[INFO] fetching crate tunneler 0.4.1...
[INFO] checking tunneler-0.4.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate tunneler 0.4.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate tunneler 0.4.1
[INFO] finished tweaking crates.io crate tunneler 0.4.1
[INFO] tweaked toml for crates.io crate tunneler 0.4.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tunneler 0.4.1 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 tunneler 0.4.1 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 04ec0df57c8e563e4015b234be6ac92760b0fa7ee291618b9e62e55c9758e13d
[INFO] running `Command { std: "docker" "start" "-a" "04ec0df57c8e563e4015b234be6ac92760b0fa7ee291618b9e62e55c9758e13d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04ec0df57c8e563e4015b234be6ac92760b0fa7ee291618b9e62e55c9758e13d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04ec0df57c8e563e4015b234be6ac92760b0fa7ee291618b9e62e55c9758e13d", kill_on_drop: false }`
[INFO] [stdout] 04ec0df57c8e563e4015b234be6ac92760b0fa7ee291618b9e62e55c9758e13d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 81b75ba25c3d63aa776d19c0251aebe438f0973617dfe21d54d730ab98b607d5
[INFO] running `Command { std: "docker" "start" "-a" "81b75ba25c3d63aa776d19c0251aebe438f0973617dfe21d54d730ab98b607d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling tokio v1.6.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ipnet v2.3.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking predicates-core v1.0.2
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking simple_logger v1.11.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking fragile v1.0.0
[INFO] [stderr]     Checking downcast v0.10.0
[INFO] [stderr]     Checking predicates-tree v1.0.2
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking predicates v1.0.8
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling mockall_derive v0.9.1
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking mockall v0.9.1
[INFO] [stderr]     Checking trust-dns-proto v0.20.3
[INFO] [stderr]     Checking tokio-rustls v0.22.0
[INFO] [stderr]     Checking tokio-stream v0.1.6
[INFO] [stderr]     Checking tokio-test v0.4.2
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking trust-dns-client v0.20.3
[INFO] [stderr]     Checking trust-dns-resolver v0.20.3
[INFO] [stderr]     Checking trust-dns-server v0.20.3
[INFO] [stderr]     Checking tunneler v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/common/cli.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | /         #[structopt(default_value = "", long, env)]
[INFO] [stdout] 18 | |         client_suffix: 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 `tunneler` (lib) due to 5 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/common/cli.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | /         #[structopt(long, env)]
[INFO] [stdout] 22 | |         ca_cert: PathBuf,
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/common/cli.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | /         #[structopt(long, env)]
[INFO] [stdout] 24 | |         cert: PathBuf,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/common/cli.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 | /         #[structopt(long, env)]
[INFO] [stdout] 26 | |         key: PathBuf,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/common/cli.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | /         #[structopt(long, env)]
[INFO] [stdout] 28 | |         server_hostname: String,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/common/cli.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | /         #[structopt(default_value = "", long, env)]
[INFO] [stdout] 18 | |         client_suffix: 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<PathBuf, Infallible>
[INFO] [stdout]   --> src/common/cli.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | /         #[structopt(long, env)]
[INFO] [stdout] 22 | |         ca_cert: PathBuf,
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/common/cli.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | /         #[structopt(long, env)]
[INFO] [stdout] 24 | |         cert: PathBuf,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/common/cli.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 | /         #[structopt(long, env)]
[INFO] [stdout] 26 | |         key: PathBuf,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/common/cli.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | /         #[structopt(long, env)]
[INFO] [stdout] 28 | |         server_hostname: String,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tunneler` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "81b75ba25c3d63aa776d19c0251aebe438f0973617dfe21d54d730ab98b607d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81b75ba25c3d63aa776d19c0251aebe438f0973617dfe21d54d730ab98b607d5", kill_on_drop: false }`
[INFO] [stdout] 81b75ba25c3d63aa776d19c0251aebe438f0973617dfe21d54d730ab98b607d5