[INFO] fetching crate heckmv 1.0.1...
[INFO] checking heckmv-1.0.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate heckmv 1.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate heckmv 1.0.1
[INFO] finished tweaking crates.io crate heckmv 1.0.1
[INFO] tweaked toml for crates.io crate heckmv 1.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate heckmv 1.0.1 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 crates.io crate heckmv 1.0.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 96a18dd760a2ea85248270ec948e2233bd8fa7cb084f25d28570d058f449d9b9
[INFO] running `Command { std: "docker" "start" "-a" "96a18dd760a2ea85248270ec948e2233bd8fa7cb084f25d28570d058f449d9b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96a18dd760a2ea85248270ec948e2233bd8fa7cb084f25d28570d058f449d9b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96a18dd760a2ea85248270ec948e2233bd8fa7cb084f25d28570d058f449d9b9", kill_on_drop: false }`
[INFO] [stdout] 96a18dd760a2ea85248270ec948e2233bd8fa7cb084f25d28570d058f449d9b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] dde1a7c43e2baaa647c6824fe3a8488c530134e4146e7ae238e06e0999d6f60c
[INFO] running `Command { std: "docker" "start" "-a" "dde1a7c43e2baaa647c6824fe3a8488c530134e4146e7ae238e06e0999d6f60c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]     Checking heck v0.4.1
[INFO] [stderr]     Checking sarge v7.0.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling errata-macros v0.2.0
[INFO] [stderr]     Checking errata v2.1.0
[INFO] [stderr]     Checking heckmv v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | / sarge! {
[INFO] [stdout]  8 | |     Args,
[INFO] [stdout]  9 | |
[INFO] [stdout] 10 | |     #ok 'c' case: String,
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     'h' help: bool,
[INFO] [stdout] 15 | | }
[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 macro `$crate::__parse_arg` which comes from the expansion of the macro `sarge` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/main.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | / sarge! {
[INFO] [stdout]  8 | |     Args,
[INFO] [stdout]  9 | |
[INFO] [stdout] 10 | |     #ok 'c' case: String,
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     'h' help: bool,
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__parse_arg` which comes from the expansion of the macro `sarge` (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<bool, Infallible>
[INFO] [stdout]   --> src/main.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | / sarge! {
[INFO] [stdout]  8 | |     Args,
[INFO] [stdout]  9 | |
[INFO] [stdout] 10 | |     #ok 'c' case: String,
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     'h' help: bool,
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__parse_arg` which comes from the expansion of the macro `sarge` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/main.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | / sarge! {
[INFO] [stdout]  8 | |     Args,
[INFO] [stdout]  9 | |
[INFO] [stdout] 10 | |     #ok 'c' case: String,
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     'h' help: bool,
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__parse_arg` which comes from the expansion of the macro `sarge` (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:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | / sarge! {
[INFO] [stdout]  8 | |     Args,
[INFO] [stdout]  9 | |
[INFO] [stdout] 10 | |     #ok 'c' case: String,
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     'h' help: bool,
[INFO] [stdout] 15 | | }
[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 macro `$crate::__parse_arg` which comes from the expansion of the macro `sarge` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/main.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | / sarge! {
[INFO] [stdout]  8 | |     Args,
[INFO] [stdout]  9 | |
[INFO] [stdout] 10 | |     #ok 'c' case: String,
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     'h' help: bool,
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__parse_arg` which comes from the expansion of the macro `sarge` (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<bool, Infallible>
[INFO] [stdout]   --> src/main.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | / sarge! {
[INFO] [stdout]  8 | |     Args,
[INFO] [stdout]  9 | |
[INFO] [stdout] 10 | |     #ok 'c' case: String,
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     'h' help: bool,
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__parse_arg` which comes from the expansion of the macro `sarge` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/main.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | / sarge! {
[INFO] [stdout]  8 | |     Args,
[INFO] [stdout]  9 | |
[INFO] [stdout] 10 | |     #ok 'c' case: String,
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     'h' help: bool,
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__parse_arg` which comes from the expansion of the macro `sarge` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `heckmv` (bin "heckmv" test) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `heckmv` (bin "heckmv") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "dde1a7c43e2baaa647c6824fe3a8488c530134e4146e7ae238e06e0999d6f60c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dde1a7c43e2baaa647c6824fe3a8488c530134e4146e7ae238e06e0999d6f60c", kill_on_drop: false }`
[INFO] [stdout] dde1a7c43e2baaa647c6824fe3a8488c530134e4146e7ae238e06e0999d6f60c