[INFO] cloning repository https://github.com/tobymurray/reddit-app-auth [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tobymurray/reddit-app-auth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftobymurray%2Freddit-app-auth", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftobymurray%2Freddit-app-auth'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cb4bef982898ec041957bfaaa1bdd7c1ee3efb87 [INFO] checking tobymurray/reddit-app-auth against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftobymurray%2Freddit-app-auth" "/workspace/builds/worker-13/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tobymurray/reddit-app-auth on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/tobymurray/reddit-app-auth [INFO] finished tweaking git repo https://github.com/tobymurray/reddit-app-auth [INFO] tweaked toml for git repo https://github.com/tobymurray/reddit-app-auth written to /workspace/builds/worker-13/source/Cargo.toml [INFO] crate git repo https://github.com/tobymurray/reddit-app-auth already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7443a3eb536d9c5cc1904e8e57f6f519013409b63dc08f86f30122194ec878ff [INFO] running `Command { std: "docker" "start" "-a" "7443a3eb536d9c5cc1904e8e57f6f519013409b63dc08f86f30122194ec878ff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7443a3eb536d9c5cc1904e8e57f6f519013409b63dc08f86f30122194ec878ff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7443a3eb536d9c5cc1904e8e57f6f519013409b63dc08f86f30122194ec878ff", kill_on_drop: false }` [INFO] [stdout] 7443a3eb536d9c5cc1904e8e57f6f519013409b63dc08f86f30122194ec878ff [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3e85cf2f6f8082cf56f97aa8957831cbaf101ef7f7c107109390f348fa7ef2a0 [INFO] running `Command { std: "docker" "start" "-a" "3e85cf2f6f8082cf56f97aa8957831cbaf101ef7f7c107109390f348fa7ef2a0", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] Running `cargo fix --edition` [INFO] [stderr] Compiling libc v0.2.72 [INFO] [stderr] Compiling proc-macro2 v1.0.18 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.34 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling version_check v0.9.2 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling cc v1.0.58 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling pkg-config v0.3.18 [INFO] [stderr] Checking fnv v1.0.7 [INFO] [stderr] Checking bytes v0.5.6 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking futures-core v0.3.5 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Compiling pin-project-internal v0.4.22 [INFO] [stderr] Checking pin-project-lite v0.1.7 [INFO] [stderr] Checking foreign-types-shared v0.1.1 [INFO] [stderr] Checking once_cell v1.4.0 [INFO] [stderr] Compiling openssl v0.10.30 [INFO] [stderr] Compiling serde_derive v1.0.114 [INFO] [stderr] Checking tinyvec v0.3.3 [INFO] [stderr] Compiling serde v1.0.114 [INFO] [stderr] Checking futures-sink v0.3.5 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Checking futures-io v0.3.5 [INFO] [stderr] Compiling native-tls v0.2.4 [INFO] [stderr] Checking openssl-probe v0.1.2 [INFO] [stderr] Checking try-lock v0.2.3 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.56 [INFO] [stderr] Checking percent-encoding v2.1.0 [INFO] [stderr] Compiling encoding_rs v0.8.23 [INFO] [stderr] Checking tower-service v0.3.0 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Checking mime v0.3.16 [INFO] [stderr] Checking dtoa v0.4.6 [INFO] [stderr] Checking base64 v0.12.3 [INFO] [stderr] Checking foreign-types v0.3.2 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Checking futures-task v0.3.5 [INFO] [stderr] Checking futures-channel v0.3.5 [INFO] [stderr] Checking tracing-core v0.1.11 [INFO] [stderr] Checking unicode-normalization v0.1.13 [INFO] [stderr] Checking http v0.2.1 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.3 [INFO] [stderr] Compiling proc-macro-error v1.0.3 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking want v0.3.0 [INFO] [stderr] Checking idna v0.2.0 [INFO] [stderr] Compiling hashbrown v0.8.1 [INFO] [stderr] Compiling indexmap v1.5.0 [INFO] [stderr] Checking tracing v0.1.16 [INFO] [stderr] Compiling openssl-sys v0.9.58 [INFO] [stderr] Compiling mime_guess v2.0.3 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking net2 v0.2.34 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking time v0.1.43 [INFO] [stderr] Checking socket2 v0.3.12 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.33.1 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking url v2.1.1 [INFO] [stderr] Checking tokio v0.2.21 [INFO] [stderr] Checking http-body v0.3.1 [INFO] [stderr] Checking tokio-util v0.3.1 [INFO] [stderr] Checking tokio-tls v0.3.1 [INFO] [stderr] Compiling syn-mid v0.5.0 [INFO] [stderr] Compiling structopt-derive v0.4.8 [INFO] [stderr] Checking pin-project v0.4.22 [INFO] [stderr] Checking futures-util v0.3.5 [INFO] [stderr] Checking structopt v0.3.15 [INFO] [stderr] Checking h2 v0.2.6 [INFO] [stderr] Checking serde_urlencoded v0.6.1 [INFO] [stderr] Checking hyper v0.13.7 [INFO] [stderr] Checking hyper-tls v0.4.3 [INFO] [stderr] Checking reqwest v0.10.6 [INFO] [stderr] Checking reddit-app-auth v0.1.0 (/tmp/fixit) [INFO] [stderr] Migrating src/main.rs from 2018 edition to 2021 [INFO] [stderr] warning: failed to automatically apply fixes suggested by rustc to crate `reddit_app_auth` [INFO] [stderr] [INFO] [stderr] after fixes were automatically applied the compiler reported errors within these files: [INFO] [stderr] [INFO] [stderr] * /rustc/a7a572ce3edd6d476191fbfe92c9c1986e009b34/library/std/src/macros.rs [INFO] [stderr] * src/main.rs [INFO] [stderr] [INFO] [stderr] This likely indicates a bug in either rustc or cargo itself, [INFO] [stderr] and we would appreciate a bug report! You're likely to see [INFO] [stderr] a number of compiler warnings after this message which cargo [INFO] [stderr] attempted to fix but failed. If you could open an issue at [INFO] [stderr] https://github.com/rust-lang/rust/issues [INFO] [stderr] quoting the full output of this command we'd be very appreciative! [INFO] [stderr] Note that you may be able to make some more progress in the near-term [INFO] [stderr] fixing code with the `--broken-code` flag [INFO] [stderr] [INFO] [stderr] The following errors were reported: [INFO] [stderr] error[E0425]: cannot find value `args` in this scope [INFO] [stderr] --> src/main.rs:83:23 [INFO] [stderr] | [INFO] [stderr] 83 | println!("{:#?}", args); [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] help: a local variable with a similar name exists [INFO] [stderr] | [INFO] [stderr] 83 | println!("{:#?}", _args); [INFO] [stderr] | ~~~~~ [INFO] [stderr] help: consider importing this function [INFO] [stderr] | [INFO] [stderr] 1 | use std::env::args; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unreachable statement [INFO] [stderr] --> src/main.rs:83:5 [INFO] [stderr] | [INFO] [stderr] 81 | return Ok(()); [INFO] [stderr] | ------------- any code following this expression is unreachable [INFO] [stderr] 82 | [INFO] [stderr] 83 | println!("{:#?}", args); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error; 1 warning emitted [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0425`. [INFO] [stderr] Original diagnostics will follow. [INFO] [stderr] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:83:5 [INFO] [stdout] | [INFO] [stdout] 81 | return Ok(()); [INFO] [stdout] | ------------- any code following this expression is unreachable [INFO] [stdout] 82 | [INFO] [stdout] 83 | println!("{:#?}", args); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `command` [INFO] [stdout] --> src/main.rs:61:17 [INFO] [stdout] | [INFO] [stdout] 61 | fn print_scopes(command: Command) { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> src/main.rs:80:9 [INFO] [stdout] | [INFO] [stdout] 80 | let args = Cli::from_args(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `parse_scopes` [INFO] [stdout] --> src/main.rs:56:4 [INFO] [stdout] | [INFO] [stdout] 56 | fn parse_scopes(response: blocking::Response) -> HashMap { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `print_scopes` [INFO] [stdout] --> src/main.rs:61:4 [INFO] [stdout] | [INFO] [stdout] 61 | fn print_scopes(command: Command) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:66:26 [INFO] [stdout] | [INFO] [stdout] 66 | Err(e) => panic!(e) [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `--force-warn non-fmt-panics` implied by `--force-warn rust-2021-compatibility` [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 [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 66 | Err(e) => panic!("{}", e) [INFO] [stdout] | +++++ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 66 | Err(e) => std::panic::panic_any(e) [INFO] [stdout] | ~~~~~~~~~~~~~~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:83:5 [INFO] [stdout] | [INFO] [stdout] 81 | return Ok(()); [INFO] [stdout] | ------------- any code following this expression is unreachable [INFO] [stdout] 82 | [INFO] [stdout] 83 | println!("{:#?}", args); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `command` [INFO] [stdout] --> src/main.rs:61:17 [INFO] [stdout] | [INFO] [stdout] 61 | fn print_scopes(command: Command) { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> src/main.rs:80:9 [INFO] [stdout] | [INFO] [stdout] 80 | let args = Cli::from_args(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `parse_scopes` [INFO] [stdout] --> src/main.rs:56:4 [INFO] [stdout] | [INFO] [stdout] 56 | fn parse_scopes(response: blocking::Response) -> HashMap { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `print_scopes` [INFO] [stdout] --> src/main.rs:61:4 [INFO] [stdout] | [INFO] [stdout] 61 | fn print_scopes(command: Command) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:66:26 [INFO] [stdout] | [INFO] [stdout] 66 | Err(e) => panic!(e) [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `--force-warn non-fmt-panics` implied by `--force-warn rust-2021-compatibility` [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 [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 66 | Err(e) => panic!("{}", e) [INFO] [stdout] | +++++ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 66 | Err(e) => std::panic::panic_any(e) [INFO] [stdout] | ~~~~~~~~~~~~~~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 39.03s [INFO] [stderr] Running `cargo check` to verify 2021 [INFO] [stderr] Checking reddit-app-auth v0.1.0 (/tmp/fixit) [INFO] [stdout] error: format argument must be a string literal [INFO] [stdout] --> src/main.rs:66:26 [INFO] [stdout] | [INFO] [stdout] 66 | Err(e) => panic!(e) [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] help: you might be missing a string literal to format with [INFO] [stdout] | [INFO] [stdout] 66 | Err(e) => panic!("{}", e) [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: format argument must be a string literal [INFO] [stdout] --> src/main.rs:66:26 [INFO] [stdout] | [INFO] [stdout] 66 | Err(e) => panic!(e) [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] help: you might be missing a string literal to format with [INFO] [stdout] | [INFO] [stdout] 66 | Err(e) => panic!("{}", e) [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:83:5 [INFO] [stdout] | [INFO] [stdout] 81 | return Ok(()); [INFO] [stdout] | ------------- any code following this expression is unreachable [INFO] [stdout] 82 | [INFO] [stdout] 83 | println!("{:#?}", args); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `reddit-app-auth` due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:83:5 [INFO] [stdout] | [INFO] [stdout] 81 | return Ok(()); [INFO] [stdout] | ------------- any code following this expression is unreachable [INFO] [stdout] 82 | [INFO] [stdout] 83 | println!("{:#?}", args); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] [stderr] error: failed to check after updating to 2021 [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `cargo check --frozen --all --all-targets --message-format=json` (exit status: 101) [INFO] running `Command { std: "docker" "inspect" "3e85cf2f6f8082cf56f97aa8957831cbaf101ef7f7c107109390f348fa7ef2a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3e85cf2f6f8082cf56f97aa8957831cbaf101ef7f7c107109390f348fa7ef2a0", kill_on_drop: false }` [INFO] [stdout] 3e85cf2f6f8082cf56f97aa8957831cbaf101ef7f7c107109390f348fa7ef2a0