:&'a Vec<&mut Layer>) -> Vec<Vec<&Character>>{
[INFO] [stdout]     |                      --               -- the lifetime is named here  ^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 286 |    pub fn unite<'a>(&'a self, layers:&'a Vec<&mut Layer>) -> Vec<Vec<&'a Character>>{
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "7119b6e405338d3d75db50f46d815e600e87773b650e07f2bf3e1c8d6f3cd999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7119b6e405338d3d75db50f46d815e600e87773b650e07f2bf3e1c8d6f3cd999", kill_on_drop: false }`
[INFO] [stdout] 7119b6e405338d3d75db50f46d815e600e87773b650e07f2bf3e1c8d6f3cd999
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58bd61be08c0a87ac0762ce684017b6121cafcbb02eab8369428af27338c667b
[INFO] running `Command { std: "docker" "start" "-a" "58bd61be08c0a87ac0762ce684017b6121cafcbb02eab8369428af27338c667b", kill_on_drop: false }`
[INFO] [stderr]    Compiling mairs v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:286:70
[INFO] [stdout]     |
[INFO] [stdout] 286 |    pub fn unite<'a>(&'a self, layers:&'a Vec<&mut Layer>) -> Vec<Vec<&Character>>{
[INFO] [stdout]     |                      --               -- the lifetime is named here  ^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 286 |    pub fn unite<'a>(&'a self, layers:&'a Vec<&mut Layer>) -> Vec<Vec<&'a Character>>{
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "58bd61be08c0a87ac0762ce684017b6121cafcbb02eab8369428af27338c667b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58bd61be08c0a87ac0762ce684017b6121cafcbb02eab8369428af27338c667b", kill_on_drop: false }`
[INFO] [stdout] 58bd61be08c0a87ac0762ce684017b6121cafcbb02eab8369428af27338c667b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 57be5ec4bd2687310af7b5d426df07bc1037f40fbd533dd2835b9fe56f52d649
[INFO] running `Command { std: "docker" "start" "-a" "57be5ec4bd2687310af7b5d426df07bc1037f40fbd533dd2835b9fe56f52d649", kill_on_drop: false }`
[INFO] [stderr] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:286:70
[INFO] [stderr]     |
[INFO] [stderr] 286 |    pub fn unite<'a>(&'a self, layers:&'a Vec<&mut Layer>) -> Vec<Vec<&Character>>{
[INFO] [stderr]     |                      --               -- the lifetime is named here  ^^^^^^^^^^ the same lifetime is elided here
[INFO] [stderr]     |                      |
[INFO] [stderr]     |                      the lifetime is named here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 286 |    pub fn unite<'a>(&'a self, layers:&'a Vec<&mut Layer>) -> Vec<Vec<&'a Character>>{
[INFO] [stderr]     |                                                                       ++
[INFO] [stderr] 
[INFO] [stderr] warning: `mairs` (lib test) generated 1 warning (run `cargo fix --lib -p mairs --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mairs-3540879590ecf1fc)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "57be5ec4bd2687310af7b5d426df07bc1037f40fbd533dd2835b9fe56f52d649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57be5ec4bd2687310af7b5d426df07bc1037f40fbd533dd2835b9fe56f52d649", kill_on_drop: false }`
[INFO] [stdout] 57be5ec4bd2687310af7b5d426df07bc1037f40fbd533dd2835b9fe56f52d649