[INFO] fetching crate os-sync 0.3.3...
[INFO] testing os-sync-0.3.3 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate os-sync 0.3.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate os-sync 0.3.3 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate os-sync 0.3.3
[INFO] finished tweaking crates.io crate os-sync 0.3.3
[INFO] tweaked toml for crates.io crate os-sync 0.3.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded str-buf v1.0.5
[INFO] [stderr]   Downloaded error-code v2.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e175979e8c5977421d2121faff09d37687e1d1bf8f19bb6dfc882ce1afec35f0
[INFO] running `Command { std: "docker" "start" "-a" "e175979e8c5977421d2121faff09d37687e1d1bf8f19bb6dfc882ce1afec35f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e175979e8c5977421d2121faff09d37687e1d1bf8f19bb6dfc882ce1afec35f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e175979e8c5977421d2121faff09d37687e1d1bf8f19bb6dfc882ce1afec35f0", kill_on_drop: false }`
[INFO] [stdout] e175979e8c5977421d2121faff09d37687e1d1bf8f19bb6dfc882ce1afec35f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4dd935fc5ac0291cfd4b1b8be44f4ef460fdd979522f118c6db50d46c830738f
[INFO] running `Command { std: "docker" "start" "-a" "4dd935fc5ac0291cfd4b1b8be44f4ef460fdd979522f118c6db50d46c830738f", kill_on_drop: false }`
[INFO] [stderr]    Compiling str-buf v1.0.5
[INFO] [stderr]    Compiling error-code v2.3.0
[INFO] [stderr]    Compiling os-sync v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::convert::TryFrom`
[INFO] [stdout]  --> src/sem/posix.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/once.rs:125:45
[INFO] [stdout]     |
[INFO] [stdout] 125 |                         core::sync::atomic::spin_loop_hint();
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicU8::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/once.rs:92:49
[INFO] [stdout]    |
[INFO] [stdout] 92 |                     if INCOMPLETE != self.state.compare_and_swap(INCOMPLETE, RUNNING, Ordering::Acquire) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicU32::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/mutex/sem.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 |         if self.count.compare_and_swap(0, 1, Ordering::AcqRel) > 0 {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/once.rs:82:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |         panic!(FAIL_MSG)
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 82 |         panic!("{}", FAIL_MSG)
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/once.rs:90:32
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 FAIL => panic!(FAIL_MSG),
[INFO] [stdout]    |                                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 FAIL => panic!("{}", FAIL_MSG),
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/once.rs:121:36
[INFO] [stdout]     |
[INFO] [stdout] 121 | ...                   panic!(FAIL_MSG);
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 121 |                             panic!("{}", FAIL_MSG);
[INFO] [stdout]     |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "4dd935fc5ac0291cfd4b1b8be44f4ef460fdd979522f118c6db50d46c830738f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dd935fc5ac0291cfd4b1b8be44f4ef460fdd979522f118c6db50d46c830738f", kill_on_drop: false }`
[INFO] [stdout] 4dd935fc5ac0291cfd4b1b8be44f4ef460fdd979522f118c6db50d46c830738f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f387cfc5a786f0d7a17effd5be629ccf62d28fc73fdb89ba0f4c27a1e5b14a2
[INFO] running `Command { std: "docker" "start" "-a" "0f387cfc5a786f0d7a17effd5be629ccf62d28fc73fdb89ba0f4c27a1e5b14a2", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `core::convert::TryFrom`
[INFO] [stdout]  --> src/sem/posix.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/once.rs:125:45
[INFO] [stdout]     |
[INFO] [stdout] 125 |                         core::sync::atomic::spin_loop_hint();
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicU8::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/once.rs:92:49
[INFO] [stdout]    |
[INFO] [stdout] 92 |                     if INCOMPLETE != self.state.compare_and_swap(INCOMPLETE, RUNNING, Ordering::Acquire) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicU32::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/mutex/sem.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 |         if self.count.compare_and_swap(0, 1, Ordering::AcqRel) > 0 {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/once.rs:82:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |         panic!(FAIL_MSG)
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 82 |         panic!("{}", FAIL_MSG)
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/once.rs:90:32
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 FAIL => panic!(FAIL_MSG),
[INFO] [stdout]    |                                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 FAIL => panic!("{}", FAIL_MSG),
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/once.rs:121:36
[INFO] [stdout]     |
[INFO] [stdout] 121 | ...                   panic!(FAIL_MSG);
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 121 |                             panic!("{}", FAIL_MSG);
[INFO] [stdout]     |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling os-sync v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::convert::TryFrom`
[INFO] [stdout]  --> src/sem/posix.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/once.rs:125:45
[INFO] [stdout]     |
[INFO] [stdout] 125 |                         core::sync::atomic::spin_loop_hint();
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicU8::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/once.rs:92:49
[INFO] [stdout]    |
[INFO] [stdout] 92 |                     if INCOMPLETE != self.state.compare_and_swap(INCOMPLETE, RUNNING, Ordering::Acquire) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::sync::atomic::AtomicU32::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/mutex/sem.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 |         if self.count.compare_and_swap(0, 1, Ordering::AcqRel) > 0 {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/once.rs:82:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |         panic!(FAIL_MSG)
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 82 |         panic!("{}", FAIL_MSG)
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/once.rs:90:32
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 FAIL => panic!(FAIL_MSG),
[INFO] [stdout]    |                                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 FAIL => panic!("{}", FAIL_MSG),
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/once.rs:121:36
[INFO] [stdout]     |
[INFO] [stdout] 121 | ...                   panic!(FAIL_MSG);
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 121 |                             panic!("{}", FAIL_MSG);
[INFO] [stdout]     |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "0f387cfc5a786f0d7a17effd5be629ccf62d28fc73fdb89ba0f4c27a1e5b14a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f387cfc5a786f0d7a17effd5be629ccf62d28fc73fdb89ba0f4c27a1e5b14a2", kill_on_drop: false }`
[INFO] [stdout] 0f387cfc5a786f0d7a17effd5be629ccf62d28fc73fdb89ba0f4c27a1e5b14a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7030e9faf543bad9d08906004f6a9677072d15993d49df9cc5e53033a548017f
[INFO] running `Command { std: "docker" "start" "-a" "7030e9faf543bad9d08906004f6a9677072d15993d49df9cc5e53033a548017f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `core::convert::TryFrom`
[INFO] [stderr]  --> src/sem/posix.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use core::convert::TryFrom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `core::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stderr]    --> src/once.rs:125:45
[INFO] [stderr]     |
[INFO] [stderr] 125 |                         core::sync::atomic::spin_loop_hint();
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::sync::atomic::AtomicU8::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]   --> src/once.rs:92:49
[INFO] [stderr]    |
[INFO] [stderr] 92 |                     if INCOMPLETE != self.state.compare_and_swap(INCOMPLETE, RUNNING, Ordering::Acquire) {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::sync::atomic::AtomicU32::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]   --> src/mutex/sem.rs:34:23
[INFO] [stderr]    |
[INFO] [stderr] 34 |         if self.count.compare_and_swap(0, 1, Ordering::AcqRel) > 0 {
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/once.rs:82:16
[INFO] [stderr]    |
[INFO] [stderr] 82 |         panic!(FAIL_MSG)
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 82 |         panic!("{}", FAIL_MSG)
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/once.rs:90:32
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 FAIL => panic!(FAIL_MSG),
[INFO] [stderr]    |                                ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 FAIL => panic!("{}", FAIL_MSG),
[INFO] [stderr]    |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/once.rs:121:36
[INFO] [stderr]     |
[INFO] [stderr] 121 | ...                   panic!(FAIL_MSG);
[INFO] [stderr]     |                              ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 121 |                             panic!("{}", FAIL_MSG);
[INFO] [stderr]     |                                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `os-sync` (lib) generated 7 warnings
[INFO] [stderr] warning: `os-sync` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/os_sync-10547415a5b87cc1)
[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]      Running tests/mutex.rs (/opt/rustwide/target/debug/deps/mutex-2621d9ee39e699a1)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test should_lock_sem_mutex_without_contest ... ok
[INFO] [stdout] test should_lock_sem_mutex_with_contest ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/once.rs (/opt/rustwide/target/debug/deps/once-42aec784c9e5684f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test should_call_once1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/sem.rs (/opt/rustwide/target/debug/deps/sem-c062ea9510c7b76e)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test should_return_when_signaled ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests os-sync
[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] running `Command { std: "docker" "inspect" "7030e9faf543bad9d08906004f6a9677072d15993d49df9cc5e53033a548017f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7030e9faf543bad9d08906004f6a9677072d15993d49df9cc5e53033a548017f", kill_on_drop: false }`
[INFO] [stdout] 7030e9faf543bad9d08906004f6a9677072d15993d49df9cc5e53033a548017f
