[INFO] fetching crate rtt-target 0.4.0...
[INFO] testing rtt-target-0.4.0 against 1.76.0 for beta-1.77-1
[INFO] extracting crate rtt-target 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate rtt-target 0.4.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rtt-target 0.4.0
[INFO] finished tweaking crates.io crate rtt-target 0.4.0
[INFO] tweaked toml for crates.io crate rtt-target 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ufmt-write v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5f748b5a948c7a8206b22eceb011708b5681e461bbb86e11698e01a5d1b8b48
[INFO] running `Command { std: "docker" "start" "-a" "a5f748b5a948c7a8206b22eceb011708b5681e461bbb86e11698e01a5d1b8b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5f748b5a948c7a8206b22eceb011708b5681e461bbb86e11698e01a5d1b8b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5f748b5a948c7a8206b22eceb011708b5681e461bbb86e11698e01a5d1b8b48", kill_on_drop: false }`
[INFO] [stdout] a5f748b5a948c7a8206b22eceb011708b5681e461bbb86e11698e01a5d1b8b48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c290d5fc8b078bbaf28fdc2c83061d179ddfcb73c78c085ea23b3128e6065c97
[INFO] running `Command { std: "docker" "start" "-a" "c290d5fc8b078bbaf28fdc2c83061d179ddfcb73c78c085ea23b3128e6065c97", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling critical-section v1.1.2
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling rtt-target v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "c290d5fc8b078bbaf28fdc2c83061d179ddfcb73c78c085ea23b3128e6065c97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c290d5fc8b078bbaf28fdc2c83061d179ddfcb73c78c085ea23b3128e6065c97", kill_on_drop: false }`
[INFO] [stdout] c290d5fc8b078bbaf28fdc2c83061d179ddfcb73c78c085ea23b3128e6065c97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50dcc4d287ed14b2ed50c7cb7b40fbbb6225f23a41a8b795104be85715ab58ce
[INFO] running `Command { std: "docker" "start" "-a" "50dcc4d287ed14b2ed50c7cb7b40fbbb6225f23a41a8b795104be85715ab58ce", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling rtt-target v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "50dcc4d287ed14b2ed50c7cb7b40fbbb6225f23a41a8b795104be85715ab58ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50dcc4d287ed14b2ed50c7cb7b40fbbb6225f23a41a8b795104be85715ab58ce", kill_on_drop: false }`
[INFO] [stdout] 50dcc4d287ed14b2ed50c7cb7b40fbbb6225f23a41a8b795104be85715ab58ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9a93282d7ae39fb495d49fdee3790c0dd8af83ef8fb5c4ed148fe1580c626930
[INFO] running `Command { std: "docker" "start" "-a" "9a93282d7ae39fb495d49fdee3790c0dd8af83ef8fb5c4ed148fe1580c626930", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rtt_target-d1399e50bd68015f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rtt-target
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/init.rs - init::rtt_init (line 99) ... FAILED
[INFO] [stdout] test src/lib.rs - UpChannel::u (line 190) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 115) ... FAILED
[INFO] [stdout] test src/init.rs - init::rtt_init (line 66) ... FAILED
[INFO] [stdout] test src/init.rs - init::rtt_init (line 108) ... FAILED
[INFO] [stdout] test src/init.rs - init::rtt_init_default (line 170) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 94) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 72) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/init.rs - init::rtt_init (line 99) stdout ----
[INFO] [stdout] error[E0412]: cannot find type `UpChannel` in this scope
[INFO] [stdout]  --> src/init.rs:101:10
[INFO] [stdout]   |
[INFO] [stdout] 4 |     up: (UpChannel, UpChannel),
[INFO] [stdout]   |          ^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 + use rtt_target::UpChannel;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `UpChannel` in this scope
[INFO] [stdout]  --> src/init.rs:101:21
[INFO] [stdout]   |
[INFO] [stdout] 4 |     up: (UpChannel, UpChannel),
[INFO] [stdout]   |                     ^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 + use rtt_target::UpChannel;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `DownChannel` in this scope
[INFO] [stdout]  --> src/init.rs:102:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     down: (DownChannel,),
[INFO] [stdout]   |            ^^^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 + use rtt_target::DownChannel;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - UpChannel::u (line 190) stdout ----
[INFO] [stdout] error: cannot find macro `uwriteln` in this scope
[INFO] [stdout]  --> src/lib.rs:192:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | uwriteln!(output.u(), "Hello, ufmt!");
[INFO] [stdout]   | ^^^^^^^^ help: a macro with a similar name exists: `writeln`
[INFO] [stdout]  --> /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/macros/mod.rs:639:1
[INFO] [stdout]   |
[INFO] [stdout]   = note: similarly named macro `writeln` defined here
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `channels` in this scope
[INFO] [stdout]  --> src/lib.rs:191:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut output = channels.up.0;
[INFO] [stdout]   |                  ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 115) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `read` in this scope
[INFO] [stdout]  --> src/lib.rs:121:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |         read = channels.down.0.read(&mut read_buf);
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: you might have meant to introduce a new binding
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let read = channels.down.0.read(&mut read_buf);
[INFO] [stdout]   |         +++
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 4 + use core::ptr::read;
[INFO] [stdout]   |
[INFO] [stdout] 4 + use std::fs::read;
[INFO] [stdout]   |
[INFO] [stdout] 4 + use std::ptr::read;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `channels` in this scope
[INFO] [stdout]  --> src/lib.rs:121:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |         read = channels.down.0.read(&mut read_buf);
[INFO] [stdout]   |                ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `read_buf` in this scope
[INFO] [stdout]  --> src/lib.rs:121:42
[INFO] [stdout]   |
[INFO] [stdout] 8 |         read = channels.down.0.read(&mut read_buf);
[INFO] [stdout]   |                                          ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `read` in this scope
[INFO] [stdout]  --> src/lib.rs:122:21
[INFO] [stdout]   |
[INFO] [stdout] 9 |         for i in 0..read {
[INFO] [stdout]   |                     ^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 4 + use core::ptr::read;
[INFO] [stdout]   |
[INFO] [stdout] 4 + use std::fs::read;
[INFO] [stdout]   |
[INFO] [stdout] 4 + use std::ptr::read;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `read_buf` in this scope
[INFO] [stdout]   --> src/lib.rs:123:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |             match read_buf[i] as char {
[INFO] [stdout]    |                   ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0571]: `break` with value from a `for` loop
[INFO] [stdout]   --> src/lib.rs:124:24
[INFO] [stdout]    |
[INFO] [stdout] 9  |         for i in 0..read {
[INFO] [stdout]    |         ---------------- you can't `break` with a value in a `for` loop
[INFO] [stdout] 10 |             match read_buf[i] as char {
[INFO] [stdout] 11 |                 '0' => break 0,
[INFO] [stdout]    |                        ^^^^^^^ can only break with a value inside `loop` or breakable block
[INFO] [stdout]    |
[INFO] [stdout] help: use `break` on its own without a value inside this `for` loop
[INFO] [stdout]    |
[INFO] [stdout] 11 |                 '0' => break,
[INFO] [stdout]    |                        ~~~~~
[INFO] [stdout] 
[INFO] [stdout] error[E0571]: `break` with value from a `for` loop
[INFO] [stdout]   --> src/lib.rs:125:24
[INFO] [stdout]    |
[INFO] [stdout] 9  |         for i in 0..read {
[INFO] [stdout]    |         ---------------- you can't `break` with a value in a `for` loop
[INFO] [stdout] ...
[INFO] [stdout] 12 |                 '1' => break 1,
[INFO] [stdout]    |                        ^^^^^^^ can only break with a value inside `loop` or breakable block
[INFO] [stdout]    |
[INFO] [stdout] help: use `break` on its own without a value inside this `for` loop
[INFO] [stdout]    |
[INFO] [stdout] 12 |                 '1' => break,
[INFO] [stdout]    |                        ~~~~~
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0571.
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/init.rs - init::rtt_init (line 66) stdout ----
[INFO] [stdout] error: cannot find macro `rtt_init` in this scope
[INFO] [stdout]  --> src/init.rs:67:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | let channels = rtt_init! {
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 2 + use rtt_target::rtt_init;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/init.rs - init::rtt_init (line 108) stdout ----
[INFO] [stdout] error: cannot find macro `rtt_init` in this scope
[INFO] [stdout]  --> src/init.rs:111:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | let channels = rtt_init! { ... };
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 2 + use rtt_target::rtt_init;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/init.rs - init::rtt_init_default (line 170) stdout ----
[INFO] [stdout] error: cannot find macro `rtt_init` in this scope
[INFO] [stdout]  --> src/init.rs:171:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | rtt_init! {
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 2 + use rtt_target::rtt_init;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 94) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `rtt_target::debug_rtt_init_print`
[INFO] [stdout]  --> src/lib.rs:96:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rtt_target::{debug_rtt_init_print, debug_rprintln};
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |                  |
[INFO] [stdout]   |                  no `debug_rtt_init_print` in the root
[INFO] [stdout]   |                  help: a similar name exists in the module: `debug_rtt_init`
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `debug_rtt_init_print`
[INFO] [stdout]  --> src/lib.rs:99:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     debug_rtt_init_print!(); // nop in --release
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 72) stdout ----
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: LC_ALL="C" PATH="/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/cargo-home/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" VSLANG="1033" "cc" "-m64" "/tmp/rustcFWIiON/symbols.o" "/tmp/rustdoctest7haVeL/rust_out.rust_out.59cd1df5011099d7-cgu.0.rcgu.o" "/tmp/rustdoctest7haVeL/rust_out.tm2w28y2z462vkh.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/librtt_target-a30d6205a43146cd.rlib" "/opt/rustwide/target/debug/deps/libcritical_section-e9884b9a2be695e6.rlib" "/opt/rustwide/target/debug/deps/libufmt_write-7561cb7339d1e9ee.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-66d8041607d2929b.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-a57e2388c0aea9b1.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-dcd9be90ae2cb505.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-516789932d161b4e.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-1ff34b0cf871cb60.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-0c110dd0650d6cb7.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-a6e97aae2681ad8f.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-b93dac2525ec4d1e.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-ce1d65fb391ae98b.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-8933a2fb54d88492.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-306712ebb1ee1a3f.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-349c574f342b0d30.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-65c422a3ad95273d.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-7e6330a6c0cb9441.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-39c59240bfdfab27.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-e9d126c51bb8b2bb.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-5af394d9b1f07bdc.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-693a8f23970c5917.rlib" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-13fc9d1ed9c7a2bc.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/tmp/rustdoctest7haVeL/rust_out" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/librtt_target-a30d6205a43146cd.rlib(rtt_target-a30d6205a43146cd.rtt_target.b0625da9bd220665-cgu.0.rcgu.o): in function `critical_section::acquire':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/critical-section-1.1.2/src/lib.rs:183: undefined reference to `_critical_section_1_0_acquire'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/critical-section-1.1.2/src/lib.rs:183: undefined reference to `_critical_section_1_0_acquire'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/librtt_target-a30d6205a43146cd.rlib(rtt_target-a30d6205a43146cd.rtt_target.b0625da9bd220665-cgu.0.rcgu.o): in function `critical_section::release':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/critical-section-1.1.2/src/lib.rs:200: undefined reference to `_critical_section_1_0_release'
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout]   = note: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified
[INFO] [stdout]   = note: use the `-l` flag to specify native libraries to link
[INFO] [stdout]   = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname)
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/init.rs - init::rtt_init (line 108)
[INFO] [stdout]     src/init.rs - init::rtt_init (line 66)
[INFO] [stdout]     src/init.rs - init::rtt_init (line 99)
[INFO] [stdout]     src/init.rs - init::rtt_init_default (line 170)
[INFO] [stdout]     src/lib.rs - (line 115)
[INFO] [stdout]     src/lib.rs - (line 72)
[INFO] [stdout]     src/lib.rs - (line 94)
[INFO] [stdout]     src/lib.rs - UpChannel::u (line 190)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 8 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.23s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "9a93282d7ae39fb495d49fdee3790c0dd8af83ef8fb5c4ed148fe1580c626930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a93282d7ae39fb495d49fdee3790c0dd8af83ef8fb5c4ed148fe1580c626930", kill_on_drop: false }`
[INFO] [stdout] 9a93282d7ae39fb495d49fdee3790c0dd8af83ef8fb5c4ed148fe1580c626930
