[INFO] fetching crate peekable_reader 0.0.2...
[INFO] checking peekable_reader-0.0.2 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate peekable_reader 0.0.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate peekable_reader 0.0.2 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate peekable_reader 0.0.2
[INFO] finished tweaking crates.io crate peekable_reader 0.0.2
[INFO] tweaked toml for crates.io crate peekable_reader 0.0.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", 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] a9914c2d4556bb84b799b6fea8d80f21b4ad7b5b51d2aa0b5b38680810979bc9
[INFO] running `Command { std: "docker" "start" "-a" "a9914c2d4556bb84b799b6fea8d80f21b4ad7b5b51d2aa0b5b38680810979bc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9914c2d4556bb84b799b6fea8d80f21b4ad7b5b51d2aa0b5b38680810979bc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9914c2d4556bb84b799b6fea8d80f21b4ad7b5b51d2aa0b5b38680810979bc9", kill_on_drop: false }`
[INFO] [stdout] a9914c2d4556bb84b799b6fea8d80f21b4ad7b5b51d2aa0b5b38680810979bc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--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] 73b02c639788b8790784bb5605edf9309b6ddf5eadcbc2d0efaa1793246f48ec
[INFO] running `Command { std: "docker" "start" "-a" "73b02c639788b8790784bb5605edf9309b6ddf5eadcbc2d0efaa1793246f48ec", kill_on_drop: false }`
[INFO] [stderr]     Checking peekable_reader v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]  --> src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::old_io::IoResult;
[INFO] [stdout]   |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Reader` in this scope
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<R: Reader> PeekableReader<R> {
[INFO] [stdout]    |         ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Reader` in this scope
[INFO] [stdout]   --> src/lib.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<R: Reader> Reader for PeekableReader<R> {
[INFO] [stdout]    |                 ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Reader` in this scope
[INFO] [stdout]   --> src/lib.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<R: Reader> Reader for PeekableReader<R> {
[INFO] [stdout]    |         ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:79:16
[INFO] [stdout]    |
[INFO] [stdout] 79 |             Ok(try!(self.inner.read(&mut buf[offset..])) + offset)
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]  --> src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::old_io::IoResult;
[INFO] [stdout]   |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]   --> src/lib.rs:87:14
[INFO] [stdout]    |
[INFO] [stdout] 87 |     use std::old_io::{MemReader, IoError, IoErrorKind, IoResult};
[INFO] [stdout]    |              ^^^^^^ could not find `old_io` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `peekable_reader`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0405]: cannot find trait `Reader` in this scope
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<R: Reader> PeekableReader<R> {
[INFO] [stdout]    |         ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Reader` in this scope
[INFO] [stdout]   --> src/lib.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<R: Reader> Reader for PeekableReader<R> {
[INFO] [stdout]    |                 ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Reader` in this scope
[INFO] [stdout]   --> src/lib.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<R: Reader> Reader for PeekableReader<R> {
[INFO] [stdout]    |         ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Reader` in this scope
[INFO] [stdout]    --> src/lib.rs:112:10
[INFO] [stdout]     |
[INFO] [stdout] 112 |     impl Reader for MockReaderWithError {
[INFO] [stdout]     |          ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:79:16
[INFO] [stdout]    |
[INFO] [stdout] 79 |             Ok(try!(self.inner.read(&mut buf[offset..])) + offset)
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "73b02c639788b8790784bb5605edf9309b6ddf5eadcbc2d0efaa1793246f48ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73b02c639788b8790784bb5605edf9309b6ddf5eadcbc2d0efaa1793246f48ec", kill_on_drop: false }`
[INFO] [stdout] 73b02c639788b8790784bb5605edf9309b6ddf5eadcbc2d0efaa1793246f48ec