[INFO] cloning repository https://github.com/Ella-Hoeppner/GSE
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ella-Hoeppner/GSE" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElla-Hoeppner%2FGSE", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElla-Hoeppner%2FGSE'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4bd240a481523c61278a1f22ae4030f48855699c
[INFO] checking Ella-Hoeppner/GSE against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElla-Hoeppner%2FGSE" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ella-Hoeppner/GSE
[INFO] finished tweaking git repo https://github.com/Ella-Hoeppner/GSE
[INFO] tweaked toml for git repo https://github.com/Ella-Hoeppner/GSE written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ella-Hoeppner/GSE on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Ella-Hoeppner/GSE already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cc336ff94515be72838bc8f6bb0c27a453df215e840a7132e924c7f6bc71db9
[INFO] running `Command { std: "docker" "start" "-a" "3cc336ff94515be72838bc8f6bb0c27a453df215e840a7132e924c7f6bc71db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cc336ff94515be72838bc8f6bb0c27a453df215e840a7132e924c7f6bc71db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cc336ff94515be72838bc8f6bb0c27a453df215e840a7132e924c7f6bc71db9", kill_on_drop: false }`
[INFO] [stdout] 3cc336ff94515be72838bc8f6bb0c27a453df215e840a7132e924c7f6bc71db9
[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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbdd6ad4b6c7620e72325e2e91242eb72fc58b9c22b29ebd30483105a85a9c5b
[INFO] running `Command { std: "docker" "start" "-a" "bbdd6ad4b6c7620e72325e2e91242eb72fc58b9c22b29ebd30483105a85a9c5b", kill_on_drop: false }`
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking fsexp v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<AstDiff<NewL, NewI>, Never>
[INFO] [stdout]    --> src/diff.rs:429:5
[INFO] [stdout]     |
[INFO] [stdout] 429 | /     self
[INFO] [stdout] 430 | |       .try_map(&|ast, path| Ok::<_, Never>(ast_mapper(ast, path)))
[INFO] [stdout]     | |__________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Ast<NewL, NewI>, Never>
[INFO] [stdout]    --> src/diff.rs:430:29
[INFO] [stdout]     |
[INFO] [stdout] 430 |       .try_map(&|ast, path| Ok::<_, Never>(ast_mapper(ast, path)))
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<usize>, Never>
[INFO] [stdout]    --> src/diff.rs:467:56
[INFO] [stdout]     |
[INFO] [stdout] 467 |                 .modify_paths::<Never>(&|mut other_path| {
[INFO] [stdout]     |  ________________________________________________________^
[INFO] [stdout] 468 | |                 if is_prefix_of(&path[0..path.len() - 1], &other_path)
[INFO] [stdout] 469 | |                   && *path.last().unwrap() <= other_path[path.len() - 1]
[INFO] [stdout] ...   |
[INFO] [stdout] 473 | |                 Ok(other_path)
[INFO] [stdout] 474 | |               })
[INFO] [stdout]     | |_______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<usize>, Never>
[INFO] [stdout]    --> src/diff.rs:473:17
[INFO] [stdout]     |
[INFO] [stdout] 473 |                 Ok(other_path)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fsexp` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<AstDiff<NewL, NewI>, Never>
[INFO] [stdout]    --> src/diff.rs:429:5
[INFO] [stdout]     |
[INFO] [stdout] 429 | /     self
[INFO] [stdout] 430 | |       .try_map(&|ast, path| Ok::<_, Never>(ast_mapper(ast, path)))
[INFO] [stdout]     | |__________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Ast<NewL, NewI>, Never>
[INFO] [stdout]    --> src/diff.rs:430:29
[INFO] [stdout]     |
[INFO] [stdout] 430 |       .try_map(&|ast, path| Ok::<_, Never>(ast_mapper(ast, path)))
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<usize>, Never>
[INFO] [stdout]    --> src/diff.rs:467:56
[INFO] [stdout]     |
[INFO] [stdout] 467 |                 .modify_paths::<Never>(&|mut other_path| {
[INFO] [stdout]     |  ________________________________________________________^
[INFO] [stdout] 468 | |                 if is_prefix_of(&path[0..path.len() - 1], &other_path)
[INFO] [stdout] 469 | |                   && *path.last().unwrap() <= other_path[path.len() - 1]
[INFO] [stdout] ...   |
[INFO] [stdout] 473 | |                 Ok(other_path)
[INFO] [stdout] 474 | |               })
[INFO] [stdout]     | |_______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<usize>, Never>
[INFO] [stdout]    --> src/diff.rs:473:17
[INFO] [stdout]     |
[INFO] [stdout] 473 |                 Ok(other_path)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fsexp` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "bbdd6ad4b6c7620e72325e2e91242eb72fc58b9c22b29ebd30483105a85a9c5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbdd6ad4b6c7620e72325e2e91242eb72fc58b9c22b29ebd30483105a85a9c5b", kill_on_drop: false }`
[INFO] [stdout] bbdd6ad4b6c7620e72325e2e91242eb72fc58b9c22b29ebd30483105a85a9c5b
