[INFO] fetching crate ecoji 1.0.0... [INFO] testing ecoji-1.0.0 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530 [INFO] extracting crate ecoji 1.0.0 into /workspace/builds/worker-11/source [INFO] validating manifest of crates.io crate ecoji 1.0.0 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate ecoji 1.0.0 [INFO] finished tweaking crates.io crate ecoji 1.0.0 [INFO] tweaked toml for crates.io crate ecoji 1.0.0 written to /workspace/builds/worker-11/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded phf_codegen v0.7.24 [INFO] [stderr] Downloaded phf_generator v0.7.24 [INFO] [stderr] Downloaded phf v0.7.24 [INFO] [stderr] Downloaded siphasher v0.2.3 [INFO] [stderr] Downloaded phf_shared v0.7.24 [INFO] [stderr] Downloaded env_logger v0.5.13 [INFO] [stderr] Downloaded quickcheck v0.6.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4022e89a3d5c9267af14673ae04fadf71fe111d1e4ca856f7082816c51978117 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "4022e89a3d5c9267af14673ae04fadf71fe111d1e4ca856f7082816c51978117", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4022e89a3d5c9267af14673ae04fadf71fe111d1e4ca856f7082816c51978117", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4022e89a3d5c9267af14673ae04fadf71fe111d1e4ca856f7082816c51978117", kill_on_drop: false }` [INFO] [stdout] 4022e89a3d5c9267af14673ae04fadf71fe111d1e4ca856f7082816c51978117 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 42d17e22c8236f4157ffc895f0072e736913210aef0e88ecc17dfc37d0b1b70a [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "42d17e22c8236f4157ffc895f0072e736913210aef0e88ecc17dfc37d0b1b70a", kill_on_drop: false }` [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Compiling phf_codegen v0.7.24 [INFO] [stderr] Compiling ecoji v1.0.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> build.rs:21:28 [INFO] [stdout] | [INFO] [stdout] 21 | fn run() -> Result<(), Box> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/chars.rs:69:32 [INFO] [stdout] | [INFO] [stdout] 69 | fn cause(&self) -> Option<&std_error::Error> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std_error::Error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/chars.rs:86:31 [INFO] [stdout] | [INFO] [stdout] 86 | fn read_one_byte(reader: &mut Read) -> Option> { [INFO] [stdout] | ^^^^ help: use `dyn`: `dyn Read` [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/chars.rs:66:41 [INFO] [stdout] | [INFO] [stdout] 66 | CharsError::Other(ref e) => std_error::Error::description(e), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting [INFO] [stdout] --> src/chars.rs:72:43 [INFO] [stdout] | [INFO] [stdout] 72 | CharsError::Other(ref e) => e.cause(), [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.78s [INFO] running `Command { std: "docker" "inspect" "42d17e22c8236f4157ffc895f0072e736913210aef0e88ecc17dfc37d0b1b70a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "42d17e22c8236f4157ffc895f0072e736913210aef0e88ecc17dfc37d0b1b70a", kill_on_drop: false }` [INFO] [stdout] 42d17e22c8236f4157ffc895f0072e736913210aef0e88ecc17dfc37d0b1b70a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] fbb958c50ee5c960492aa5bb87740962f41314df38080642d404356ec8963ae5 [INFO] running `Command { std: "docker" "start" "-a" "fbb958c50ee5c960492aa5bb87740962f41314df38080642d404356ec8963ae5", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling quick-error v1.2.3 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> build.rs:21:28 [INFO] [stdout] | [INFO] [stdout] 21 | fn run() -> Result<(), Box> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/chars.rs:69:32 [INFO] [stdout] | [INFO] [stdout] 69 | fn cause(&self) -> Option<&std_error::Error> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std_error::Error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/chars.rs:86:31 [INFO] [stdout] | [INFO] [stdout] 86 | fn read_one_byte(reader: &mut Read) -> Option> { [INFO] [stdout] | ^^^^ help: use `dyn`: `dyn Read` [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/chars.rs:66:41 [INFO] [stdout] | [INFO] [stdout] 66 | CharsError::Other(ref e) => std_error::Error::description(e), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting [INFO] [stdout] --> src/chars.rs:72:43 [INFO] [stdout] | [INFO] [stdout] 72 | CharsError::Other(ref e) => e.cause(), [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling humantime v1.3.0 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling env_logger v0.5.13 [INFO] [stderr] Compiling quickcheck v0.6.2 [INFO] [stderr] Compiling ecoji v1.0.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/chars.rs:69:32 [INFO] [stdout] | [INFO] [stdout] 69 | fn cause(&self) -> Option<&std_error::Error> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std_error::Error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/chars.rs:86:31 [INFO] [stdout] | [INFO] [stdout] 86 | fn read_one_byte(reader: &mut Read) -> Option> { [INFO] [stdout] | ^^^^ help: use `dyn`: `dyn Read` [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/chars.rs:66:41 [INFO] [stdout] | [INFO] [stdout] 66 | CharsError::Other(ref e) => std_error::Error::description(e), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting [INFO] [stdout] --> src/chars.rs:72:43 [INFO] [stdout] | [INFO] [stdout] 72 | CharsError::Other(ref e) => e.cause(), [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 13.40s [INFO] running `Command { std: "docker" "inspect" "fbb958c50ee5c960492aa5bb87740962f41314df38080642d404356ec8963ae5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fbb958c50ee5c960492aa5bb87740962f41314df38080642d404356ec8963ae5", kill_on_drop: false }` [INFO] [stdout] fbb958c50ee5c960492aa5bb87740962f41314df38080642d404356ec8963ae5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] fc22e950fa3cf211b193b270ea4d3926186a974ea584f31fdb9e5b7fa5a53c18 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "fc22e950fa3cf211b193b270ea4d3926186a974ea584f31fdb9e5b7fa5a53c18", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] running 15 tests [INFO] [stderr] --> build.rs:21:28 [INFO] [stderr] | [INFO] [stderr] 21 | fn run() -> Result<(), Box> { [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stderr] = note: for more information, see issue #80165 [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/chars.rs:69:32 [INFO] [stderr] | [INFO] [stderr] 69 | fn cause(&self) -> Option<&std_error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std_error::Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stderr] = note: for more information, see issue #80165 [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/chars.rs:86:31 [INFO] [stderr] | [INFO] [stderr] 86 | fn read_one_byte(reader: &mut Read) -> Option> { [INFO] [stderr] | ^^^^ help: use `dyn`: `dyn Read` [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stderr] = note: for more information, see issue #80165 [INFO] [stderr] [INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stderr] --> src/chars.rs:66:41 [INFO] [stderr] | [INFO] [stderr] 66 | CharsError::Other(ref e) => std_error::Error::description(e), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting [INFO] [stderr] --> src/chars.rs:72:43 [INFO] [stderr] | [INFO] [stderr] 72 | CharsError::Other(ref e) => e.cause(), [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/chars.rs:69:32 [INFO] [stderr] | [INFO] [stderr] 69 | fn cause(&self) -> Option<&std_error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std_error::Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stderr] = note: for more information, see issue #80165 [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/chars.rs:86:31 [INFO] [stderr] | [INFO] [stderr] 86 | fn read_one_byte(reader: &mut Read) -> Option> { [INFO] [stderr] | ^^^^ help: use `dyn`: `dyn Read` [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stderr] = note: for more information, see issue #80165 [INFO] [stderr] [INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stderr] --> src/chars.rs:66:41 [INFO] [stderr] | [INFO] [stderr] 66 | CharsError::Other(ref e) => std_error::Error::description(e), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting [INFO] [stderr] --> src/chars.rs:72:43 [INFO] [stderr] | [INFO] [stderr] 72 | CharsError::Other(ref e) => e.cause(), [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/ecoji-587f5280573faf20) [INFO] [stdout] test decode::tests::test_five_bytes ... ok [INFO] [stdout] test decode::tests::test_four_bytes ... ok [INFO] [stdout] test decode::tests::test_two_bytes ... ok [INFO] [stdout] test decode::tests::test_three_bytes ... ok [INFO] [stdout] test decode::tests::test_one_byte ... ok [INFO] [stdout] test decode::tests::test_random ... ok [INFO] [stdout] test encode::tests::test_four_bytes ... ok [INFO] [stdout] test encode::tests::test_one_byte ... ok [INFO] [stdout] test encode::tests::test_random ... ok [INFO] [stdout] test encode::tests::test_three_bytes ... ok [INFO] [stdout] test encode::tests::test_two_bytes ... ok [INFO] [stdout] test encode::tests::test_five_bytes ... ok [INFO] [stdout] test emojis::test_mapping ... ok [INFO] [stdout] test test::encode_then_decode_identity ... ok [INFO] [stdout] test test::encoded_data_has_the_same_sort_order ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.88s [INFO] [stdout] [INFO] [stderr] Doc-tests ecoji [INFO] [stdout] [INFO] [stdout] running 12 tests [INFO] [stdout] test src/decode.rs - decode::decode_to_string (line 191) ... ok [INFO] [stdout] test src/lib.rs - (line 93) ... ok [INFO] [stdout] test src/encode.rs - encode::encode (line 92) ... ok [INFO] [stdout] test src/decode.rs - decode::decode (line 36) ... ok [INFO] [stdout] test src/decode.rs - decode::decode_to_vec (line 148) ... ok [INFO] [stdout] test src/decode.rs - decode::decode (line 64) ... ok [INFO] [stdout] test src/decode.rs - decode::decode (line 50) ... ok [INFO] [stdout] test src/decode.rs - decode::decode_to_string (line 178) ... ok [INFO] [stdout] test src/encode.rs - encode::encode_to_string (line 135) ... ok [INFO] [stdout] test src/decode.rs - decode::decode (line 21) ... ok [INFO] [stdout] test src/lib.rs - (line 22) ... ok [INFO] [stdout] test src/lib.rs - (line 45) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.77s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "fc22e950fa3cf211b193b270ea4d3926186a974ea584f31fdb9e5b7fa5a53c18", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fc22e950fa3cf211b193b270ea4d3926186a974ea584f31fdb9e5b7fa5a53c18", kill_on_drop: false }` [INFO] [stdout] fc22e950fa3cf211b193b270ea4d3926186a974ea584f31fdb9e5b7fa5a53c18