[INFO] cloning repository https://github.com/ReinierMaas/thesis-watcher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ReinierMaas/thesis-watcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReinierMaas%2Fthesis-watcher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReinierMaas%2Fthesis-watcher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a3ab6d5cc64d458efc9a22ac9c75ab0d068b003
[INFO] checking ReinierMaas/thesis-watcher 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%2FReinierMaas%2Fthesis-watcher" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ReinierMaas/thesis-watcher
[INFO] finished tweaking git repo https://github.com/ReinierMaas/thesis-watcher
[INFO] tweaked toml for git repo https://github.com/ReinierMaas/thesis-watcher written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ReinierMaas/thesis-watcher 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/ReinierMaas/thesis-watcher 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1e9df458142bb8e48aca9e7451b9e542b598c5476f90f7f6095098d4a3075b19
[INFO] running `Command { std: "docker" "start" "-a" "1e9df458142bb8e48aca9e7451b9e542b598c5476f90f7f6095098d4a3075b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e9df458142bb8e48aca9e7451b9e542b598c5476f90f7f6095098d4a3075b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e9df458142bb8e48aca9e7451b9e542b598c5476f90f7f6095098d4a3075b19", kill_on_drop: false }`
[INFO] [stdout] 1e9df458142bb8e48aca9e7451b9e542b598c5476f90f7f6095098d4a3075b19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 67708cf54380618f4f0d02068a6339a94af1aa8278d79b154b2fadae977cf70f
[INFO] running `Command { std: "docker" "start" "-a" "67708cf54380618f4f0d02068a6339a94af1aa8278d79b154b2fadae977cf70f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking rgb v0.8.13
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking walkdir v2.2.8
[INFO] [stderr]     Checking regex-syntax v0.6.7
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.5
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking notify v4.0.12
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]    Compiling structopt-derive v0.2.16
[INFO] [stderr]     Checking structopt v0.2.16
[INFO] [stderr]     Checking thesis-watcher v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[derive(StructOpt, Debug)]
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the derive macro `StructOpt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[derive(StructOpt, Debug)]
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the derive macro `StructOpt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thesis-watcher` (bin "thesis-watcher") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `thesis-watcher` (bin "thesis-watcher" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "67708cf54380618f4f0d02068a6339a94af1aa8278d79b154b2fadae977cf70f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67708cf54380618f4f0d02068a6339a94af1aa8278d79b154b2fadae977cf70f", kill_on_drop: false }`
[INFO] [stdout] 67708cf54380618f4f0d02068a6339a94af1aa8278d79b154b2fadae977cf70f