[INFO] fetching crate gtree 1.0.1...
[INFO] checking gtree-1.0.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate gtree 1.0.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate gtree 1.0.1
[INFO] finished tweaking crates.io crate gtree 1.0.1
[INFO] tweaked toml for crates.io crate gtree 1.0.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate gtree 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 gtree 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 1f95ddad3eab1d89d3041fcf1ebf752bc86052a972ce7ad9efe5b9074825c7bb
[INFO] running `Command { std: "docker" "start" "-a" "1f95ddad3eab1d89d3041fcf1ebf752bc86052a972ce7ad9efe5b9074825c7bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f95ddad3eab1d89d3041fcf1ebf752bc86052a972ce7ad9efe5b9074825c7bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f95ddad3eab1d89d3041fcf1ebf752bc86052a972ce7ad9efe5b9074825c7bb", kill_on_drop: false }`
[INFO] [stdout] 1f95ddad3eab1d89d3041fcf1ebf752bc86052a972ce7ad9efe5b9074825c7bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] a33c143b1fc229ea5fcdbd0557c25091f6b29d6a3d3604b00d93fbbe6e633839
[INFO] running `Command { std: "docker" "start" "-a" "a33c143b1fc229ea5fcdbd0557c25091f6b29d6a3d3604b00d93fbbe6e633839", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling miniz_oxide v0.5.3
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling ascii v0.9.3
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling object v0.28.4
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling rustls v0.20.6
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.9.1
[INFO] [stderr]    Compiling ryu v1.0.10
[INFO] [stderr]    Compiling combine v3.8.1
[INFO] [stderr]    Compiling itoa v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling libz-sys v1.1.8
[INFO] [stderr]    Compiling openssl-sys v0.9.74
[INFO] [stderr]    Compiling libssh2-sys v0.2.23
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling libgit2-sys v0.13.4+1.4.2
[INFO] [stderr]    Compiling uncased v0.9.7
[INFO] [stderr]    Compiling async-trait v0.1.56
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking rustls-pemfile v0.3.0
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]    Compiling figment v0.10.6
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]     Checking inlinable_string v0.1.15
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking xdg v2.4.1
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki-roots v0.22.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling pear_codegen v0.2.3
[INFO] [stderr]    Compiling graphql-parser v0.2.3
[INFO] [stderr]     Checking tokio v1.19.2
[INFO] [stderr]     Checking futures-util v0.3.21
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking pear v0.2.3
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking tracing-subscriber v0.3.11
[INFO] [stderr]    Compiling darling_macro v0.12.4
[INFO] [stderr]    Compiling darling v0.12.4
[INFO] [stderr]    Compiling derive_builder_core v0.10.2
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]    Compiling clap_derive v3.1.18
[INFO] [stderr]     Checking tracing-flame v0.2.0
[INFO] [stderr]    Compiling derive_builder_macro v0.10.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking derive_builder v0.10.2
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking clap v3.1.18
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking hyper v0.14.19
[INFO] [stderr]    Compiling graphql-introspection-query v0.2.0
[INFO] [stderr]    Compiling graphql_client_codegen v0.10.0
[INFO] [stderr]     Checking hyper-rustls v0.23.0
[INFO] [stderr]     Checking reqwest v0.11.10
[INFO] [stderr]    Compiling graphql_query_derive v0.10.0
[INFO] [stderr]     Checking graphql_client v0.10.0
[INFO] [stderr]     Checking gitlab v0.1501.0
[INFO] [stderr]     Checking git2 v0.14.4
[INFO] [stderr]     Checking gtree v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/config/args.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     /// Only operate on this subtree
[INFO] [stdout] 11 | |     #[clap(global = true)]
[INFO] [stdout] 12 | |     pub scope: Option<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/config/args.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     /// Only operate on this subtree
[INFO] [stdout] 11 | |     #[clap(global = true)]
[INFO] [stdout] 12 | |     pub scope: Option<String>,
[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 `gtree` (bin "gtree" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `gtree` (bin "gtree") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a33c143b1fc229ea5fcdbd0557c25091f6b29d6a3d3604b00d93fbbe6e633839", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a33c143b1fc229ea5fcdbd0557c25091f6b29d6a3d3604b00d93fbbe6e633839", kill_on_drop: false }`
[INFO] [stdout] a33c143b1fc229ea5fcdbd0557c25091f6b29d6a3d3604b00d93fbbe6e633839