[INFO] fetching crate runnel 0.4.3...
[INFO] checking runnel-0.4.3 against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] extracting crate runnel 0.4.3 into /workspace/builds/worker-6-tc2/source
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate runnel 0.4.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate runnel 0.4.3
[INFO] tweaked toml for crates.io crate runnel 0.4.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate runnel 0.4.3 on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate runnel 0.4.3 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ac9f88a3f8b47d6fa01508907246a92c47a13029a3fea0160eec45a33f8c5cb
[INFO] running `Command { std: "docker" "start" "-a" "5ac9f88a3f8b47d6fa01508907246a92c47a13029a3fea0160eec45a33f8c5cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ac9f88a3f8b47d6fa01508907246a92c47a13029a3fea0160eec45a33f8c5cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ac9f88a3f8b47d6fa01508907246a92c47a13029a3fea0160eec45a33f8c5cb", kill_on_drop: false }`
[INFO] [stdout] 5ac9f88a3f8b47d6fa01508907246a92c47a13029a3fea0160eec45a33f8c5cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b46970f322c46e28540908f58fda699e2d2f93db512d1e5528379b2b419f7c67
[INFO] running `Command { std: "docker" "start" "-a" "b46970f322c46e28540908f58fda699e2d2f93db512d1e5528379b2b419f7c67", kill_on_drop: false }`
[INFO] [stderr]     Checking runnel v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `LinePipeInLock` is never constructed
[INFO] [stdout]   --> src/medium/linepipeio.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub struct LinePipeInLock<'a>(LockableLinePipeInLock<'a>);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `LinePipeOutLock` is never constructed
[INFO] [stdout]    --> src/medium/linepipeio.rs:117:12
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub struct LinePipeOutLock<'a>(LockableLinePipeOutLock<'a>);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `LinePipeErrLock` is never constructed
[INFO] [stdout]    --> src/medium/linepipeio.rs:187:12
[INFO] [stdout]     |
[INFO] [stdout] 187 | pub struct LinePipeErrLock<'a>(LockableLinePipeOutLock<'a>);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `LinePipeErrLock` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `runnel` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `LinePipeInLock` is never constructed
[INFO] [stdout]   --> src/medium/linepipeio.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub struct LinePipeInLock<'a>(LockableLinePipeInLock<'a>);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `LinePipeOutLock` is never constructed
[INFO] [stdout]    --> src/medium/linepipeio.rs:117:12
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub struct LinePipeOutLock<'a>(LockableLinePipeOutLock<'a>);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `runnel` (lib test) due to 3 previous errors
[INFO] [stdout] error: struct `LinePipeErrLock` is never constructed
[INFO] [stdout]    --> src/medium/linepipeio.rs:187:12
[INFO] [stdout]     |
[INFO] [stdout] 187 | pub struct LinePipeErrLock<'a>(LockableLinePipeOutLock<'a>);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `LinePipeErrLock` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b46970f322c46e28540908f58fda699e2d2f93db512d1e5528379b2b419f7c67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b46970f322c46e28540908f58fda699e2d2f93db512d1e5528379b2b419f7c67", kill_on_drop: false }`
[INFO] [stdout] b46970f322c46e28540908f58fda699e2d2f93db512d1e5528379b2b419f7c67
