[INFO] cloning repository https://github.com/tehgeekmeister/boggler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tehgeekmeister/boggler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftehgeekmeister%2Fboggler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftehgeekmeister%2Fboggler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f161c645eed8581aa229b7a95c14bc806b0b8e1c
[INFO] checking tehgeekmeister/boggler against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftehgeekmeister%2Fboggler" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tehgeekmeister/boggler on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tehgeekmeister/boggler
[INFO] finished tweaking git repo https://github.com/tehgeekmeister/boggler
[INFO] tweaked toml for git repo https://github.com/tehgeekmeister/boggler written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/tehgeekmeister/boggler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9957525137da5627d43c9742bbc28e4833e7cc8f6f42912bf15bd8d07a2242cf
[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" "9957525137da5627d43c9742bbc28e4833e7cc8f6f42912bf15bd8d07a2242cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9957525137da5627d43c9742bbc28e4833e7cc8f6f42912bf15bd8d07a2242cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9957525137da5627d43c9742bbc28e4833e7cc8f6f42912bf15bd8d07a2242cf", kill_on_drop: false }`
[INFO] [stdout] 9957525137da5627d43c9742bbc28e4833e7cc8f6f42912bf15bd8d07a2242cf
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8ac8389143d96cbd96f3e32133d3d8afffeedf49213296bf0762f4805e8f041
[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" "d8ac8389143d96cbd96f3e32133d3d8afffeedf49213296bf0762f4805e8f041", kill_on_drop: false }`
[INFO] [stderr]     Checking nibble_vec v0.0.3
[INFO] [stderr]     Checking fixedbitset v0.0.5
[INFO] [stderr]     Checking radix_trie v0.0.8
[INFO] [stderr]     Checking petgraph v0.1.11
[INFO] [stderr]     Checking boggler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let f = try!(File::open("./words"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |         trie.insert(try!(line), ());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0392]: parameter `'a` is never used
[INFO] [stdout]   --> src/main.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct PathComponent<'a> {
[INFO] [stdout]    |                      ^^ unused parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0392]: parameter `'a` is never used
[INFO] [stdout]   --> src/main.rs:37:30
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct PathComponentIterator<'a: 'b, 'b> {
[INFO] [stdout]    |                              ^^ unused parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0392`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `boggler`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let f = try!(File::open("./words"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |         trie.insert(try!(line), ());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0392]: parameter `'a` is never used
[INFO] [stdout]   --> src/main.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct PathComponent<'a> {
[INFO] [stdout]    |                      ^^ unused parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0392]: parameter `'a` is never used
[INFO] [stdout]   --> src/main.rs:37:30
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct PathComponentIterator<'a: 'b, 'b> {
[INFO] [stdout]    |                              ^^ unused parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0392`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d8ac8389143d96cbd96f3e32133d3d8afffeedf49213296bf0762f4805e8f041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8ac8389143d96cbd96f3e32133d3d8afffeedf49213296bf0762f4805e8f041", kill_on_drop: false }`
[INFO] [stdout] d8ac8389143d96cbd96f3e32133d3d8afffeedf49213296bf0762f4805e8f041