[INFO] fetching crate lcs-png-diff-server 0.1.6...
[INFO] checking lcs-png-diff-server-0.1.6 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate lcs-png-diff-server 0.1.6 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate lcs-png-diff-server 0.1.6
[INFO] finished tweaking crates.io crate lcs-png-diff-server 0.1.6
[INFO] tweaked toml for crates.io crate lcs-png-diff-server 0.1.6 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lcs-png-diff-server 0.1.6 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 lcs-png-diff-server 0.1.6 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-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] 0c92eaa1a307fff50eddc530ffeef4d7f2820da07042aaa5e76f781482ee376b
[INFO] running `Command { std: "docker" "start" "-a" "0c92eaa1a307fff50eddc530ffeef4d7f2820da07042aaa5e76f781482ee376b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c92eaa1a307fff50eddc530ffeef4d7f2820da07042aaa5e76f781482ee376b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c92eaa1a307fff50eddc530ffeef4d7f2820da07042aaa5e76f781482ee376b", kill_on_drop: false }`
[INFO] [stdout] 0c92eaa1a307fff50eddc530ffeef4d7f2820da07042aaa5e76f781482ee376b
[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] cafa534567fc8bfdc8b10a9ae9ed381293e5afbf2455b774cdf24349893adae9
[INFO] running `Command { std: "docker" "start" "-a" "cafa534567fc8bfdc8b10a9ae9ed381293e5afbf2455b774cdf24349893adae9", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]     Checking tracing-core v0.1.28
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking hashbrown v0.12.2
[INFO] [stderr]    Compiling serde_derive v1.0.139
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling openssl-sys v0.9.75
[INFO] [stderr]     Checking crc32fast v1.3.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling serde v1.0.139
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.3
[INFO] [stderr]     Checking indexmap v1.9.1
[INFO] [stderr]     Checking alloc-stdlib v0.2.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling openssl v0.10.41
[INFO] [stderr]     Checking want v0.3.0
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[INFO] [stderr]     Checking brotli-decompressor v2.3.2
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[INFO] [stderr]    Compiling serde_json v1.0.82
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.10
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
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[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking deflate v1.0.0
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[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking bytemuck v1.10.0
[INFO] [stderr]     Checking rusty_pool v0.7.0
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[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.4
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[INFO] [stderr]     Checking image v0.24.2
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking tracing-subscriber v0.3.14
[INFO] [stderr]     Checking iri-string v0.4.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]    Compiling pin-project-internal v1.0.11
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling async-trait v0.1.56
[INFO] [stderr]    Compiling clap_derive v3.2.7
[INFO] [stderr]     Checking tokio v1.19.2
[INFO] [stderr]     Checking axum-core v0.2.7
[INFO] [stderr]     Checking tracing v0.1.35
[INFO] [stderr]     Checking pin-project v1.0.11
[INFO] [stderr]     Checking clap v3.2.10
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking async-compression v0.3.14
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking tower-http v0.3.4
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking lcs-png-diff v0.3.1
[INFO] [stderr]     Checking hyper v0.14.20
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking axum v0.5.12
[INFO] [stderr]     Checking reqwest v0.11.11
[INFO] [stderr]     Checking axum-extra v0.3.6
[INFO] [stderr]     Checking lcs-png-diff-server v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     log_level: String,
[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<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     addr: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     static_dir: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lcs-png-diff-server` (bin "lcs-png-diff-server" test) due to 3 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<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     log_level: String,
[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<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     addr: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     static_dir: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lcs-png-diff-server` (bin "lcs-png-diff-server") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "cafa534567fc8bfdc8b10a9ae9ed381293e5afbf2455b774cdf24349893adae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cafa534567fc8bfdc8b10a9ae9ed381293e5afbf2455b774cdf24349893adae9", kill_on_drop: false }`
[INFO] [stdout] cafa534567fc8bfdc8b10a9ae9ed381293e5afbf2455b774cdf24349893adae9