[INFO] fetching crate usage-tracker 0.3.2...
[INFO] checking usage-tracker-0.3.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate usage-tracker 0.3.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate usage-tracker 0.3.2
[INFO] finished tweaking crates.io crate usage-tracker 0.3.2
[INFO] tweaked toml for crates.io crate usage-tracker 0.3.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate usage-tracker 0.3.2 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] crate crates.io crate usage-tracker 0.3.2 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] 09c9ea9295da42e2877cb1d903a5edb6c0654bd39d4af7a40880c2e7208ee3b8
[INFO] running `Command { std: "docker" "start" "-a" "09c9ea9295da42e2877cb1d903a5edb6c0654bd39d4af7a40880c2e7208ee3b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09c9ea9295da42e2877cb1d903a5edb6c0654bd39d4af7a40880c2e7208ee3b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09c9ea9295da42e2877cb1d903a5edb6c0654bd39d4af7a40880c2e7208ee3b8", kill_on_drop: false }`
[INFO] [stdout] 09c9ea9295da42e2877cb1d903a5edb6c0654bd39d4af7a40880c2e7208ee3b8
[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] 35348a03fb0fd8c705bffba5dd0ac0149f2c61711844a5a55e775ea901b0819d
[INFO] running `Command { std: "docker" "start" "-a" "35348a03fb0fd8c705bffba5dd0ac0149f2c61711844a5a55e775ea901b0819d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]     Checking home v0.5.3
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking users v0.11.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking standard_paths v1.1.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking os_type v2.4.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking clap v3.1.18
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking ron v0.7.0
[INFO] [stderr]     Checking human-panic v1.0.3
[INFO] [stderr]     Checking usage-tracker v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated type alias `std::panic::PanicInfo`: use `PanicHookInfo` instead
[INFO] [stdout]    --> src/main.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | /     setup_panic!(Metadata {
[INFO] [stdout] 141 | |         authors: env!("CARGO_PKG_AUTHORS").into(),
[INFO] [stdout] 142 | |         homepage: env!("CARGO_PKG_HOMEPAGE").into(),
[INFO] [stdout] 143 | |         name: env!("CARGO_PKG_NAME").into(),
[INFO] [stdout] 144 | |         version: env!("CARGO_PKG_VERSION").into(),
[INFO] [stdout] 145 | |     });
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `setup_panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::panic::PanicInfo`: use `PanicHookInfo` instead
[INFO] [stdout]    --> src/main.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | /     setup_panic!(Metadata {
[INFO] [stdout] 141 | |         authors: env!("CARGO_PKG_AUTHORS").into(),
[INFO] [stdout] 142 | |         homepage: env!("CARGO_PKG_HOMEPAGE").into(),
[INFO] [stdout] 143 | |         name: env!("CARGO_PKG_NAME").into(),
[INFO] [stdout] 144 | |         version: env!("CARGO_PKG_VERSION").into(),
[INFO] [stdout] 145 | |     });
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `setup_panic` (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<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 | /         /// The name of the new object.
[INFO] [stdout] 48 | |         name: 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:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 | /         /// The name of the object to prune.
[INFO] [stdout] 84 | |         name: 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:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 | /         /// The name of the object to remove.
[INFO] [stdout] 90 | |         name: 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:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 | /         /// The name of the object.
[INFO] [stdout] 96 | |         name: 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:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 | /         /// The name of the object to predict for.
[INFO] [stdout] 109 | |         name: 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:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 | /         /// The name of the object that was used.
[INFO] [stdout] 134 | |         name: 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:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 | /         /// The name of the new object.
[INFO] [stdout] 48 | |         name: 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:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 | /         /// The name of the object to prune.
[INFO] [stdout] 84 | |         name: 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:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 | /         /// The name of the object to remove.
[INFO] [stdout] 90 | |         name: 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:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 | /         /// The name of the object.
[INFO] [stdout] 96 | |         name: 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:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 | /         /// The name of the object to predict for.
[INFO] [stdout] 109 | |         name: 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:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 | /         /// The name of the object that was used.
[INFO] [stdout] 134 | |         name: String,
[INFO] [stdout]     | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `usage-tracker` (bin "usage-tracker") due to 6 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `usage-tracker` (bin "usage-tracker" test) due to 6 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "35348a03fb0fd8c705bffba5dd0ac0149f2c61711844a5a55e775ea901b0819d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35348a03fb0fd8c705bffba5dd0ac0149f2c61711844a5a55e775ea901b0819d", kill_on_drop: false }`
[INFO] [stdout] 35348a03fb0fd8c705bffba5dd0ac0149f2c61711844a5a55e775ea901b0819d