[INFO] cloning repository https://github.com/urbit/io_drivers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/urbit/io_drivers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furbit%2Fio_drivers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furbit%2Fio_drivers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0ac358c8eeaa9872102df370585f87117d6ddf0
[INFO] checking urbit/io_drivers against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furbit%2Fio_drivers" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/urbit/io_drivers
[INFO] finished tweaking git repo https://github.com/urbit/io_drivers
[INFO] tweaked toml for git repo https://github.com/urbit/io_drivers written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/urbit/io_drivers 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 git repo https://github.com/urbit/io_drivers 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] adc382272d49a02f1e139acb344c35dc8088226877d0c430cbcb5f83cebe00ee
[INFO] running `Command { std: "docker" "start" "-a" "adc382272d49a02f1e139acb344c35dc8088226877d0c430cbcb5f83cebe00ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adc382272d49a02f1e139acb344c35dc8088226877d0c430cbcb5f83cebe00ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adc382272d49a02f1e139acb344c35dc8088226877d0c430cbcb5f83cebe00ee", kill_on_drop: false }`
[INFO] [stdout] adc382272d49a02f1e139acb344c35dc8088226877d0c430cbcb5f83cebe00ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 798dd2a5bb9bb64037881d90f7bf3f3d04bc1a671566297d315c31c3d6c55242
[INFO] running `Command { std: "docker" "start" "-a" "798dd2a5bb9bb64037881d90f7bf3f3d04bc1a671566297d315c31c3d6c55242", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling rustls v0.20.6
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking tracing-core v0.1.29
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling tokio v1.21.1
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]    Compiling time-macros v0.2.5
[INFO] [stderr]     Checking rustls-pemfile v1.0.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking tracing v0.1.36
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking noun v0.1.0 (https://github.com/urbit/noun.git?branch=master#64c271f5)
[INFO] [stderr]     Checking rustls-native-certs v0.6.2
[INFO] [stderr]     Checking time v0.3.16
[INFO] [stderr]     Checking simplelog v0.12.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking hyper v0.14.20
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking hyper-rustls v0.23.0
[INFO] [stderr]     Checking io_drivers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:305:14
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Some(convert!(changes.into_iter() => Noun).unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:305:14
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Some(convert!(changes.into_iter() => Noun).unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:305:14
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Some(convert!(changes.into_iter() => Noun).unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:305:14
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Some(convert!(changes.into_iter() => Noun).unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:305:14
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Some(convert!(changes.into_iter() => Noun).unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 |         convert!(knots.0.into_iter() => Noun).unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 |         convert!(knots.0.into_iter() => Noun).unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 |         convert!(knots.0.into_iter() => Noun).unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 |         convert!(knots.0.into_iter() => Noun).unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 |         convert!(knots.0.into_iter() => Noun).unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `io_drivers` (lib) due to 10 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<noun::Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:305:14
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Some(convert!(changes.into_iter() => Noun).unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<noun::Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:305:14
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Some(convert!(changes.into_iter() => Noun).unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<noun::Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:305:14
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Some(convert!(changes.into_iter() => Noun).unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<noun::Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:305:14
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Some(convert!(changes.into_iter() => Noun).unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<noun::Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:305:14
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Some(convert!(changes.into_iter() => Noun).unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<noun::Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 |         convert!(knots.0.into_iter() => Noun).unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<noun::Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 |         convert!(knots.0.into_iter() => Noun).unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<noun::Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 |         convert!(knots.0.into_iter() => Noun).unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<noun::Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 |         convert!(knots.0.into_iter() => Noun).unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (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<noun::Noun, Infallible>
[INFO] [stdout]    --> src/fs.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 |         convert!(knots.0.into_iter() => Noun).unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `convert` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `io_drivers` (lib test) due to 10 previous errors
[INFO] running `Command { std: "docker" "inspect" "798dd2a5bb9bb64037881d90f7bf3f3d04bc1a671566297d315c31c3d6c55242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "798dd2a5bb9bb64037881d90f7bf3f3d04bc1a671566297d315c31c3d6c55242", kill_on_drop: false }`
[INFO] [stdout] 798dd2a5bb9bb64037881d90f7bf3f3d04bc1a671566297d315c31c3d6c55242
