[INFO] cloning repository https://github.com/ftnext/sampleproject-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ftnext/sampleproject-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fftnext%2Fsampleproject-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fftnext%2Fsampleproject-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75c59e800cb3e0dcd717a033c88c2ccc3e9d0e9e
[INFO] checking ftnext/sampleproject-rs 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%2Fftnext%2Fsampleproject-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ftnext/sampleproject-rs
[INFO] finished tweaking git repo https://github.com/ftnext/sampleproject-rs
[INFO] tweaked toml for git repo https://github.com/ftnext/sampleproject-rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ftnext/sampleproject-rs 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/ftnext/sampleproject-rs 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 11a3ef9f9306581302f59ef1138f1596f986bdbee2dcf2533fca5db0af7e215c
[INFO] running `Command { std: "docker" "start" "-a" "11a3ef9f9306581302f59ef1138f1596f986bdbee2dcf2533fca5db0af7e215c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11a3ef9f9306581302f59ef1138f1596f986bdbee2dcf2533fca5db0af7e215c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11a3ef9f9306581302f59ef1138f1596f986bdbee2dcf2533fca5db0af7e215c", kill_on_drop: false }`
[INFO] [stdout] 11a3ef9f9306581302f59ef1138f1596f986bdbee2dcf2533fca5db0af7e215c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ed92ef7424ebe7800484e41c3103348b064adc6905602656070285dea7d32d3c
[INFO] running `Command { std: "docker" "start" "-a" "ed92ef7424ebe7800484e41c3103348b064adc6905602656070285dea7d32d3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.13.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]     Checking unindent v0.2.4
[INFO] [stderr]     Checking predicates-core v1.0.9
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling indoc v2.0.6
[INFO] [stderr]     Checking anstyle v1.0.11
[INFO] [stderr]     Checking regex-automata v0.4.10
[INFO] [stderr]    Compiling assert_cmd v2.0.17
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]     Checking termtree v0.5.1
[INFO] [stderr]     Checking predicates-tree v1.0.12
[INFO] [stderr]     Checking predicates v3.1.3
[INFO] [stderr]    Compiling pyo3-build-config v0.26.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking wait-timeout v0.2.1
[INFO] [stderr]     Checking bstr v1.12.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling pyo3-macros-backend v0.26.0
[INFO] [stderr]    Compiling pyo3-ffi v0.26.0
[INFO] [stderr]    Compiling pyo3 v0.26.0
[INFO] [stderr]    Compiling pyo3-macros v0.26.0
[INFO] [stderr]     Checking sample v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]  --> src/lib.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn add_one(number: i32) -> i32 {
[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<i32, Infallible>
[INFO] [stdout]  --> src/lib.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn add_one(number: i32) -> i32 {
[INFO] [stdout]   |                            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sample` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `sample` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "ed92ef7424ebe7800484e41c3103348b064adc6905602656070285dea7d32d3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed92ef7424ebe7800484e41c3103348b064adc6905602656070285dea7d32d3c", kill_on_drop: false }`
[INFO] [stdout] ed92ef7424ebe7800484e41c3103348b064adc6905602656070285dea7d32d3c
