[INFO] fetching crate wall-echain 0.1.2...
[INFO] checking wall-echain-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate wall-echain 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate wall-echain 0.1.2
[INFO] finished tweaking crates.io crate wall-echain 0.1.2
[INFO] tweaked toml for crates.io crate wall-echain 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wall-echain 0.1.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 234 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding subtle v2.4.1 (available: v2.6.1)
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d63af9dd56353c5f2c2b039aa891052ec6b8cb93217c7578cf432e85773c8ac9
[INFO] running `Command { std: "docker" "start" "-a" "d63af9dd56353c5f2c2b039aa891052ec6b8cb93217c7578cf432e85773c8ac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d63af9dd56353c5f2c2b039aa891052ec6b8cb93217c7578cf432e85773c8ac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d63af9dd56353c5f2c2b039aa891052ec6b8cb93217c7578cf432e85773c8ac9", kill_on_drop: false }`
[INFO] [stdout] d63af9dd56353c5f2c2b039aa891052ec6b8cb93217c7578cf432e85773c8ac9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f2fb5e90010a1c6f9a9a4533554ee91f2a9d0d92665616486a8fd79156e9a710
[INFO] running `Command { std: "docker" "start" "-a" "f2fb5e90010a1c6f9a9a4533554ee91f2a9d0d92665616486a8fd79156e9a710", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking universal-hash v0.4.1
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]     Checking cpuid-bool v0.2.0
[INFO] [stderr]    Compiling const_fn v0.4.11
[INFO] [stderr]     Checking polyval v0.4.5
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking aes-soft v0.6.4
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking pin-project v1.1.10
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking openssl-sys v0.9.111
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking crypto-mac v0.10.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.1
[INFO] [stderr]     Checking hmac v0.10.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking aes v0.6.0
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking zerovec v0.11.5
[INFO] [stderr]     Checking zerotrie v0.2.3
[INFO] [stderr]    Compiling wasm-bindgen v0.2.105
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking ghash v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking ctr v0.6.0
[INFO] [stderr]     Checking aead v0.3.2
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]     Checking tinystr v0.8.2
[INFO] [stderr]     Checking potential_utf v0.1.4
[INFO] [stderr]     Checking icu_collections v2.1.1
[INFO] [stderr]     Checking openssl v0.10.75
[INFO] [stderr]     Checking icu_locale_core v2.1.1
[INFO] [stderr]    Compiling cookie v0.14.4
[INFO] [stderr]     Checking aes-gcm v0.8.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]     Checking icu_provider v2.1.1
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking icu_properties v2.1.1
[INFO] [stderr]     Checking hkdf v0.10.0
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking polling v3.11.0
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]    Compiling http-types v2.12.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking async-io v2.6.0
[INFO] [stderr]     Checking serde_qs v0.8.5
[INFO] [stderr]     Checking serde_json v1.0.145
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-std v1.13.2
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking infer v0.2.3
[INFO] [stderr]     Checking js-sys v0.3.82
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking native-tls v0.2.14
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]     Checking hyper v0.13.10
[INFO] [stderr]     Checking web-sys v0.3.82
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking http-client v6.5.3
[INFO] [stderr]     Checking surf v2.3.2
[INFO] [stderr]     Checking wall-echain v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:89:17
[INFO] [stdout]    |
[INFO] [stdout] 89 |             id: self.id.parse().unwrap(),
[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 `wall-echain` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:89:17
[INFO] [stdout]    |
[INFO] [stdout] 89 |             id: self.id.parse().unwrap(),
[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 `wall-echain` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f2fb5e90010a1c6f9a9a4533554ee91f2a9d0d92665616486a8fd79156e9a710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2fb5e90010a1c6f9a9a4533554ee91f2a9d0d92665616486a8fd79156e9a710", kill_on_drop: false }`
[INFO] [stdout] f2fb5e90010a1c6f9a9a4533554ee91f2a9d0d92665616486a8fd79156e9a710